Hansen HA4A series Operating instructions

ADDITIONAL FEATURES
Tolerant of Dry Systems
For Ammonia, R22, R134a and other Hansen-
Approved Refrigerants
Wide Range of Options
Inlet, Outlet, or Differential Pressure
Wide Pressure Ranges
Electric Shut-Off, Dual, or Wide-Opening Available
Safe Working Pressure: 400 psig (28 bar g)
CSA Certified, CRN for Canada
Weld-In-Line Available; Contact Factory
INTRODUCTION
These advanced-design, strong-bodied, precision-
manufactured MODULAR regulators are superior in their
ability to overcome dirt and sticky oil during opening
and tight closing. Models are available for nearly every
control function requirement of industrial ammonia and
commercial halocarbon refrigeration. These regulators
are ideal for cold storage plants, poultry plants, meat
packing, fish processing, freezers, ice plants, breweries,
bottling plants, heat recovery units, petrochemical
plants, pharmaceutical plants, supermarkets, and many
others.
APPLICATIONS
Evaporator Pressure Control
Defrost Pressure Control
Condensing Pressure Regulation
Receiver Pressure Control
Hot Gas Bypass Capacity Regulation
Suction Pressure Control
Air or Liquid Temperature Regulation
Internal System Pressure Relief
V-PORT
MODULATION
IRON BODY
DUCTILE
DIRT WIPING
DISC-PISTON
MANUAL OPENING
STEM
RELIABLE
TEFLON SEAT
MODULAR PILOTS
HERE
SPRING
STAINLESS STEEL
DUCTILE
STRONG
GAUGE PORT
1/4'' NPT
KEY FEATURES
Contents Page
Regulator Variations 3
Capacities 4–5
Control Modules (Pilots) 6
Main Regulators Only (AR1, AR3) 7
Operation and Adjustment 8–11
Installation Dimensions 12–13
Parts List 14–18
Service and Maintenance, Abbreviations 19
Ordering Information, Conversions 20
Specifications, Applications,
Service Instructions & Parts
HA4A MODULAR
PRESSURE REGULATORS
¾" THROUGH 6" PORT
(20MM THROUGH 150MM)
Bulletin R429d
AUG 2015
Various Connection
Styles and Sizes
for Refrigerants
HA4AB Regulator with Electric Wide Opening

INSTALLATION
Regulators should be protected from dirt and moisture
during storage. The arrow on the body should be in
the normal direction of refrigerant flow. These valves
will not prevent reverse flow; use check valves where
necessary. Regulators are normally in horizontal pipe
lines with pilots and manual-opening stems on top. Do
not rotate the position of the valve adapter or the valve
will not operate.
The system should be free of dirt, weld slag, and rust
particles. Regulators can be equipped with separate,
close-coupled inlet strainers. No small, hidden,
internal screens are used. Gauges and gauge valves
should be installed on the inlet and outlet to help in
system diagnosis. Because of the many regulator pilot
combinations, during installation of a large job, the
regulator nameplates should be checked against piping
drawings to guarantee proper function for each location.
Where pilot solenoid control modules are used, the
nameplate coil voltage should be checked before wiring.
Pipe sizing, anchoring, valve rating, system design,
and other precautionary factors should be taken into
consideration to ensure “liquid hammer” will not occur
when the valve opens or closes.
The 5" and 6" valves are type HA4W with integral butt
weld end only. These steel-bodied regulators are directly
welded into the pipe line. During welding, the manual-
opening stem should be opened downward several turns
to protect the Teflon seat from weld heat.
Welds should be annealed as necessary in accordance
with good practice. Painting of valves and welds is
recommended for corrosion protection. Pipe covering,
where applied, should have proper moisture barrier.
Before putting valves into ser vice, all pipe connections,
valve seats, cover seals, and stem seals should be tested
for leaks at pressure levels called for in appropriate
codes.
ELECTRICAL
When the electric shut-off, wide-opening, or dual feature
is supplied, a Hansen low-wattage, molded electrical coil
is included. Standard coil voltages are 115V, 208/230V,
or 24V at 50/60Hz. Other voltages available. The coil
properly operates between 85% and 110% of the rated
voltage. Coils should only be energized while on the pilot
solenoid tube. Unless otherwise specified, the standard
coil with a ½" fitting for conduit is supplied with valves.
A watertight solenoid coil with 18" (450 mm) long
wire pigtail leads and a steel frame housing with a ½"
conduit fitting is standard.
Optional DIN Plug Coils are for grounded cord
connections and include the necessary DIN plug socket
with gasket.
Hansen long life Beacon Pilot Lights are available. They
incorporate a totally encapsulated, unique secondary
wound coil and LED light in a compact disc. These pilot
lights require no additional wiring.
Note: Beacon Pilot Lights are for AC voltage coils only.
MATERIAL SPECIFICATIONS
Body:
¾" through 4": Ductile iron, ASTM A536
5" & 6": Cast steel, ASTM A352 LCB
Adapter: Ductile iron, ASTM A536
Piston: Steel, disc type, Teflon piston seal
V-Port/Seat: ductile iron, with Teflon seat
Main Seat: ¾" through 1¼": integral ductile iron
1½" through 6": stainless steel, removable
Gaskets: Nonasbestos, graphite composite
Manual Opening Stem: Steel, plated
Pilots: Stainless steel trim
Pilot Orifice: Stainless steel
Flanges: Forged steel, ASTM A105
Safe Working Pressure: 400 psig (28 bar g), 600 PSIG
(41 bar g) available contact factory
Operating Temperature: –60°F to +240°F (–50°C to
+115°C)
ADVANTAGES
These valves combine modern design and new age
materials with advanced manufacturing techniques
and intense quality control to offer a significantly
superior and reliable product. Their ductile iron bodies
are stronger and more rugged than common cast iron,
or so called semi-steel (class B iron), valves. They are
more dirt resistant than full skirted-piston-design valves.
All regulators use energized Teflon dirt-wiping piston
seals which operate reliably, even under dry, oil-free
conditions. The screw-on control modules (pilots) are
easy to change and can be used on all valve sizes. All
valves incorporate Teflon seating and stainless steel
spring closing. Manual-opening stems are located on
top of valves, up and away from dirt and rust particles
to avoid thread jamming. Nonasbestos gaskets are
standard. These standard regulator valves use the same
flanges and spacing as R/S model A4A, except 1¼"
(32mm). Special Hansen 1¼" 4-bolt regulators are
available from stock to exactly replace R/S 1¼" A4A only.
SIZING
Proper regulator valve sizing is important for smooth
operation and long, trouble-free life of the valve.
Therefore, capacity of the regulator at both the maximum
and minimum flow and pressure drop should be
analyzed. Pressure regulators will operate satisfactorily
to approximately 15% of the maximum capacity of valve
based on the corresponding pressure drop. In extreme
cases, downsizing or two smaller regulators in parallel
are necessary. For pressure drops exceeding 45 psi
(3.1 bar g), special construction may be required. Contact
the factory.
2
R429d
AUG 2015

