Parker CK-6D User manual

Contact Information:
Parker Hannin Corporation
Sporlan Division –
Refrigeration Business Unit
2445 South 25th. Avenue
Broadview, IL 60155-3891
phone [phone]
fax [phone]
www.parker.com/rs
[e-mail]
Product Bulletin 50-25 E
Dual Gas Powered Suction
Stop Valve
Purpose:
The CK-6D from Parker is an
economical solution to evaporator
equalization following a defrost cycle.
Combining equalizing and suction
stop functions reduces installation
costs.
This valve incorporates a pressure
pilot, built-in mechanical fail-
safe feature which prevents the
undesirable effects of an immediate
opening of the valve in the event of
an electrical power failure while the
evaporator is in defrost.
CK-6D is typically used for low
temperature applications in overfeed
or ooded systems, in wet return
lines, and on the liquid and gas
return legs of ooded evaporators.
Type: CK-6D
Product Features:
• Suitable for Ammonia, R-22,
R-134a, R-404A, R-410A, R-507,
and Other Common Refrigerants
• Economical Solution to
Evaporator Equalization after
Defrost
• Normally Open
• Low Pressure Drop
• Manual Opening Stem
• Port Sizes: 40 to 100 mm
(1- 5/8 to 4”)
• Use in Vertical or Horizontal Lines
• Temperature Range: -51 to
104°C (-60 to 220°F)
• Maximum Rated Pressure
(MRP): 28 barg (406 psig)
• Heavy Return Spring
• Minimum Pressure Drop to
Close: 0.35 bar (5 psi)
CK-6D with S6A Pilots

Page 2 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
Technical Data
Body Material .............................Ductile Iron
Seat Material .............................. Ductile Iron
Refrigerant Temperature Range* ...-51 to 104°C (-60 to 220°F)
Ambient Temperature Range:
AC Coils ....................-60 to 60°C (-76 to 140°F)
DC Coils ....................-25 to 60°C (-13 to 140°F)
Maximum Rated Pressure (MRP) ..........28 bar (406 psig)
Description
The CK-6D is based on the same valve body, principles,
and length dimension as the standard CK-5 valves
making for easy field replacements. This heavy duty
gas-powered valve is suitable for ammonia, R-22, and
other reigerants, certain oils and other fluids approved
for use in reigeration. The CK-6D is a pilot operated,
dual-position valve. This valve is equipped with a manual
opening stem and A2D pressure pilot.
These valves are piston-type, gas powered, and normally
open. They are heavy duty, semi-steel bodied valves that
are built with control precision. The CK-6D is a normally
open valve and will open remain open if open on power
failure or open to it’s intermediate position if closed on
power failure and the inlet pressure exceeds the set point.
The Type CK-6D Gas-Powered Valve is furnished with FPT
Internal NPT (U.S. Standard Taper Pipe Thread), Socket
Weld, Weld Neck or ODS (solders over copper piping of
given diameter) connections. The valve may be easily
removed om between the flanges for servicing.
Purpose & Applications
These valves are employed as low pressure drop, gas-pow-
ered suction stop valves for low temperature evaporators.
Table of Contents
Technical Data ......................................2
Description ........................................2
Purpose & Applications ...............................2
Parts Description ...................................3
Principle of Operation ................................4
Electrical ..........................................5
General Coil Information ..........................5
Explosion View & Material List .........................7
Replacement Part Kits................................9
Dimensions .......................................11
Installation ........................................12
Pressure Pilot Adjustment ............................12
Manual Opening Operation ...........................12
Service Pointers ...................................13
Torque Recommendations ...........................13
Minimum Pressure to Open..................0 bar (0 psig)
Minimum Pressure above, Inlet Pressure to Close Valve . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.35 bar (5 psig)
Because of the return spring, there is no line pressure
drop required to open the valve during reigeration. This
allows for a minimal pressure drop penalty in the suc-
tion line. The CK-6D will positively close the suction line
allowing for deost to occur. The dual position feature
permits the evaporator pressure to equalize with the
suction pressure aer a deost cycle has occurred. The
intermediate stage allows for this equalization to occur in
a controlled manner without the need for an externally
piped equalizing solenoid.
The CK-6D is a unique control valve that also incorpo-
rates a built-in mechanical fail-safe feature which pre-
vents the undesirable effects of an immediate opening of
the valve in the event of an electrical power failure while
the evaporator is in deost.
This valve is designed for a positive closing of the suction
line, liquid overfeed, flooded evaporator gas return lines
during deosting in low temperature applications. Due to
it is a gas power suction stop valve that closes, the valve
can operate even under oil conditions. Recommendations
assume no highly viscous oil, dirt, moisture or foreign
substance in reigerant; also no abnormal shock impact
below -32°C (-25°F).