REGULATOR VARIATIONS
NOTE: Many other control functions can be achieved by
combining the control modules in different arrangements.
For example: a dual regulator with electric shut-off on
each pressure pilot; i.e. HA4ADS.
HA4AP
HA4AT
HA4AJ
HA4AO
HA4A
HA4AS
HA4AB
HA4AD
HA4AL
HA4AK
HA4AM
HA4A STANDARD REGULATOR
This most common pressure regulator
modulates to control evaporator pressure,
condensing pressure, pressure in a
vessel, or pressure in a portion of
a system. It is frequently called an
evaporator pressure regulator (EPR) or
back pressure regulator. Opens on rising
inlet pressure. See page 8. Shown with
M3W pilot.
HA4AS REGULATOR WITH
ELECTRIC SHUT-OFF
This control is commonly used for
temperature control or defrost. Regulates
at the set-for pressure when energized.
When de-energized, the valve closes
tight regardless of the pressure setting.
See page 9.
HA4AB REGULATOR WITH
ELECTRIC WIDE OPENING
Commonly regulates for defrost or
temperature, but opens wide for maximum
cooling. Regulating at the set-for pressure
when de-energized; regulator opens when
energized. See page 9.
HA4AD DUAL PRESSURE
REGULATOR
Regulates (evaporator) pressure at a
setting when energized, and at a higher
setting for defrost, temperature control,
or pressure relief when de-energized.
See page 9.
HA4AL DIFFERENTIAL
PRESSURE REGULATOR
Commonly used as liquid pump relief,
condenser-receiver pressure difference
control, discharge pressure boosting
for defrosting or heat recovery, and
other similar applications. This control
modulates to maintain the set-for
difference between inlet and outlet
pressure. See page 8.
HA4AK RESEATING
RELIEF REGULATOR
Used for defrost, high-to-low side relief,
or nonatmosphere relief to other parts
of the system. This control opens when
system upstream pressure is above the
tagged and sealed set point pressure,
and repeatedly reseats after operation.
See page 8.
HA4AO OUTLET
PRESSURE REGULATOR
Controls outlet pressure by opening
as downstream pressure falls below
the set point. Used for hot gas to
provide artificial refrigeration loading, for
condenser and receiver pressure control
by means of gas bypass, limiting hot gas
pressure supply in defrosting evaporator in
conjunction with liquid drain traps, or for
compressor suction pressure limitation.
Can be combined with electric shut-off,
temperature-operated, dual, or wide-
opening features. See page 9.
HA4AP PNEUMATICALLY
COMPENSATED REGULATOR
Commonly used for precise air or liquid
temperature control via pneumatic
controller. An air, vapor, or liquid pressure
signal to the control module bonnet
increases inlet pressure from the set-for
pressure value at a 1:1 ratio. See page 10.
HA4AT TEMPERATURE
OPERATED REGULATOR
The vapor pressure capillary tubing and
bulb system modulates the regulator open
as temperature increases to control air or
liquid temperature. See page 10.
HA4AJ ELECTRONICALLY
CONTROLLED REGULATOR
Electronic pilot and controller provides
very precise temperature control of
various cooled media under fluctuating
load conditions. See page 10.
HA4AM ELECTRIC MOTOR
COMPENSATED REGULATOR
Commonly used for precise room
temperature control or liquid chiller
control. The controlling motor changes
regulator pressure setting in accordance
with a temperature controller. See page 11.
OBSOLETE
OBSOLETE
3R429d
AUG 2015

SUCTION VAPOR CAPACITIES (TONS)
(1 Ton=12,000 Btu/hr=3.517 kW=3042 kcal/hr)
‡ 2 psi= 0.14 bar g 5 psi= 0.35 bar g 10 psi= 0.69 bar g 20 psi= 1.38 bar g
*Optional 25% or 50% reduced capacity ¾" (20 mm) plugs are available for unusually low loads if requested.
† –40°F (–40°C) and –20°F (–28.9°C) capacities are based on a two stage system.
For liquid overfeed evaporator suction between normal 2:1 to 5:1 rate, add 20% to the evaporator load or use the next larger port
size to accommodate liquid volume accompanying the suction gas and to reduce impact velocity.
Conditions: Capacities are based on the evaporator temperatures shown and +86°F (+30°C) liquid. R717: For each 10°F (5.6°C)
lower liquid temperature, increase the above table capacity by 3%. R22: For each 10°F (5.6°C) lower liquid temperature, increase
the above table capacity by 5%. To convert for R134a, multiply the R22 table values by 0.73 (accuracy within 8%). For other
refrigerant capacities and suitability, contact the factory.
PORT
SIZE
(mm)
Cv
(Kv)
PRESSURE
DROP
ACROSS
VALVE‡
R717 R22
EVAPORATING TEMPERATURE EVAPORATING TEMPERATURE
–40ºF†
(–40ºC)
–20ºF†
(–28.9ºC)
0ºF
(–17.8ºC)
+20ºF
(–6.7ºC)
+40ºF
(+4.4ºC)
–40ºF†
(–40ºC)
–20ºF†
(–28.9ºC)
0ºF
(–17.8ºC)
+20ºF
(–6.7ºC)
+40ºF
(+4.4ºC)
¾"*
(20)
6.4
(5.5)
2 psi 4.7 6.4 7.4 9.5 12 2.1 2.8 2.8 3.6 4.4
5 psi 6.7 9.7 8.7 15 19 3.2 4.3 4.4 5.5 6.9
10 psi — 13 15 20 26 — 5.8 6.0 7.7 9.6
20 psi — — 19 27 35 — — 7.8 10 13
1"
(25)
11.7
(10)
2 psi 8.5 12 13 17 22 3.9 5.2 5.2 6.5 8.0
5 psi 12 18 16 27 34 5.8 7.9 8.0 10 13
10 psi — 23 28 37 47 — 11 11 14 18
20 psi — — 36 49 64 — — 14 19 24
1¼"
(32)
16.4
(14)
2 psi 12 16 19 24 31 5.4 7.2 7.2 9.1 11.3
5 psi 17 25 22 3 8 48 8.1 11 11 14 18
10 psi — 32 39 52 66 — 15 15 20 25
20 psi — — 50 69 90 — — 20 26 34
1½"
(40)
35
(30)
2 psi 25 35 40 52 65 12 15 15 19 24
5 psi 37 53 48 81 102 17 24 24 30 38
10 psi — 69 84 111 141 — 31 33 42 53
20 psi — — 106 147 193 — — 43 56 72
2"
(50)
47
(40)
2 psi 34 47 54 70 87 16 21 21 26 32
5 psi 49 71 64 108 137 23 32 32 41 51
10 psi — 92 113 149 190 — 42 44 56 71
20 psi — — 143 198 259 — — 57 76 96
2½"
(65)
77
(66)
2 psi 56 77 89 114 143 25 34 34 43 53
5 psi 81 116 105 177 224 38 52 53 67 83
10 psi — 151 185 243 311 — 69 72 92 116
20 psi — — 234 324 424 — — 94 124 158
3"
(80)
104
(89)
2 psi 76 104 120 154 193 34 46 46 58 71
5 psi 109 157 141 239 303 51 70 71 90 112
10 psi — 204 250 329 420 — 93 97 125 156
20 psi — — 316 438 572 — — 127 167 213
4"
(100)
166
(142)
2 psi 121 166 191 246 309 55 73 73 92 114
5 psi 174 251 226 382 483 82 112 114 144 179
10 psi — 325 398 525 671 — 149 155 199 249
20 psi — — 505 699 913 — — 203 267 340
5"
(125)
242
(207)
2 psi 176 242 278 358 450 80 107 107 135 166
5 psi 254 365 329 557 704 120 163 166 210 261
10 psi — 474 581 765 978 — 218 226 290 363
20 psi — — 736 1019 1331 — — 295 390 496
6"
(150)
413
(354)
2 psi 300 412 475 611 768 136 182 183 230 283
5 psi 434 624 562 950 1202 204 278 282 358 446
10 psi — 809 991 1305 1669 — 371 386 496 620
20 psi — — 1256 1739 2272 — — 504 665 847
4
R429d
AUG 2015