CK-6D Valve General InformationCK-6D Valve General Information
Port
Size
Flow
Coefficient
ConnectionsConnections
Pilot
Solenoid
Pressure
Pilot
WeightWeight
FPT[1], SW, WN ODS With FlangesWith Flanges Less FlangesLess Flanges
mm inch Kv Cv mm inch mm inch KgKg LbsLbs KgKg LbsLbs
40 15⁄832 37 38*,50 1½*, 2 54*,66 21⁄8*,25⁄8S6B[2]/S6A A2DK/A2D 28 62 25 55
50 2 44 51 40,50*1½, 2*54*,66 21⁄8*,25⁄8S6B[2]/S6A A2DK/A2D 28 62 25 55
65 2½ 70 82 65*,80 2½*, 3 66*,80 25⁄8*,31⁄8S6B[2]/S6A A2DK/A2D 36 79 34 75
75 3 103 120 75 3 80*,92 31⁄8*,35⁄8S6B[2]/S6A A2DK/A2D 50 110 47 104
100 4 171 200 100 4 105 41⁄8S6A A2DK/A2D 74 163 71 157
*Standard Connection.
1. FPT Flanges are only available in sizes: 32 to 50 mm (1-¼ to 2”).
2. Valves containing S6B coils can be installed in a vertical or horizontal position.
* Recommended application temperature above -32°C (-25°F).
Contact factory for proper selection assistance, if required.

Bulletin 50-25 E - Page 3Dual Gas Powered Suction Stop Valve (CK-6D)
Figure 1: CK-6D Valve Part Descriptions 40mm to 100mm (1-5/8” to 4”) Port Size.
Parts Description
Solenoid Pilot #2
Top View
Solenoid Pilot #1 Pressure Pilot
Pressure Pilot
Solenoid Pilot #2
Solenoid Pilot #1
Strainer Disc
Secondary Piston
Primary Piston
Opening Spring
“N” Passage
Adjustable
Pressure Stem
Bleed Hole
Manual Opening Stem
High Pressure
Gas Connection
Seal Cap
Bore Plate
Adapter
Cross Section View

Page 4 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
Principle of Operation
The CK-6D is a normally open valve which uses dis-
charge gas to power the valve closed. For closing of the
CK-6D, either energize both solenoid coils simultaneously,
or energize solenoid coil #2 initially allowing condenser
gas pressure or pressure om another source to act on
the secondary piston forcing it down and closing the
valve to the 1st stage. Then while keeping solenoid coil
#2 energized, solenoid coil #1 is energized allowing gas
pressure to act on the primary piston forcing it down,
compressing the spring fully, and firmly seating on the
valve seat bead.
Sporlan Division - Reigeration Business Unit
recommends utilizing an oil ee source of gas such as
that om the top of the high-pressure receiver, or rotary
screw compressor system. The valve will not close unless
pressure above the pistons exceeds the downstream
pressure by at least 0.35 bar (5 psi). If an attempt is made
to fully close the valve by only energizing solenoid coil
#1, a far greater amount of pressure will be required to
act upon the main piston.
For line equalization solenoid coil #1 is de-energized,
while solenoid coil #2 remains energized, allowing the
primary piston to move up to the bottom of the secondary
piston, allowing for evaporator equalization aer deost.
The length of time the valve is le in the equalization
position is controlled by the time set in the equalization
stage on the deost controller.
Aer the termination of the hot gas injection period,
any style of suction stop valve must reopen in order
for reigeration to resume. For the CK-6D to open, the
valve’s pilot solenoids de-energize, thereby interrupting
the pilot stream flow of discharge gas to the top of
the valve’s pistons. The main valve will open to it’s
intermediate position, however, since residual pressure in
the coil is transmitted through the pilot regulator to the
top of the top piston. (See Figure 1 and 2).
NOTE: The pilot regulator should keep or maintain a
minimal set point, approximately 0.69 barg (10 psig)
above the pressure of the deost relief or equalizing line,
otherwise the valve will not open.
De-energizing only the solenoid feeding the lower piston
will allow some flow to pass and equalize pressures
between the coil and the suction line. It is imperative to
allow sufficient time for this equalization. The ability of
the CK-6D to resist opening fully during an interruption
of power, while an evaporator is in the process of
defrosting, is its single greatest advantage. Where power
failures can occur with any frequency, consideration
should be given to this unique valve. By design, a standard
CK-2 or a competitive valve of similar design would open
immediately as residual coil pressure surges through the
valve should power to the pilot solenoid suddenly be
interrupted during a defrost. The design of the CK-6D
prevents this from occurring and prevents the dangerous
consequences to the system under these conditions. In
the event the CK-6D pilot solenoid de-energizes due
to a power failure while the evaporator is in defrost,
the defrost coil pressure (typically at or about 4.8 barg
(70 psig) for ammonia) will continue to be transmitted
through passage “N”, through the pilot regulator and
to the top of the piston. This pilot pressure acts as a
“closing” force acting upon the larger effective area of the
top of the piston, and will overcome the “opening” force
of coil pressure working against the underside of the
piston. The valve will therefore remain closed due to the
greater closing force until the coil pressure is equalized
through the piston bleed hole.
If the defrost relief line is connected to an intermedia
pressure/temperature line (higher than the suction line
of the particular application), the pressure setting of
pressure pilot of the CK-6D needs to be 0.69 barg (10 psig)
above the pressure of the defrost relief or equalizing line,
otherwise the valve will not open.
CK-6D Function
Coil Action Function
#1 De-energized Full Open
(Normal Operation During Refrigeration)
#2 De-energized
#1 Energized Full Close
(Defrost)
#2 Energized
#1 De-energized Equalization
#2 Energized
NOTE: The valve stays in equalize position if inlet pressure
exceeds pilot body setting.
SEQUENCE TO CLOSE: First Energize Coil #2 and then Coil #1.
This way you avoid bypass gas and close the valve.
Coil #2
Top View
Coil #1 Pressure Pilot

Bulletin 50-25 E - Page 5Dual Gas Powered Suction Stop Valve (CK-6D)
Electrical
The pilot solenoids used on CK-6D stop valves, type S6A
or S6B, are unique to the Sporlan Division - Reigeration
Business Unit line of control valves. The coils are
designed for long life and powerful opening force. The
standard coil housing meets special requirements, this
sealed construction can withstand direct contact with
moisture and ice. For class “H” coil construction will
permit coil temperatures, as measured by resistance
method, as high as 180°C (356°F). By definition, class
“F” coil construction will permit coil temperatures, as
measured by resistance method, as high as 155°C (311°F).
Final coil temperatures are a function of both fluid and
ambient temperatures.
The higher fluid temperatures require lower ambient
temperatures so the maximum coil temperature is not
exceeded. Conversely, low fluid temperatures permit
higher ambient temperatures. A solenoid coil should
never be energized except when mounted on its
corresponding solenoid tube.
The solenoid coil must be connected to an electrical line
with Volts and Hertz the same as stamped on the coil The
supply circuits must be properly sized to give adequate
voltage at the coil leads even when other electrical
equipment is operating. The coil is designed to operate
with line voltage om 85% to 110% of rated coil voltage.
Operating with a coil voltage above or below these limits
may result in coil burnout. Also, operating with a coil
voltage below the limit will definitely result in lowering
the valve’s maximum opening pressure differential.
CK-6D General Coil Information
S6A Coils
Coil
(Volts/Hz)
Power
Lead
Neutral
Lead
Inrush
Current
(Amps)
Running
Current
(Amps)
Fuse
Size
(Amps)
Temp
ºC (ºF)
24/50 Brown White 6.82 2.99 4 250 (482)
24/60 Brown White 6.70 2.73 4 250 (482)
48/50 Brown White − 1.07 − 250 (482)
115/50 Purple White 1.22 0.21 1 90 (194)
120/60 Blue White 1.18 0.46 1 90 (194)
208/60 Red White 0.63 0.24 1 90 (194)
230/50 Yellow White 0.65 0.26 1 90 (194)
240/50 Black White 0.59 0.24 1 90 (194)
240/60 Orange White 0.60 0.23 1 98 (208)
12 DC Brown White − − − −
24 DC Brown White 6.70 6.70 − 204 (400)
48 DC Brown White − − − −
Notes:
Leaded coils are provided with 18 gauge wires at 914 mm (36”) in
length.
S6B Coils
Coil
(Volts/Hz)
Power
Lead
Neutral
Lead
Inrush
Current
(Amps)
Running
Current
(Amps)
Fuse
Size
(Amps)
Temp
ºC (ºF)
110-120
/50-60 Black Green 0.66 0.42 1
180°C
(356°F)
208/50 Black Green 0.35 0.22 1
220-240
/50-60 Black Green 0.33 0.21 1

Page 6 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
Pilot Type Image Terminal
Diagram Classification Voltages/ Frequencies
Wattage
(Holding) Certifications
S6A
Leaded
Start Winding: White Wire
End Winding: Black Wire
Class “F” approved
system with housing
meeting 3R and 4
requirements
18" Leaded Wires
NEMA 3R and 4
24 VAC/50 Hz
24 VAC/60 Hz
115 VAC/50 Hz
120 VAC/60 Hz
208 VAC/60 Hz
230 VAC/50 Hz
240 VAC/50 Hz
240 VAC/60 Hz
12 VDC [1]
24 VDC [1]
−
−
34.0
34.0
32.5
32.5
35.0
37.5
−
32
CSA
UL [2]
DIN QD
Class “F” approved
system with housing
meeting 3R and 4
requirements
NEMA 3R and 4
IP65
24 VAC/50 Hz
48 VAC/50 Hz
115 VAC/50 Hz
230 VAC/50 Hz
240 VAC/50 Hz
−
42.5
N/A
34.5
30.0
CSA
CE
UL [2]
Class “F” approved
system with housing
meeting 3R and 4
requirements
NEMA 3R and 4
24 VAC/60 Hz
120 VAC/60 Hz
240 VAC/60 Hz
24 VDC [1]
48 VDC [1]
−
35.5
37.5
32.0
42.5
CSA
UL [2]
S6B Leaded
Start Winding: White Wire
End Winding: Black Wire
Standard Molded
Class “H”
#18 AWG 18"
Leaded Wires
NEMA 3R and 4
110/120 VAC 50/60 Hz
208 VAC 60 Hz
220-240 VAC 50/60 Hz
18.5 W CE
Notes:
- Consult factory for other voltages/frequencies.