OIL CAPACITIES (U.S. GPM)
APPLICATION: SCREW COMPRESSOR OIL PUMP
RELIEF REGULATOR (HA4AL)
LIQUID CAPACITIES (U.S. GPM)
APPLICATION: REFRIGERANT PUMP RELIEF
REGULATOR (HA4AL)
Capacities assume no gas flashing. No capacity correction
required for temperatures between –40°F (–40°C) and +40°F
(+4.4°C).
Capacities based on oil with less than 300SSU viscosity.
† Bypass from intermediate pressure at saturation temperature to booster suction.
*These capacities are not for hot gas defrost relief. See the chart in the middle of this page.
**Optional 25% and 50% reduced capacity ¾" (20mm) plugs are available.
Discharge gas capacities are based on +15°F (+10°C) evaporator temperature.
*Or an outlet pressure regulator with electric shut-off (HA4AOS).
Evaporator tons at 10°F (5.6°C) TD (temperature differential), valve capacities are conservative. These capacities can be
modified up or down depending on type of evaporator, temperature, mass, frost thickness, defrosting time, etc. Typical
for –20°F (–28.9°C) evaporator.
HOT GAS DEFROST NOMINAL VALVE SIZING CAPACITIES
(DEFROSTING EVAPORATOR SIZE TONS)
GAS CAPACITIES (TONS)*
(1 Ton=12,000 Btu/hr=3.517 kW=3042 kcal/hr)
PORT SIZE
(mm)
R717
ΔP=30 psi
(2 bar g)
R22
ΔP=30 psi
(2 bar g)
¾" (20) 45 30
1" (25) 82 56
1¼" (32) 114 78
1½" (40) 256 168
2" (50) 324 230
2½" (65) 553 377
3" (80) 733 505
PORT SIZE
(mm)
OIL
ΔP=30 psi
(2 bar g)
¾" (20) 48
1" (25) 87
1¼" (32) 122
1½" (40) 260
2" (50) 350
2½" (65) 574
3" (80) 775
REFRIG. APPLICATION
PORT SIZE (mm)
¾" (20) 1" (25) 1¼" (32) 1½" (40) 2" (50) 2½" (65)
R717
Hot Gas Solenoid* 9 to 15 15 to 28 28 to 39 39 to 73 73 to 106 106 to 165
Defrost Relief
Regulator 17 to 24 24 to 45 45 to 60 60 to 96 96 to 140 140 to 225
R22
Hot Gas Solenoid* 6 to 8 8 to 15 15 to 20 20 to 32 32 to 47 47 to 75
Defrost Relief
Regulator 6 to 8 8 to 15 15 to 20 20 to 32 32 to 47 47 to 75
SIZE
(mm)
DISCHARGE GAS REGULATOR HOT GAS BY-PASS TO SUCTION
R717 R22 R717 R22
+86ºF (+30ºC)
CONDENSING
+140ºF (+60ºC)
DISCHARGE
+86ºF (+30ºC)
CONDENSING
+140ºF (+60ºC)
DISCHARGE
+86ºF (+30ºC)
CONDENSING
+140ºF (+60ºC)
DISCHARGE
+15º F (– 9.4ºC)
CONDENSING
+15º F (– 9.4ºC)
DISCHARGE †
+86ºF (+30ºC)
CONDENSING
+140ºF (+60ºC)
DISCHARGE
+15º F (– 9.4ºC)
CONDENSING
+15º F (– 9.4ºC)
DISCHARGE †
2 psid 5 psid 2 psid 5 psid
¾" ** (20) 17 27 6.1 9.5 88 27 32 12
1" (25) 31 49 11 17 160 49 58 22
1¼" (32) 44 69 16 24 224 68 81 31
1½" (40) 94 147 33 52 479 146 173 66
2" (50) 126 197 45 70 643 196 232 89
2½" (65) 206 323 73 115 1054 321 380 146
3" (80) 279 437 99 155 1424 434 513 197
4" (100) 445 698 158 241 Hot gas bypass capacities are based on above given temperatures. Liquid
temperature is the same as condensing temperature. Evaporator temperature
+40°F (+4.4°C) or less for +86°F (+30°C) condensing; –22°F (–30°C) evaporator
for +15°F (–9.4°C) condensing.
5" [phone] 230 361
6" (150) 1108 1735 393 616
5R429d
AUG 2015

CONTROL MODULES (PILOTS) FOR ANY REGULATOR
When installed, these control modules (pilots) enable
the main regulator to perform different control functions
(see page 3, Regulator Variations). Pilots are normally
factory installed, but can be retrofitted or interchanged
in the field. The nonrising stem can be adjusted by using
a ¼" wrench. Catalog numbers are for the
screw-on pilot module. Interchangeable
with Danfoss PM Series, size permitting.
INLET PRESSURE
Opens as inlet pressure rises. Range: A,
0 to 150 psig (0 to 10 bar g), Part 75-1097;
Range B, 30 to 300 psig (2 to 21 bar g),
Part 75-1098; Range C, 100 to 550 psig
(6 to 38 bar g), Part 75-1204; Range D, 30
to 450 psig (2 to 31 bar g), Part 75-1205,
or, Range V, 20" to 130 psig (–0.67 to
+9 bar g), Part 75-1099. CatalogM3.
Compact welded pressure pilot. Range A,
0 to 150 psig (0 to 10 bar g), Part 75-1126.
Standard only on valve sizes ¾" to 1¼".
Catalog M3W.
OUTLET PRESSURE
Opens as outlet pressure drops. For hot
gas bypass to suction or for controlled
supply pressure of defrost hot gas. Also
used for compressor suction pressure
limiting (crankcase pressure regulator).
¼" NPT connections for outlet pressure
gauge and sensing line (tubing not
included). Range B, 30 to 300 psig (2
to 21 bar g), Part 75-1101; or Range V,
20" to 130 psig (–0.67 to +9 bar g), Part
75-1100. Catalog M3O.
DIFFERENTIAL PRESSURE
Maintains set-for differential between
inlet and outlet or other pressure source.
For pump relief or any differential control.
¼" NPT connection for pressure sensing
line (tubing not included). Range A, 0
to 150 psi (0 to 10 bar) difference, Part
75-1081, Catalog M3L.
PNEUMATICALLY COMPENSATED
Air or other pressure in the bonnet raises
inlet pressure on a 1:1 ratio. ¼" NPT
connection. Range A, 0to 150 psig (0 to
10 bar g), Part 75-1081, or Range V, 20 to
130 psig (-0.67 to 9 bar g), Part 75-1249.
Catalog M3P.
RESEATING RELIEF
Opens wide when pressure exceeds
pressure setting and repeatedly reseats
after operation. Defrost relief or high-to-
low system relief. Set and tagged. The
standard setting for ammonia defrost is
70 psig (4.8 bar g). Range A, 0 to 150 psig
(0 to 10 bar g), Part 75-1103; Range B, 30
to 300 psig (+2 to 21 bar g), Part 75-1104;
Range C, 100 to 550 psig (6 to 38 bar g),
Part 75-1202; Range D, 30 to 450 psig (0
to 31 bar g), Part 75-1203. Catalog M3K.
Compact welded pressure pilot. Range A,
0 to 150 psig (0 to 10 bar g), Part 75-1127.
Standard on valve sizes ¾" to 1¼". Catalog
M3KW.
SOLENOID
Normally closed. Opens wide when
energized. Requires coil. See page 2 for
coil selection. Less coil: Part 70-1052,
Catalog MS.
ELECTRONICALLY CONTROLLED
Mounted electronic actuator changes the
pressure set point in conjunction with a
controller and temperature sensor for either
air or liquid. Very precise. See page 10 for
the control package which includes the
necessary controller and sensor. Range:
J1, 0 to 85 psig (0 to 6 bar g), Part 27B1140;
or J2, 25 to 115 psig (1.7 to 8 bar g), Part
27B1141. Catalog M3J.
TEMPERATURE OPERATED
Bulb opens the control module on
temperature rise to maintain a constant
temperature. Part 27B1110 with a range
of –40°F to +30°F (–40°C to 0°C) or Part
27B1111 with a r ange of +15°F to +75°F
(–10 to +25°C). Catalog M3T.
EXTERNAL CONNECTION
Enables a remote pressure source to be
introduced to the control via a pilot line
(replaces a pilot). ¼" NPT with separate 4"
(100 mm) long weld nipple, Part 35-1015,
Catalog M3E25.
BLANKING PLUGS
To be used in a control module port when
the port is not utilized. Stopping plugs
have square head and are marked with
“0” (75-1063). Straight through flow plugs
have a hex head and are marked with “1”
(75-1064). Catalog M3S (stopping) or M3B
(straight through).
M3
M3W
M3K
M3O
M3L
M3P M3B
M3S
M3E25
M3T
M3J
MS
OBSOLETE
OBSOLETE
6
R429d
AUG 2015

MAIN REGULATORS ONLY (AR1, AR3)
OPERATION OF REGULATORS
The regulator adapter (top cover) is available with one
control module port or three control module ports. One
control module port is often used for a solenoid valve or
a single pressure regulator. Three control module ports
are often used for a dual regulator and other multiple
function variations.
When the modular regulator has three control module
ports, two are in series (SI and SII) and one is in parallel
(P). Inlet pressure enters the internal equalization
passage and goes to both the P port and the SI port.
Inlet pressure enters the SII when the control module
SI port is open. When the control module in the SI and
SII port or the P port is open, pressure enters the space
above the piston which forces the main valve seat to
open and regulate flow.
Hansen regulators are normally furnished with control
modules (pilots) installed and tested (see page 3).
However, modular regulators less pilots and flanges
are available on order from ¾" to 6" (20mm to 150mm).
Each AR1 and AR3 includes flange gaskets, nuts and
bolts, and a plugged ¼" FPT outlet pressure access port.
The access port is for connecting outlet or differential
control module sensing lines or gauges.
AR1 is the main regulator body with ONE control module
(pilot) port, control module not included.
AR3 is the main regulator body with THREE control
module (pilot) ports, for a maximum of three control
modules, not included. The 5" and 6" (125mm and
150mm) AR3 regulators have a single control module
port with connection points for up to three total ports
via mounted pilot piping.
TO ORDER: (Main Regulators only) Specify port size
and catalog number (AR1 or AR3).
¾" through 6"
(20 mm through
150 mm)
¾" through 4"
(20 mm through
100 mm)
5" & 6"
(125 mm and 150 mm)
PARALLEL
PORT (P) SERIES
PORT (SII)
SERIES
PORT (SI)
CONTROL MODULE
(PILOT) PORT
INLET
INTERNAL
EQUALIZATION
PASSAGE DIRT WIPING
P
SI
SII
DISC-PISTON
EXTERNAL PILOT PIPING
PARALLEL
PORT (P) SERIES
PORT (SII)
SERIES
PORT (SI)
CONTROL MODULE
(PILOT) PORT
AR1 AR3
SI
P
AR3
SII
PARALLEL PILOTS
)
(SERIES AND
OPEN
SI
SII
AR3
INTERNAL
PLUG
(SERIES PILOTS)
AR3
P
SI SII
(SERIES AND
PARALLEL PILOTS)
AR1
(ONE PILOT)
7R429d
AUG 2015

HA4AK RESEATING RELIEF REGULATOR
OPERATION
(Same as HA4A) Inlet pressure is channeled through
the internal equalization passage to the reseating relief
control module. When inlet pressure exceeds the relief
setting, the control module opens wide to allow pressure
to enter the space on top of the piston. This causes the
main valve seat to open and relieve the inlet pressure,
provided the outlet pressure is at least 2 psi (0.14 bar g)
lower. A 5 psid (.35 bar g) closing spring is standard on
¾" through 1¼" valves. See page 6 for M3K pilot details.
When used for defrost relief from low side to an
intermediate pressure, a check valve on the outlet is
required to prevent back flow during refrigeration.
ADJUSTMENT
The control module is nonadjustable, factory-set and
sealed. Available in Range A, 0 to 150 psig (0 to 10 bar
g); Range B, 30 to 300 psig (2 to 21 bar g); Range C, 100
to 550 psig (6 to 38 bar g), Range D, 30-450 psig (2 to
31 bar g).
HA4A STANDARD REGULATOR
CONTROL MODULE STEM
MANUAL-OPENING STEM
DISC-PISTON
CLOSING SPRING
MAIN VALVE SEAT
CONTROL MODULE
RANGE SPRING
INTERNAL
EQUALIZATION
PASSAGE
GAUGE
INLET
PORT
M3W (OR M3) PILOT
AR1 BODY
HA4AL DIFFERENTIAL PRESSURE
REGULATOR
OPERATION
Inlet pressure is channeled
through the internal
equalization passage to
the differential pressure
control module. Outlet
pressure (or other) is
introduced to the space
on top of the differential
pressure control module
diaphragm via an external
sensing tube. A range
spring on the top of the
control module diaphragm
allows the control of the
differential between inlet
and outlet pressure. Increased range spring force
increases the differential setting. Inlet pressure,
counteracted by the range spring plus outlet pressure,
enters the space on top of the piston which forces the
main valve seat to open and regulate flow. The external
sensing tube on the 5" & 6" valves must be customer
supplied and field installed.
ADJUSTMENT
Connect a pressure gauge via a gauge valve at the
gauge port on the regulator adapter for the inlet
pressure reading. A pressure gauge downstream is
also required. With the control module range spring
force at the minimum (control module stem turned fully
counterclockwise, at this point pressure differential
is at minimum), slowly turn the control module stem
clockwise until the desired pressure difference between
the two gauges is achieved. A final adjustment should
be made after system has operated for a period of time.
The system must be capable of generating the desired
pressure difference for the regulator to open. Range A,
0 to 150 psig (0 to 10 bar g).
M3L PILOT
AR1 BODY
OPERATION
Inlet pressure is channeled through the internal
equalization passage to the inlet pressure control module.
The valve modulates open when inlet pressure exceeds
the pressure setting on the control module. The gas or
liquid passes through the inlet pressure control module
to enter the space on top of the piston, which forces
the main valve seat to open and regulate flow. As inlet
pressure increases, the main valve seat opens further to
maintain the selected inlet pressure. A minimum pressure
difference of 2 psi (0.14 bar g) is adequate to fully open
the main valve. When inlet pressure decreases below
the pressure setting on the control module, the closing
spring will cause the main valve seat to throttle closed.
ADJUSTMENT
Connect a pressure gauge via a gauge valve at the gauge
port on the regulator adapter. Set the control module
range spring at minimum force (control module stem
turned counterclockwise). Operate the refrigeration
compressor system and achieve approximate desired
suction pressure. Turn the control module stem
clockwise until a slight increase in inlet pressure is
detected by the gauge. The inlet pressure setting can
now be increased by turning the control module stem
clockwise or decreased by turning it counterclockwise.
The system should be allowed to operate for a period
of time before the final adjustment is made. The inlet
pressure control module is available in Range A, 0 to
150 psig (0 to 10 bar g); Range B, 30 to 300 psig (2
to 21 bar g); Range C, 100 to 550 psig (6 to 38 bar g),
or Range D, 30 to 450 psig (2 to 31 bar g). A vacuum
Range V, 20" to 130 psig (–0.67 to +9 bar g) is also
available.
8
R429d
AUG 2015

HA4AO OUTLET PRESSURE
REGULATOR
OPERATION
Outlet pressure is channeled
through an external sensing
tube to the outlet pressure
control module. The outlet
pressure is introduced to
the space under the control
module diaphragm. When
outlet pressure decreases
below the outlet pressure
setting the range spring
forces the control module to
open further. As the control
module opens, more inlet
pressure enters the space
on top of the piston forcing the main valve seat to open
further and regulate flow. As outlet pressure rises the
control module reduces the inlet pressure to the piston
and the main valve seat starts closing. The external
sensing tube on the 5" & 6" valves must be customer
supplied and field installed. A 5 psid (.35 bar g) closing
spring is standard on ¾" through 1¼" valves. A lighter
spring is available for applications where a low pressure
drop is required, such as holdback or crankcase pressure
regulators.
ADJUSTMENT
Connect a pressure gauge via a gauge valve to the
outlet gauge port located on the outlet pressure control
module or the pipe after the regulator. With the control
module range spring at minimum force (control module
stem turned counterclockwise) operate the refrigeration
compressor. Turn the control module stem clockwise
until the desired outlet pressure is achieved. Available
in Range: B, 30 to 300 psig (2 to 21 bar g); or vacuum
range V, 20" to 130 psig (–0.67 to +9 bar g).
HA4AB REGULATOR WITH ELECTRIC
WIDE OPENING
OPERATION
When the solenoid
control module is de-
energized, this control
operates in the same
manner as the HA4A
Standard Regulator or
other pilot functions.
When energized, inlet
pressure bypasses
the constant pressure
control module and
enters the space on
top of the piston which
forces the main valve seat to open wide to permit flow
in the direction of arrow.
ADJUSTMENT
With solenoid control module de-energized, follow
adjustment procedures for the HA4A Standard Regulator.
See page 8.
HA4AS REGULATOR WITH
ELECTRIC SHUT-OFF
OPERATION
When the solenoid
control module is
energized, this control
operates in the same
manner as the HA4A
Standard Regulator or
other pilot functions.
When de-energized,
valve closes tight to
stop flow in direction
of arrow regardless of
pressure setting on the
control module.
ADJUSTMENT
Energize the solenoid control module and follow the
control module adjustment procedures for the HA4A
Standard Regulator. See page 8.
HA4AD DUAL PRESSURE
REGULATOR
OPERATION
When the solenoid
control module is
energized, this valve
operates in the same
manner as the HA4A
Standard Regulator or
other pilot functions.
When the solenoid
control module is de-
energized, the inlet
pressure is channeled
to the higher-setting
inlet pressure control
module and operates
in the same manner as the HA4A regulator. When inlet
pressure rises above the higher setting, the control
module opens to allow inlet pressure to enter the space
on top of the piston which forces the main valve seat to
open and regulate flow. Typically used as a combined
evaporator pressure regulator and defrost internal
relief valve.
ADJUSTMENT
Connect a pressure gauge via a gauge valve at the gauge
port on the regulator adapter. With the solenoid control
module de-energized, adjust the constant pressure
control module in the P port for the high-pressure
setting. This may require a warm room or hot gas supply
to the evaporator. Then, energize the solenoid control
module located on the series SI port and adjust the
constant pressure module in the series SII port for the
low-pressure setting. For control module adjustment,
follow the adjustment procedures for the HA4A Standard
Regulator. See page 8.
HI LOW
()
MS PILOT
AR3 BODY
M3B PLUG
AR3 BOD
Y
M3W PILOT
(OR OTHER)
MS PILOT
M3O PILOT
AR1 BODY
MS PILOTM3S PLUG
M3W PILOT
(OR OTHER)
AR3 BODY
9R429d
AUG 2015