- See current price list ILP- for coil part numbers.
- Optional LED pilot light knob kit (green or red) that indicates when the coil is energized. LED knob kits can be used with 115 to 240 Volts AC coils only.
[1] DC coils are limited to an ambient temperature of -25°C to 60°C (-13°F to 140°F).
[2] Only on approved coils.
Terminal 1- Power
Terminal 2- Electrical Neutral
Ground
Terminal 1- Power
Terminal 2- Electrical Neutral
Ground

Explosion View & Material List
Figure 2: Explosion View CK-6D Dual Gas Powered Suction Stop Valve
20
1
22
23
22
24
25
27
S6B
Solenoid
Pilot
S6A Solenoid Pilot
2
3
4
5
6
78
9
10
11
12
13
14 15
17 18
19
18
50
26
29
30
19
19
49
48
31
32
34
35
36
37
42
43
44
46
45
51S
51L
52
53
50
19 59
58
55
56
57D
57A
54
16
A2D
Pressure
Pilot
21
21
47
3940 38
41
A2D Pressure Pilot
28
33
26A
Bulletin 50-25 E - Page 7Dual Gas Powered Suction Stop Valve (CK-6D)

Page 8 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
CK-6D Material List
Item Description Material Qty
1 Seal Cap, A2D Aluminum 2011-T3 1
2 Gasket, Seal Cap, A2D Nylon 1
3 Nut, Packing, A2D 303 S.S. 1
4 Packing, Stem, A2D Crane Foil 1
5 Washer, Packing, A2D Teon, Carbon 1
6 Stem, Pressure Pilot, A2D 303 S.S. 1
7 Bonnet, A2D Cast Iron 1
8 Screw, Pressure Pilot, A2D Steel Grade 5 Zinc 8
9 Plate, Spring, Upper, A2D Carbon Steel 1
10 Spring, Range A, A2D ASTM A401 1
11 Plate, Spring, Lower, A2D Carbon Steel 1
12 Follower, Diaphragm, A2D Carbon Steel 1
13 Gasket, Diaphragm, A2D Garlock 2930 Non-asbestos 1
14 Diaphragm, A2D Stainless Steel 1
15 Seat, A2D 303SS ASTM A582 1
16 Gasket, Bonnet, A2D Garlock 2930 Non-asbestos 1
17 Body base, A2D Cast Iron 1
18 Bolt, A2D
HEX HD ¼” - 20 x 1-¼” L Steel Grade 5 Zinc 4
19 O-ring, A2D, S6A & S6B Neoprene 6
20 Bolt, Disc Strainer 7/16” - 14 x 2- ½” L Steel Grade 5 Zinc 2
21 Flange, Disc Strainer ASTM A-105 2
22 Gasket, Disc Strainer Garlock 2930 Non-asbestos 2
23 Strainer, Disc, 60 mesh Carbon 1213/1215 1
24 Nut, Disc Strainer 416 SS 2
25 Pipe, Nipple 3⁄8” x 2L, Disc Strainer 1117 Steel 1
26
Screw, Cover - Adapter, CK-6D, Body 40
to 50 mm (1-5⁄8to 2”) 3⁄8” - 16 X 2- ¼” L
Steel Grade 5 Zinc 6
Screw, Cover - Adapter, CK-6D,
Body 65 mm (2-½”) 3⁄8” - 16 X 2- ½” L
Screw, Cover - Adapter, CK-6D,
Body 75 mm (3”) 5⁄8” - 11 X 4- ½” L
Screw, Cover - Adapter, CK-6D,
Body 100 mm (4”) 5⁄8” - 11 X 5 L
26A Screw, Bore Plate, CK-6D, Body 40 to 65
mm (1-5⁄8to 2-½”) 5⁄16” - 18 X 1- ¼” L Steel Grade 5 Zinc 8
27 Name Plate, CK-6D Aluminum 1
28 Bolt, Name Plate, CK-6D Stl. Zinc Plated 2
29 Adapter, CK-6D Cast Iron GGG 40.3 1
30 Gasket, Adapter/Cover, CK-6D Garlock 2930 Non-asbestos 1
31 Piston, Top, CK-6D 1215 CRS or 1117 Steel and
1018 CR 1
32 Bore Plate, CK-6D Cast Iron GGG 40.3 1
33 Gasket, Body, CK-6D Garlock 2930 Non-asbestos 1
34 Piston Plug, CK-6D Ductile Iron per ASTM A-536 1
35 Spring, Manual Opening, CK-6D ASTM A229 1
36 Stem, Manual Opening, CK-6D 416 SS 1