HA4AP PNEUMATICALLY
COMPENSATED REGULATOR
OPERATION
A pneumatic controller regulates the amount of air
pressure applied to the top of the M3P control module
diaphragm. A rise in temperature sensed by the
pneumatic controller reduces the air pressure to the
control module, allowing inlet pressure to enter the
space on top of the piston which forces the main valve
seat to open and regulate flow. A decrease in sensed
temperature increases the pressure of air to the M3P
control module. This increase in air pressure reduces
the opening at the M3P control module and restricts
the flow of inlet pressure to the piston, thus reducing
the opening at the valve main seat. See page 6 for M3P
pilot details.
ADJUSTMENT
Disconnect the air line to the M3P control module
and follow the adjustment procedures for the HA4A
Standard Regulator. See page 9. This sets the low
inlet pressure setting for the regulator. Connect the
air line back to the M3P control module. For every
1 psi (0.069 bar g) of increase in air pressure, the inlet
refrigerant pressure setting increases 1 psi (0.069 bar g).
Adjust the controller as specified by the manufacturer.
In lieu of air, low-pressure refrigerant or other fluid can
be used for compensation. The differential between inlet
pressure and pressure to the M3P control module must
not exceed 45 psi (3.1 bar g). Range A, 0 to 150 psig (0
to 10 bar g) or Range V, 20 to 130 psig (-0.67 to 9 bar g).
HA4AT TEMPERATURE
OPERATED REGULATOR
OPERATION
Temperature changes are detected by the thermal bulb.
The expansion or contraction of the charge inside the bulb
and capillary tube is transferred across the diaphragm
in the M3T control module. A rise in temperature above
the set-for temperature opens the M3T control module
and allows inlet pressure to enter the space on top of
the piston which forces the main valve seat to open
and regulate flow. A decrease in temperature closes
the M3T control module which allows the piston to rise
and close the main valve seat. A reverse acting model is
also available: rising temperature closes the regulator,
as for reheat. See page 6 for M3T pilot details.
ADJUSTMENT
Connect a pressure gauge via a gauge valve at the gauge
port on the regulator adapter. Place a thermometer in the
cooled medium. With the system operating, set the M3T
regulator control module to the desired temperature by
turning the adjustment ring clockwise to lower opening
temperature or counterclockwise to increase opening
temperature. One turn is equivalent to a change of
approximately 11°F (6.1°C). Tighten the locking ring after
the final adjustment has been made. Range –40°F to +30°F
(–40°C to 0°C); or +15°F to +75°F (–10°C to +25°C).
HA4AJ ELECTRONICALLY
CONTROLLED REGULATOR
OPERATION
The controller receives signals from an air or liquid
sensor and transmits an electrical voltage to the M3J
electronic actuator control module. An increase in
temperature lowers the voltage to actuator, opening
the regulator to increase flow. A decrease in sensor
temperature increases the voltage from the controller
to the M3J electronic actuator control module closing
the valve to reduce flow. This precision control can
maintain temperatures within 1°F (0.5°C) of setting.
The M3J electronic actuator control module must be
operated by one of the control packages below. See
page 6 for M3J pilot details.
CONTROL PACKAGES
ECP This standard electronic control package
consists of a controller, controller base, sensor,
and transformer.
DDS This control package includes the standard
ECP components plus a digital temperature
readout, set-for/actual temperature switch
to easily check temperature, assembled and
mounted on a metal back plate. To display
the set-for temperature, simply depress and
hold the set-for/actual temperature switch.
When released, the digital readout will again
display the actual temperature at the sensor.
DDL Same as the DDS with a minimum evaporator
pressure adjustment. This adjustment sets an
evaporator pressure “floor” independent of
temperature. This is ideal to prevent too cold of
an evaporator surface in flooded evaporators
or during loading of critical, temperature-
sensitive products.
WTE2 Watertight controller enclosure for the above
“DD” series control packages. This industrial-
grade enclosure is polycarbonate with clear
gasketed cover.
EKA46 This computer interface is available for direct
connection of the electronic actuator control
module to a plant computer, PLC, or other
controlling device. Input to interface is a
regulated 4–20 mA or 0 to 10 volt signal from an
intelligent control device. The EKA46 package
includes interface module and transformer.
ADJUSTMENT
Set the desired temperature (REF) using both coarse and
fine adjustments. Set the alarm limits (LIM) on deviation
from the desired temperature, +1°C to +5°C. Adjust the
alarm delay timer (DEL) to delay alarm release from 10
to 60 minutes. Both Proportional amplification (Kp) and
Integration time (Tn) are factory set to 4. Consult the
instruction manual or contact the factory if adjustment is
necessary. See the instructions supplied with the EKA46 for
its adjustment recommendations. M3J electronic actuator
control module ranges: J1, 0 to 85 psig (0 to 6 bar g); or
J2, 25 to 115 psig (1.7 to 8 bar g).
OBSOLETE
OBSOLETE
OBSOLETE
10
R429d
AUG 2015

HA4AM ELECTRIC MOTOR
COMPENSATED REGULATOR
OPERATION
The regulator pressure setting is altered as the motor
receives a signal from a suitable temperature controller.
The motor responds to maintain the balance in the
electrical circuit. The rotation of the motor is transmitted
through a cam, valve stem, and range spring to the
top of the control module diaphragm. An increase in
temperature decreases the range spring force on top of
the control module diaphragm. This decrease in force on
the diaphragm allows inlet pressure to pass through the
control module to enter the space on top of the piston
which forces the main valve seat open to reduce the
evaporator pressure. A decrease in temperature causes
an increase in the range spring force. This restricts the
flow of inlet pressure to the piston causing a reduction in
the opening of the main valve seat, reducing regulator
flow by raising the pressure setting.
APPLICATIONS
This motor compensated regulator is popular for fruit
storage, precision air temperature control, and liquid
chiller control.
ADJUSTMENT
Adjust the temperature controller as specified by the
manufacturer. Fully open the regulator manually by
turning in (clockwise) the manual-opening stem to cool
the product or room. Once the temperature at the sensing
device is approximately as desired, adjust the controller
output so that the cam is rotated to the center position.
Put regulator back in automatic operation by turning the
manual-opening stem out (counterclockwise). Loosen
the adjustment locking nut. See the diagram to the right.
Turn the adjustment stem clockwise to raise the inlet
pressure setting or counterclockwise to lower the inlet
pressure setting. When the desired refrigerant pressure
setting is achieved, tighten the adjustment locking nut.
A final adjustment should be made after the system has
operated for a period of time.
Using a potentiometer slide wire type of controller
(typically 135 ohm), depending on product heat load, a
deviation from desired temperature of about +2°F to +5°F
(+1.1°C to +2.8°C) is normal to rotate the regulator cam
for maximum load satisfaction. As the load is reduced
or as the temperature becomes lower, the cam rotates
to create a higher evaporator pressure just adequate to
balance the load and maintain the desired temperature,
usually with ±1°F (0.5°C). Other controllers are available
to operate the motor/cam rotation.
CAM
ADJUSTMENT
STEM
ADJUSTMENT
LOCKING NUT
MOTOR
MOTOR
CONTROL MODULE
BONDED
JOINT
DO NOT TURN
BRACKET
The basic Electric Motor Compensated Regulator
consists of a nonremovable control module with a motor
bracket and cam. The control module is available in either
Range A, 0 to 150 psig (0 to +10 bar g); Range V, 20" to
130 psig (–0.67 to +9 bar g); or Range B, 30 to 300 psig
(2 to 21 bar g). The motor bracket comes mounted on
the control module and is suitable for use with any of
the HONEYWELL motors. Two cams are available: Low
Rise (standard) and High Rise. The table below indicates
the pressure change possible for each cam.
The HONEYWELL motor has 160° of rotation travel.
Motors are available for either 135 ohm control signal
input (24VAC Power input) or 4-20 mA control signal input
(120V Power input). Electric proportional thermostat
controllers (135 ohm output), electronic PID controllers
(4–20mA output) with sensor, and 24V transformers are
available accessories.
RANGE CAM
PRESSURE CHANGE
A,B, or V
LOW
RISE
HIGH
RISE
HONEYWELL
30 psig (2.1 bar g)
60 psig (4.1 bar g)
11 R429d
AUG 2015