37 Body CK-6D Ductile Iron per DIN GGG 40.3 1
Item Description Material Qty
38
Nut Flange, CK-6D Body 40 to 50 mm
(1-5⁄8to 2”) 5⁄8” - 11
Steel 8
Nut Flange, CK-6D Body 65 to 75 mm
(2-½ to 3”) ¾” - 10
Nut Flange, CK-6D Body 100 mm (4”)
7/8” - 9
39 Gasket, Flange, CK-6D Garlock 2930 Non-asbestos 2
40 Male Flange, CK-6D Body
40 to 100 mm (1-5⁄8to 4”) ASTM A-105 2
41
Bolt Flange, CK-6D Body, 40 to 50 mm
(1-5⁄8to 2”) BLT, SQ HD 5⁄8” - 11X 3-¼”L
ASTM A 307 GR A ZINC 8
Bolt Flange, CK-6D Body, 65 to 75 mm
(2-½ to 3”) BLT, SQ HD ¾” - 10 X 3-¾”L
Bolt Flange, CK-6D Body, 100 mm (4”)
BLT, SQ HD 7/8”- 9 X 4-½”L
42 Washer, Flat, CK-6D Soft AISI 1010 Carbon Steel 1
43 Packing, Stem, CK-6D ASTM F2168 1
44 Nut, Packing, CK-6D 416 SS 1
45 Gasket, Seal Cap Bottom, CK-6D Nylon 1
46 Seal Cap, CK-6D Aluminum 2011-T3 1
47 Clip Retainer for S6B Coil Solenoid Pilot Spring Steel 1
48 Coil for S6B Solenoid Pilot Standard Molded Class H 1
49 Body, S6B Solenoid Pilot AISI 1214 steel 1
50 Bolt, S6A/S6B Solenoid Pilot
HEX HD ¼” - 20 x 2-¼” L Steel Grade 5 Zinc 8
51L LED Knob Kit, S6A Coil, Solenoid Pilot − 1
51S Standard Knob Kit, S6A Coil, Solenoid
Pilot − 1
52 O-ring, S6A Coil Solenoid Pilot Ethylene Propylene 1
53 Coil for S6A Solenoid Pilot Encapsulated 1
54 Nut, Solenoid Tube, S6A Solenoid Pilot Steel AISI 1010 or AISI 12L14 1
55 Solenoid Tube S6A, VAC Coil, Solenoid
Pilot 304 S.S. 1
56 Gasket, Tube S6A, Solenoid Pilot Wolverine 2
57A Plunger/Needle Assembly S6A, VAC Coil Silicon Iron B Steel 1
57D Plunger/Needle Assembly S6A, VDC Coil Silicon Iron B Steel 1
58 Seat Assembly, S6A Solenoid Pilot 416 S.S. ASTM A484 1
59 Body, S6A Solenoid Pilot ASTM A536 1

Bulletin 50-25 E - Page 9Dual Gas Powered Suction Stop Valve (CK-6D)
CK-6D Replacement Part Kits
Item Kit Description
Port Size
40 mm
(15⁄8”)
50 mm
(2”)
65 mm
(21⁄2”)
75 mm
(3”)
100 mm
(4”)
1, 2 Seal Cap Kit, Pressure Pilot A2D 202110
2 (12) Gasket Pkg, Seal Cap Pressure Pilot 202408
3-5 Packing Kit, Stem Pressure Pilot 202100
4 (25) Stem Packing, Pkg. Pressure Pilot 202478
4-6 Stem Kit, Pressure Pilot A2D 202120
8 (8) Bolt Pkg. Kit, Bonnet Pressure Pilot A2D 202246
3-6, 9-12 Spring/Stem Kit, Range A, Pressure Pilot 202006
9-11, 13 Spring Kit, Range A, Pressure Pilot 202481
13, 14, 16 Diaphragm Kit, Pressure Pilot A2D 200770
13-16 Seat/Diaphragm Kit, Pressure Pilot 202001
18 (4), 19 (2) Bolt/O-ring Kit, Pressure Pilot A2D 201572
19 (12) O-ring Pkg, Pressure Pilot 202424
1-19 Complete Modular Pressure Pilot A2D,
Range A 201675
19 (2), 50 (4) Bolt/O-ring Kit, S6A or S6B Solenoid Pilot 201574
20 (2), 24 (2) Bolts and Nuts, for Disc Strainer 201580
22 (2), 23 Strainer Kit, Disc 200912
20-25
Strainer Kit, Disc with
Flanges, Bolts, Nuts,
and Gaskets
10mm (3⁄8”) FPT 201665
10mm (3⁄8”) SW 201704
13mm (½”) FPT 201706
13mm (½”) SW 201707
20mm (¾”) SW 201710
26 (6), 29-33 Adapter/Bore Plate Kit, CK-6D 251004* 251010* 251016* 251022*
33-34 Piston Plug Kit, CK-6D 209172 209173 209174 209175 209176