INSTALLATION DIMENSIONS (mm)
1½" THROUGH 4" REGULATORS¾" THROUGH 1¼" REGULATORS
M = Additional length for close-coupled strainer
*Maximum width of valve.
For ¾", 1", 1¼" valves add 3" (80 mm) to one side of the valve for external piping as found on HA4AO and HA4AL.
An alternate 4-bolt version of the 1¼" valve is available with face-to-face dimension (L1) same as R/S 1¼" for replacements.
H
2
3
1
22
3
L
L
L
P
H4
P
1
4
L
LM
3 PORT
ADAPTER
H
L
H
3 PORT
ADAPTER
H
L
4
M
P
L
L
LL
H
H
3
4
22
L
1
1
2
P
3
H
The above dimensions do not include seal cap and solenoid coil removal height, or motor-access clearance.
M3E25 = Less 4" (100mm) long weld nipple. M3M = Electric motor compensated control module with motor.
“P” DIMENSION FOR CONTROL MODULES (mm)
PORT SIZE
(mm) H1H2H3H4
L
L1L2L3L4MW*
FPT,SW WN,ODS
¾", 1", 1¼"
(20, 25, 32)
3.09"
(78)
6.77"
(172)
3.75"
(95)
4.63"
(117)
8.20"
(208)
8.94"
(227)
6.19"
(157)
2.38"
(60)
4.07"
(103)
7.20"
(183)
3.70"
(94)
4.50"
(114)
1½", 2"
(40, 50)
2.87"
(73)
8.84"
(225)
4.90"
(124)
5.72"
(145)
12.39"
(315)
13.39"
(340)
9.88"
(251)
2.35"
(60)
4.04"
(103)
10.89"
(277)
9.83"
(250)
4.50"
(114)
2½"
(65)
3.62"
(92)
9.69"
(246)
5.57"
(141)
6.53"
(166)
13.01"
(330)
14.03"
(356)
9.88"
(251)
2.35"
(60)
4.04"
(103)
11.01"
(280)`
9.83"
(250)
5.62"
(143)
3"
(80)
4.06"
(103)
10.00"
(254)
6.03"
(153)
6.88"
(175)
15.38"
(391)
16.40"
(417)
12.25"
(311)
2.35"
(60)
4.04"
(103)
13.38"
(340)
12.20"
(310)
6.50"
(165)
4"
(100)
4.69"
(119)
10.56"
(268)
6.58"
(167)
7.4 6 "
(189)
17.01"
(432)
20.51"
(521)
14.12"
(359)
2.69"
(68)
4.38"
(111)
15.01"
(381)
14.07"
(357)
8.06"
(205)
CATALOG M3 M3W MS M3O M3K M3KW M3L M3P M3E25 M3M
SIZE
(mm)
6.5"
(165)
5.12"
(130)
3.25"
(83)
7.75"
(197)
6.5"
(165)
5.12"
(130)
6.5"
(165)
6.5"
(165)
1"
(25)
14.9"
(378)
M3
E2
5
M3
M
1"
(
25
)
14.9"
(
378
)
C
ATAL
OG
M
3
M
3
W
MS
M
3
O
M
3
K
M
3
KW
M
3
L
M
3
P
S
IZ
E
(mm)
6
.5
"
(165)
5.1
2"
(130)
3
.
2
5
"
(83)
7
.75
"
(
197
)
6
.5
"
(
165)
5
.1
2"
(
130
)
6
.5
"
(
165)
6
.5
"
(165)
12
R429d
AUG 2015

HANSEN
P
12.75''
20.00''
20.40''
16.58''
6.40''
(324)
(508)
(163)
(421)
(518)
INSTALLATION DIMENSIONS (mm)
5" AND 6" REGULATORS
FOR SERIES AND PARALLEL ARRANGEMENT (AD)
SI, solenoid; SII & P pressure pilots
FOR SERIES ARRANGEMENT (AS)
SI, solenoid; SII pressure pilot
5" AND 6" PILOT PIPING (TOP VIEW)
WELD END DIMENSIONS (mm)
T
A DIA
(See page 8.)
SII
SI
PLUG
INTERNAL
SI SII
P
PORT SIZE A T
5"
(125)
5.05"
(128)
0.26"
(6.6)
6"
(150)
6.06"
(154)
0.28"
(7.1)
13 R429d
AUG 2015

PARTS LIST CONTROL MODULES
M3, M3K, M3L, M3P
8
7
4
9
3
1
2
& O-RING (75-1071)
PORT GASKET
5
6
2
1/4'' NPT
GAUGE PORT
(OUTLET
PRESSURE)
SEAL CAP
(75-0798)
11
10
1
2
3
4
5
7
8
PORT GASKET
M3L, M3P
ONLY
& O-RING (75-1071)
6
SEAL CAP
(75-0798)
M3O
MS
ITEM DESCRIPTION QTY PART NO
Diaphragm/Gasket Kit 75-1107
(M3, M3K, M3L, M3P)
Above kit consists of:
1 Diaphram 1 75-0716
2 Lower Gasket (thick) 1 75-0426
3 Upper Gasket (thin) 1 75-0636
4 Follower O-ring 1 75-0337
5 Fiber Washer 1 75-0617
6 Lower Stem O-ring (green dot) 1 75-0520
7 Upper Stem O-ring 1 75-0521
8 Seal Cap O-ring 1 70-0011
Diaphragm/Gasket Kit (M3O) 75-1108
Above kit consists of:
 'LDSKUDP  
 /RZHU*DVNHWWKLFN  
 8SSHU*DVNHWWKLQ  
 )ROORZHU2ULQJ  
 )LEHU:DVKHU  
 /RZHU6WHP2ULQJJUHHQGRW  
 8SSHU6WHP2ULQJ  
 6HDO&DS2ULQJ  
 &DUWULGJH2ULQJ  
 25LQJODUJHRXWOHWSUHVVXUHSLORW  
 25LQJVPDOORXWOHWSUHVVXUHSLORW 
ITEM DESCRIPTION QTY PART NO
Solenoid Tube/Plunger Kit (MS) 70-1059
Above kit consists of:
 &RLO25LQJ  
 &RLO.QRE  
3O
XQJHU  
 6ROHQRLG7XEH  
 6ROHQRLG7XEH25LQJ  
 7XEH6FUHZV  
ITEM DESCRIPTION QTY PART NO
* M3W and M3KW control modules are hermetically sealed,
welded assemblies having no replaceable internal parts. See
page 6 for replacement part numbers. Standard on ¾"–1¼"
(20–32 mm) valves.
2
3
6
PORT GASKET
4
5
& O-RING (75-1071)
1
14
R429d
AUG 2015

PARTS LIST ¾" THROUGH 1¼" (20mm THROUGH 32mm)
17
5
19
18
14
7
8
910 11 12 13
16
15
4
1
20
21
3
6
2
AR1
P SII
SI
AR3
ITEM DESCRIPTION QTY PART NO
Gasket Kit FRQVLVWVRI 75-1023
$GDSWHU*DVNHW 
 %RWWRP&DS2ULQJ  
 6WHP2ULQJ  
6WHP:DVKHU 

 6WHP3DFNLQJ  
 3DFNLQJ1XW  
 6HDO&DS2ULQJ  
 )ODQJH*DVNHW  
6ROHQRLG7XEH2ULQJ 
3RUW*DVNHW2ULQJ ($ 
 0DQXDO2SHQLQJ6WHP  
 6HDO&DS.LW 
 *DXJH3RUW3OXJ137  
D $GDSWHU.LW3RUW  
E $GDSWHU.LW3RUW  
 $GDSWHU+H[6FUHZV[  
 %RWWRP&DS  
 %RG\  )$&725<
 )ODQJH9DULRXV  )$&725<
 )ODQJH%ROW[  
)ODQJH1XW  
ITEM DESCRIPTION QTY PART NO
Piston Kit FRQVLVWVRI 75-1019
3LVWRQ  
3LVWRQ6HDO 
$GDSWHU*DVNHW 
 )ODQJH*DVNHW  
V-Port/Seal Kit 3/4" * 75-1020
V-Port/Seal Kit 1" * 75-1021
V-Port/Seal Kit 1-1/4" * 75-1022
Above kits consist of:
D 93RUW6HDW  
E 93RUW6HDW  
F 93RUW6HDW  
 &ORVLQJ6SULQJ  
%RWWRP&DS2ULQJ
$GDSWHU*DVNHW

 

Above kits contain V-Port/Seat, bottom cap O-ring, bonnet gasket,
and a 5 psid (.35 bar) closing spring (Part 75-0622). A lighter spring
is available (Part 75-0287).
*HA4AK AND HA4AO V-PORT/SEAT KITS
DESCRIPTION PART NO
V-Port/Seat Kit ¾" 75-1129
V-Port/Seat Kit 1" 75-1130
V-Port/Seat Kit 1¼" 75-1131
* Adapter kit includes adapter, seal cap, manual open stem,
gauge port plug, adapter gasket, stem packing, packing nut,
and stem o-ring.
*
*
15 R429d
AUG 2015