35 Spring Kit, CK-6D 301490 301494 301505 301500
36, 42-44 Stem Kit, CK-6D 201133 201118 201216 251123
38 (4), 39 (1),
41 (4) Union Kit per Flange CK-6D 206516 206217 206218 206219
38 (8), 41(8) Bolts and Nuts Pkg. Flanges per CK-6D
Valve 201604 201614 206052
39 (12) Gasket Kit, Flange CK-6D 202081 202082 202083 202084
40 (2) Flange, CK-6D
Body
FPT 200039 200040 — — —
SW 200041 200042 200049 200054 200063
WN 200043 200044 200050 200055 200064
2-1⁄8ODS 200046 — — —
2-5⁄8 ODS 200047 200051 — —
3-1⁄8ODS — — 200052 251241 —
3-5⁄8ODS — — — 200057 —
4-1⁄8ODS — — — — 200065
42-44 Packing Kit, Manual Opening Stem CK-6D 202100 202101
45-46 Cap Kit, CK-6D 202110 202144 202111
* The new Adapter/Bore (machined cast parts) are NOT backwards compatible with the old version (bar stock) or any design before February 2020. The
new machined parts are compatible with the valve body design, change requiring both adapter and bore plate replacement.

Page 10 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
CK-6D Replacement Part Kits (Cont.)
Item Kit Description
Port Size
40 mm
(15⁄8”)
50 mm
(2”)
65 mm
(21⁄2”)
75 mm
(3”)
100 mm
(4”)
47 (12) Clip Retainer for S6B Coil, Kit 206516
48 Coil, S6B, Solenoid Pilot Refers to current price list ILP- to get the coil part number according to
voltage and frequency
19 (2), 49, 50 (4) Modular Solenoid Pilot, S6B 205073
51S, 52 Standard Knob Kit, S6A Solenoid Pilot
(no LED) 205237
51L, 52 LED Knob Kit, S6A
Solenoid Pilot
Green 208543
Red 208544
53 Coil, S6A Solenoid Pilot Refers to current price list ILP- to get the coil part number according to
voltage and frequency
54-56 Tube Kit, Solenoid S6A 209320
56, 57A, 58 Plunger Seat Kit, S6A VAC 201630
56, 57D, 58 Plunger Seat Kit, S6A VDC 202102
19 (2), 50 (4),
54-59 Modular Solenoid Pilot, S6A VAC 251138

Bulletin 50-25 E - Page 11Dual Gas Powered Suction Stop Valve (CK-6D)
Dimensions
CK-6D Valve Dimensions
A
K
FPT, SW, & ODS Flanges
WN & DIN WN Flanges
H
F
J
Strainer
L
B
E
C
D
Clearance Zone:
1. The top of the CK-6D requires a clearance of 76 mm (3") for the removal of the disc strainer, operation of pilot regulator.
2. The bottom of the CK-6D valve requires a clearance of 102 mm (4") for the removal of bottom cover.
3. Both the left and right side of the CK-6D valve requires a minimum of 76 mm (3") on each side.
* FPT flanges are only available in 40 - 50mm (1-5⁄8” - 2”)
Port Size A B* C** E H J K L
mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch
40 1-5⁄8251 9.9 140 5.5 472 18.6 272 10.7 140 5.5 251 9.9 500 19.7 117 4.6
50 2 251 9.9 140 5.5 472 18.6 272 10.7 140 5.5 251 9.9 500 19.7 117 4.6
65 21⁄2252 9.9 142 5.6 500 19.7 297 11.7 159 6.2 315 12.4 528 20.8 124 4.9
75 3 311 12.2 216 8.5 597 23.5 330 13.0 176 7.0 315 12.4 625 24.6 142 5.6
100 4 359 14.3 219 8.6 652 25.7 361 14.2 222 8.9 363 14.3 681 26.8 158 6.2
* Allow 25mm (1”) below valve to operate manual opening stem.