PARTS LIST 1½" THROUGH 4" (40mm THROUGH 100mm)
Piston Kit 1-1/2", 2" 75-1025
Piston Kit 2-1/2" 75-1026
Piston Kit 3" 75-1027
Piston Kit 4" 75-1028
Above kits consist of:
D 3LVWRQ  
E 3LVWRQ  
F 3LVWRQ  
G 3LVWRQ  
D 3LVWRQ6HDO  
E 3LVWRQ6HDO  
F 3LVWRQ6HDO  
D $GDSWHU*DVNHW 
E $GDSWHU*DVNHW 
F $GDSWHU*DVNHW 
D )ODQJH*DVNHW  
E )ODQJH*DVNHW  
F )ODQJH*DVNHW  
G )ODQJH*DVNHW  
V-Port/Seat Kit 1-1/2" 75-1029
V-Port/Seat Kit 2" 75-1030
V-Port/Seat Kit 2-1/2" 75-1031
V-Port/Seat Kit 3" 75-1032
V-Port/Seat Kit 4" 75-1033
Above kits consist of:
D 93RUW6HDW  
E 93RUW6HDW  
F 93RUW6HDW  
G 93RUW6HDW  
H 93RUW6HDW  
D $GDSWHU*DVNHW 
E $GDSWHU*DVNHW 
F $GDSWHU*DVNHW 
D 6HDW6HDO2ULQJ  
E 6HDW6HDO2ULQJ  
F 6HDW6HDO2ULQJ  
 6HDW6FUHZ  
D &ORVLQJ6SULQJ  
E &ORVLQJ6SULQJ  
F &ORVLQJ6SULQJ  
G &ORVLQJ6SULQJ  
D 6HDW5LQJ  
E 6HDW5LQJ  
F 6HDW5LQJ  
G 6HDW5LQJ  
D 0DQXDO2SHQLQJ6WHPWKURXJK  
E 0DQXDO2SHQLQJ6WHP  
D 6HDO&DS.LWWKURXJK  
E 6HDO&DS.LW
ITEM DESCRIPTION QTY PART NO
Gasket Kit 1-1/2", 2" 75-1039
Gasket Kit 2-1/2" 75-1040
Gasket Kit 3" 75-1041
Gasket Kit 4" 75-1042
Above kits consist of:
D$GDSWHU*DVNHW 
E$GDSWHU*DVNHW 
F$GDSWHU*DVNHW
D 6HDW6HDO2ULQJ  
E 6HDW6HDO2ULQJ  
F 6HDW6HDO2ULQJ  
D %DFN8S:DVKHUWKURXJK  
E %DFN8S:DVKHU  
D 6WHP2ULQJWKURXJK  
E 6WHP2ULQJ  
D 6WHP:DVKHUWKURXJK  
E 6WHP:DVKHU  
D 6WHP3DFNLQJWKURXJK  
E 6WHP3DFNLQJ  
D 3DFNLQJ1XWWKURXJK  
E 3DFNLQJ1XW  
D 6HDO&DS2ULQJWKURXJK  
E 6HDO&DS*DVNHW  
D 6WHP3LQWKURXJK  
E 6WHP3LQ  
D )ODQJH*DVNHW  
E )ODQJH*DVNHW  
F )ODQJH*DVNHW  
G )ODQJH*DVNHW  
6ROHQRLG7XEH2ULQJ 
3RUW2ULQJDQG*DVNHW ($ 
D $GDSWHU.LW3RUW  
E $GDSWHU.LW3RUW  
F $GDSWHU.LW3RUW  
G $GDSWHU.LW3RUW  
H $GDSWHU.LW3RUW  
I $GDSWHU.LW3RUW  
 *DXJH3RUW3OXJ137  
D $GDSWHU+H[6FUHZV
[

E $GDSWHU+H[6FUHZV[  
F $GDSWHU+H[6FUHZV[  
 %RG\  )$&725<
 )ODQJH9DULRXV  )$&725<
D )ODQJH%ROW[  
E )ODQJH%ROW[  
F )ODQJH%ROW[  
D )ODQJH1XW  
E )ODQJH1XW  
F )ODQJH1XW  
ITEM DESCRIPTION QTY PART NO
* Adapter kit includes adapter, seal cap, manual open stem,
gauge port plug, adapter gasket, stem packing, packing nut,
and stem o-ring.
*
*
*
*
*
*
16
R429d
AUG 2015

PARTS LIST 1½" THROUGH 4" (40mm THROUGH 100mm)
14
17 15
16
13
12
11
10
9
20
18
3
4
5
6
23
22
8
7
25
21
24
1
2
19
SIIP
AR1
SI
AR3
17 R429d
AUG 2015

PARTS LIST 5" AND 6" (125mm AND 150mm)
Piston Kit 75-1110
Above kit consists of:
 3LVWRQ  
 3LVWRQ6HDO  
$GDSWHU2ULQJ,QQHU  
$GDSWHU2ULQJ2XWHU  
Gasket Kit 75-1111
Above kit consist of:
$GDSWHU2ULQJ,QQHU  
$GDSWHU2ULQJ2XWHU  
 6HDW6HDO2ULQJ  
 %DFNXS:DVKHU  
 6WHP2ULQJ  
 6WHP:DVKHU  
 6WHP3DFNLQJ  
 3DFNLQJ1XW  
 6HDO&DS*DVNHW  
 0DQXDO2SHQLQJ6WHP3LQ  
6ROHQRLG7XEH2ULQJ 
3RUW2ULQJDQG*DVNHW ($ 
ITEM DESCRIPTION QTY PART NO
V-Port/Seat Kit 5" 75-1112
V-Port/Seat Kit 6" 75-1113
Above kits consist of:
D 93RUW6HDW  
E 93RUW6HDW  
 $GDSWHU2ULQJ,QQHU  
 $GDSWHU2ULQJ2XWHU  
 6HDW6HDO2ULQJ  
 6HDW6FUHZ[  
 &ORVLQJ6SULQJ  
 6HDW5LQJ  
 0DQXDO2SHQLQJ6WHP  
 6HDO&DS.LW  
 $GDSWHU.LW  
 *DXJH3RUW3OXJ  
 $GDSWHU+H[6FUHZV[  
 %RG\  )$&725<
ITEM DESCRIPTION QTY PART NO
* Adapter kit includes adapter, seal cap, manual open stem,
gauge port plug, adapter gasket, stem packing, packing
nut, and stem o-ring.
1
2
4
5
7
8
9
10
11 12 13 14
15
16
17 18
19
20
21
6
AR1 AR3
PORT FOR PARALLEL
CONNECTION (AD, AB)
PORT FOR SERIES
CONNECTION (AS)
3
22
PLUG HERE
FOR SERIES
CONNECTION
(PART #75-0694)
INLET GAUGE
PORT
*
18
R429d
AUG 2015

SERVICE AND MAINTENANCE
Failure to open: Wrong coil or control module pilot;
low line voltage; controlling switch or thermostat not
contacting; coil is burned-out; adjacent shut-off valve
closed; adapter gasket hole not aligned with hole in body
and adapter; dir t packed under Teflon seal ring enabling
excessive blow by; large quantity of dirt particles in
solenoid module passages; dirt blocking internal pilot
passages; main valve seat is dirt jammed.
Failure to close: Controlling switch or thermostat not
opening contacts; manual-opening stem is turned in;
valve installed in wrong direction; damage or dirt at
main valve seat or pilot seat; piston bleed hole plugged.
Under extreme conditions of liquid or oil “slugging” or
pressure drops exceeding 45 psi (3.1 bar g), special
construction may be required. Contact the factory.
Before opening the regulator or disassembling the
pilot for service, be sure it is isolated from the
system and all refrigerant is removed (pumped out
to zero pressure). Follow usual refrigeration system
safe servicing procedures. Read the CAUTION section
of this bulletin on page 20.
To check solenoid pilot section of valve, disconnect
the electrical coil. Unscrew the coil nut and remove
washer. Lift coil housing away from valve. Remove the
four solenoid tube screws and remove solenoid tube
from valve. Inspect for dirt and damage to Teflon seat
and stainless steel pilot orifice. Clean, polish or replace
parts as necessary, then reassemble.
¾" through 1¼" (20mm through 32mm): Use a 3⁄8"
male hexagon wrench to loosen the four adapter bolts,
proceeding slowly to avoid refrigerant which may still
remain in the valve. If piston parts are stuck, remove
the 2" hex bottom cap in order to separate the valve
V-port/seat from the disc piston. Inspect disc and piston
bore for burrs, nicks, and other damage. Remove burrs
and nicks, clean or replace disc piston and Teflon seal
ring as necessary. Long-life seal on disc piston need
only be replaced when damaged or severely worn. If
replacing the disc piston seal, make sure the seal is
properly installed, with the edge up, and does not “twist”
during installation. Inspect V-port/seat and main valve
seat for nicks, marks, etc. The main valve seat may be
lapped by hand or power drill to remove marks. Clean,
polish or replace parts as necessary. If necessary, the
V-port tapered seat may be reconditioned by removing
up to 0.04" (1mm) of Teflon from it on a lathe. Lightly
lubricate all parts and gaskets with soft rag containing
refrigerant oil. Align hole in valve body, adapter gasket,
and adapter to assure proper operation. Reassemble
valve. Carefully check valve for leaks before returning
it to service.
1½" through 6" (40mm through 150mm): Loosen
adapter bolts using a 12" adjustable wrench (15"
wrench for 5" and 6" valves), being careful to avoid any
refrigerant which may still remain in the valve. If disc
piston is difficult to remove, insert a ¼"-20 threaded
screw (3⁄8"-16 for 5"& 6" valves) into center of piston and
lift straight-up. Inspect piston and piston bore for burrs,
nicks and other damage. Remove burrs and nicks, clean
or replace piston as necessary. Long-life seal on disc
piston need only be replaced when damaged or severely
worn. If replacing the disc piston seal, make sure the
seal is properly installed, with the edge up, and does
not “twist” during installation. These valves also have
a removable stainless steel main valve seat. To remove
seat ring for inspection, first remove small hex head seat
screw. Turn the seat ring counterclockwise by turning
it out with a wrench and a steel bar tool positioned
horizontally or by carefully tapping the seat ring notch
with a punch and a hammer. Inspect the V-port/seat
and main valve seat for nicks, marks, and divots. The
main valve seat may be lapped by hand or power drill
to remove marks. Grease and replace the seat seal
O-ring. Clean and polish, or replace the parts as
necessary. If necessary, the V-port tapered seat may be
reconditioned by removing up to 0.04" (1 mm) of Teflon
from it on a lathe. Lightly lubricate all parts and gaskets
with a soft rag containing refrigerant oil. Align the hole
in the valve body, adapter gasket, and adapter to assure
proper operation. Reassemble the valve. Carefully check
the entire valve for leaks before restoring it to service.
MANUAL OPENING
The manual-opening stem is designed to open the
valve, allowing upstream and downstream pressures to
equalize when needed for servicing, but not necessarily
to create a full-flow condition. The stem is located on
the top of the adapter cover. Slowly remove the seal cap
from the manual-opening stem, being cautious to avoid
any refrigerant which may have collected under the cap.
Using an appropriate wrench, turn the stem in (clockwise)
to open the valve manually; counterclockwise to return
the valve to automatic operation. Do not leave the stem
partially open because it may be dynamically damaged.
ABBREVIATIONS
BW: Butt Weld end to match American Pipe
Schedule 40
CRN: Canadian Registration Number
CSA: Canadian Standards Association
Cv: Valve capacity factor GPM (U.S.) of water at 1 psi
differential
FPT: Female Pipe Thread, American National Standard
Kv: Valve capacity factor m3/hr of water at 1 bar g
differential
mA: milliampere
MPT: Male Pipe Thread, American National Standard
NEMA: National Electrical Manufacturers
Association: Class 4, watertight, approximate
equivalent to IP65; Class 1, general purpose,
approximate equivalent to IP20
NPT: National Pipe Thread
ODS: Outside Diameter Sweat, for copper tubing
PLC: Programmable Logic Controller
psig: Pounds per square inch, gauge
R/S: Refrigerating Specialties Division, Parker
Hannifin Corp.
SPDT: Single Pole Double Throw
SW: Socket Weld to accommodate American and API pipe
WN or Weld: Weld Neck to match American Pipe
Schedule 40
19 R429d
AUG 2015

REGULATOR ACCESSORIES
STRAINERS
Generous capacity, separate, close-coupled,
60 mesh (233 Micron Rating), accessible.
GAUGES
Pressure gauges have 3½" (90mm) diameter
faces, safe plastic lenses, ¼" NPT connection,
and recalibration features. Available for ammonia
and halocarbon.
GAUGE VALVES
HGV1 “Long Neck” Gauge Valve, Seal Cap,
¼" MPT x FPT.
PILOT LIGHTS
Beacon Pilot Lights (green, red, or amber).
CONVERSIONS
1" (inch) = 25.4m
Δ1°F = Δ5/9°C
Temperature in °F = 1.8°C + 32
Temperature in °C = 5/9(°F – 32)
1 psi = 0.06895 bar = 6.895 kPa
Cv (U.S. GPM) = Kv multiplied by 1.156
1 U.S. Gallon = 0.8327 Imperial Gallons = 3.7854
liters
1 U.S. GPM (gallons per minute) = 0.06309 dm3/s
(or L/s) = 0.227124 m3/hr
1 American Standard Commercial Ton of Refrigeration
= 12000 Btu/h = 3024 kcal/h = 3.517 kW
CAUTION
Hansen valves are for refrigeration systems only. These
instructions must be completely read and understood
before selecting, using or servicing Hansen valves and
electronics. Only knowledgeable, trained refrigeration
mechanics should install, operate, or service. Stated
temperature and pressure limits should not be exceeded.
Bonnets, solenoid tubes, etc. should not be removed
from valves unless system has been evacuated to zero
pressure. See also Safety Precautions in the current
List Price Schedule and the Safety Precautions Sheet
supplied with the product.
WARRANTY
All Hansen products, except electronics, are guaranteed
against defective materials or workmanship for one
year F.O.B. factory. Electronics are guaranteed against
defective materials or workmanship for 90 days F.O.B.
factory. No consequential damages or field labor is
included.
ORDERING INFORMATION, HA4A
MODULAR PRESSURE REGULATORS
5" & 6" are type HA4W with integral butt weld end only. 1¼" is
standard 2-bolt flange design; 4-bolt flange style available upon
request to field replace 1¼" R/S.
†25% and 50% Reduced Capacity Plugs are also available.
Weld-In-Line Available; contact Factory
TO ORDER: Specify type, connection style and size,
range, voltage for coil, and close-coupled strainer if
required. The strainer is a separate stainless steel 60
mesh unit which usually connects directly to the regulator
inlet. Optional pilot lights are available in green, red, and
amber. Please specify color and voltage when ordering
the valve.
TYPICAL SPECIFICATIONS
“Refrigerant pressure regulators shall be pilot-operated,
with disc-type pistons having Teflon seals, manual-
opening stems, equipped with removable pilot modules,
Teflon main seats and stainless steel pilot trim and
optional, close-coupled inlet strainers, as manufactured
by Hansen Technologies Corporation or approved equal.”
OTHER PRODUCTS
Small Pressure Regulators and Reliefs
Gauge, Purge, and Needle Valves
Shut-Off Valves
Hand Expansion Valves (Regulators)
Refrigerant Solenoid Valves
Refrigerant Check Valves
Gas-Powered Valves
Refrigerant Float Switches
Float Drain Regulators
Refrigerant Liquid Pumps
AUTO-PURGER®s
Vari-Level®Adjustable Level Controls
Techni-Level®Transducer Probes
Frost Master®Defrost Controllers
Pressure-Relief Valves
PORT
SIZE
(mm)
FLANGE CONNECTION
STYLES & SIZES
FPT, SW, WN ODS
STD ALSO STD
†3/4" (20)
1" (25)
1¼" (32)
3/4"
1"
1¼"
1", 1¼"
¾", 1¼"
¾", 1"
7⁄8"
11⁄8"
13⁄8"
1½" (40)
2" (50)
1½"
2"
2"
1½"
15⁄8"
21⁄8"
2½" (65)
3" (80)
4" (100)
2½"
3"
4"
3"
—
—
25⁄8"
31⁄8"
41⁄8"
5" (125)
6" (150)
5" BW
6" BW
—
—
—
—
20
R429d
AUG 2015
© 2015 Hansen Technologies Corporation
Hansen Technologies Corporation
400 Quadrangle Drive, Suite F
Bolingbrook, Illinois 60440 USA
Tel: [phone] Fax: [phone] Toll: 800.426.7368
Email: [email protected] Web: www.hantech.com
USA ∙Asia ∙Europe ∙India ∙Latin America ∙Middle East