**Allow 38mm (11⁄2”) above valve for removal of coil.
Port Size
D F
FPT*, SW ODS WN DIN WN
mm inch Connection mm inch Connection mm inch Connection mm inch Connection mm inch
40 1-5⁄8
11⁄2”307 12.1 21⁄8”307 12.1 11⁄2”366 14.4 38mm 364 14.4
2” 25⁄8” 2” 378 14.9 50mm 371 14.6
50 2 11⁄2”307 12.1 21⁄8”307 12.1 11⁄2”366 14.4 38mm 364 14.4
2” 25⁄8” 2” 378 14.9 50mm 371 14.6
65 21⁄2
21⁄2”318 12.5 25⁄8”318 12.5 21⁄2”389 15.3 65mm 388 15.3
3” 31⁄8”3” 406 16.0
75 3 3” 376 14.8 31⁄8”376 14.8 3” 465 18.3 75mm 465 18.3
35⁄8”
100 4 4” 432 17.0 41⁄8”432 17.0 4” 551 21.7 100mm 552 21.7

Page 12 - Bulletin 50-25 E Dual Gas Powered Suction Stop Valve (CK-6D)
Manual Opening Operation
All valves contain a manual li stem. If it is desired to
hold open the CK-6D manually, remove Bottom Sealing
Cap and turn the Liing Stem inward as far as possible.
The valve cannot close now until the Seat Li Stem is
once again turned out.
Installation
All personnel working on valves must be qualified to
work on reigeration systems. If there are any questions
contact Sporlan Division - Reigeration Business Unit
before proceeding with the installation.
All valves are packed for maximum protection. Unpack
carefully, checking to make sure all items are unpacked.
Save the enclosed instruction for the installer and
eventual user.
Do not remove the protective coverings om the
inlet and outlet of the valve until the valve is ready to be
installed.
Protect inside of valve om dirt and chips during
installation.
Never install the valve with its pilot section directly
beneath the main valve. The direct mounted pilot
solenoid on the 40mm through 100mm (1-⅝” through 4”)
port size valves should be maintained above the center
line on a horizontal pipe. When used on a suction or wet
return line, the arrow on the valve should point in the
direction of normal fluid flow. When used on either gas
or liquid legs of a flooded evaporator, the arrow on the
valve body should point om the evaporator to the surge
drum.
The CK-6D Suction Stop Valve with S6B Pilot Solenoids
may be installed on its side or vertically upright in
either vertical or horizontal pipelines. The CK-6D Valves
with S6A pilot solenoids may be installed on its side or
vertically upright pipe line only.
If the CK-6D is replacing a CK-2, S9A, or other gas
powered suction stop valve of the market, the gas feed
pilot solenoid must be removed of the installation and
work with the solenoid pilots that CK-6D has only.
When used on a suction or wet return line, the arrow on
the valve should point in the direction of normal fluid
flow. When used on either gas or liquid legs of a flooded
evaporator, the arrow on the valve body should point
om the evaporator to the surge drum.
Before putting valves into service, all pipe connections,
valve seats, bonnet seals, and stem seals should be tested
for leaks at pressure levels called for in appropriate codes.
‘A’ Max.
Opening
Stem
Maximum Stem Turns Required to Manually Open Valve
Port Size
Normally
Manual Opening
Stem Position
to Open
‘A’ Max. Approximate
Maximum
Stem Turnsmm Inch mm Inch
CK-6D DUAL GAS POWERED SUCTION STOP VALVE
40
50
15⁄8
2Opened IN 28.7 1.1 12
65 2½ Opened IN 33.8 1.3 14
75 3 Opened IN 49.8 2.0 17.5
100 4 Opened IN 43.7 1.7 17
Pressure Pilot Adjustment
The default pressure set point in the pressure pilot is 0.69
bar (10 psi), but the pilot regulator should be adjusted to
maintain a minimum set point of about 0.69 bar (10 psi)
above the pressure of the deost relief or equalizing line
if it were required (otherwise the valve will never open).
Each 0.69 bar (10 psi) represents approximately ½ turn
clockwise of the adjusting stem starting with the stem
turned completely out.
To increase pressure set point regulator turn the stem in
(clockwise). To decrease set point pressure, turn the stem
out (counter-clockwise).

Bulletin 50-25 E - Page 13Dual Gas Powered Suction Stop Valve (CK-6D)
Service Pointers
1. Failure to close: (a) pilot solenoids are not operating
due to low voltage or solenoid coil burnout. (b) Dirt
lodged between the valve piston and the cylinder wall
(disassemble and remove all dirt and burrs). (c) Manual
li stem is turned in, thereby mechanically holding the
piston in the open position. (d) Strainer/Disc in the Pilot
line, flanges may be plugged (Remove and clean). (e) Pilot
pressure source is not high enough; must be at least 0.35
bar (5 psi) above the main valve downstream pressure.
(f) Solenoid coils are not being energized in the proper
sequence.
2. Failure to open: (a) Dirt lodged between the valve
piston and the cylinder walls (Disassemble and remove
dirt and burrs). (b) Main valve spring may be broken
(replace spring). (c) Pressures between remote pressure
source and main valve downstream pressures are not
equalizing. Check for leakage through the pilot solenoids.
Check for backward installation of the CK-6D preventing
the equalization with downstream pressure. (d) Viscous
oil can prevent the valve om opening.
3. Leakage through valve when closed: (a) There are dirt
or chips under the main valve piston. Disassemble valve
and clean thoroughly. b) Damage to piston plug seat
surface or body seat. Replace entire valve piston and lap
grind piston face into valve and seat bead if necessary.
CK-6D Valve - Bolt Torque Recommendations
Port Size Bolt Size Item Description Torque
mm inch N m ft lb
40 - 65 15⁄8 - 2-½ 3/8” - 16 Cover - Adapter Screws 40.1 30
75 - 100 3 - 4 5⁄8” - 11 Cover - Adapter Screws 101.7 75
40 - 65 15⁄8 - 2-½ 5/16” - 18 Bore - Plate Screws 20.3 15
40 - 100 15⁄8 - 4 1⁄4” - 20 A2D/S6B/S6A Screws 10.9 8
10,13 or 20 3⁄8 , ½ or ¾ 7/16” - 14 Flange Bolt for Disc Strainer 38.0 28
40 - 50 15⁄8 - 2 5⁄8” - 11 Flange Bolt 24.3 85
65 - 75 2 ½ - 3 ¾” - 10 Flange Bolt 142.4 105
100 4 7/8” - 9 Flange Bolt 203.4 150

319552RSD ECN: 0372541 02/2023© 2023 Parker Hannin Corporation
ISO 9001 CERTIFIED
Safe Operation (See Bulletin RSBCV)
People doing any work on a refrigeration system must
be qualified and completely familiar with the system and
the Refrigerating Specialties Division valves involved, or
all other precautions will be meaningless. This includes
reading and understanding pertinent Refrigerating
Specialties Division Product Bulletins and Safety
Bulletin RSB prior to installation or servicing work.
Where cold refrigerant liquid lines are used, it is
necessary that certain precautions be taken to avoid
damage which could result from liquid expansion.
Temperature increases in a piping section full of solid
liquid will cause high pressure due to the expanding
liquid which can possibly rupture a gasket, pipe or
valve. All hand valves isolating such sections should be
marked, warning against accidental closing, and must
not be closed until the liquid is removed. Check valves
must never be installed upstream of solenoid valves, or
regulators with electric shut-o, nor should hand valves
upstream of solenoid valves or downstream of check
valves be closed until the liquid has been removed.
It is advisable to properly install relief devices in any
section where liquid expansion could take place. Avoid
all piping or control arrangements which might produce
thermal or pressure shock.
For the protection of people and products, all
refrigerant must be removed from the section to be
worked on before a valve, strainer, or other device is
opened or removed. Flanges with ODS connections are
not suitable for ammonia service.
Warranty
All Refrigerating Specialties products are under
warranty against defects in workmanship and materials
for a period of one year from date of shipment from
factory. This warranty is in force only when products
are properly installed, field assembled, maintained,
and operated in use and service as specifically stated
in Refrigerating Specialties Catalogs or Bulletins for
normal refrigeration applications, unless otherwise
approved in writing by the Refrigerating Specialties
Division. Defective products, or parts thereof returned
to the factory with transportation charges prepaid and
found to be defective by factory inspection, will be
replaced or repaired at Refrigerating Specialties option,
free of charge, F.O.B. factory. Warranty does not cover
products which have been altered, or repaired in the
field, damaged in transit, or have suered accidents,
misuse, or abuse. Products disabled by dirt or other
foreign substances will not be considered defective.
The express warranty set forth above constitutes the
only warranty applicable to Refrigerating Specialties
products, and is in lieu of all other warranties,
expressed or implied, written including any warranty of
merchantability, or fitness for a particular purpose. In
no event is Refrigerating Specialties responsible for any
consequential damages of any nature whatsoever. No
employee, agent, dealer or other person is authorized
to give any warranties on behalf of Refrigerating
Specialties, nor to assume, for Refrigerating
Specialties, any other liability in connection with any of
its products.
WARNING – USER RESPONSIBILITY
Failure or improper selection or improper use of the products described herein or related items can cause death, personal injury and property damage.
This document and other information from Parker Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by
users having technical expertise.
The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance,
maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow
the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is
responsible for determining that such data and specifications are suitable and sucient for all applications and reasonably foreseeable uses of the components or systems.
For safety information see the Safety Guide at www.parker.com/safety or call 1-800-CParker.