Emerson Fisher 1190 User manual

Type 1190
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
re and/or chemical contamination
causing property damage and personal
injury or death.
Fisher™ regulators must be
installed, operated and maintained
in accordance with federal, state and
local codes, rules and regulations
and Emerson Process Management
Regulator Technologies, Inc.
(Emerson) instructions.
If the regulator vents gas or a leak
develops in the system, service to the unit
may be required. Failure to correct trouble
could result in a hazardous condition.
Installation, operation and maintenance
procedures performed by unqualied
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Use qualied
personnel when installing, operating and
maintaining the Type 1190 regulator.
Type 1190 Low-Pressure Gas Blanketing Regulator
August 2020
Instruction Manual
D101644X012
!
WARNING
Introduction
Scope of the Manual
This manual provides installation, startup and
maintenance instructions and parts ordering information
for the Type 1190 low-pressure gas blanketing
regulator (Figure 1) complete with Type T205P pilot and
Type MR95H supply pressure regulator.
Product Description
The Type 1190 low-pressure gas blanketing regulator
is a pilot-operated, pressure reducing regulator with
a supply pressure regulator. This regulator is used
for extremely accurate pressure control on very
low-pressure gas blanketing systems. This regulator
helps to control emissions and provides protection
against any contamination from atmospheric
conditions by providing a ushing action.
The Type 1190 gas blanketing regulator maintains a
positive vessel pressure thereby reducing the possibility
of vessel wall collapse during pump-out operations.
Figure 1. Type 1190 Low-Pressure Gas Blanketing Regulator

2
Type 1190
Specications
Specications for a given regulator as it originally comes from the factory are stamped on nameplates located on
the actuator and main valve body, while the pilot outlet pressure range appears on the pilot spring case nameplate.
BODY SIZE END CONNECTION STYLE
NPS DN Cast Iron WCC Steel or
CF8M Stainless Steel
1, 2 25, 50 NPT, CL125 FF or
CL250 RF anged
NPT, SWE, BWE, CL150 RF,
CL300 RF, CL600 RF or
PN 16/25/40 anged
3, 4, 6 80, 100,
150
CL125 FF or
CL250 RF anged
BWE, CL150 RF, CL300 RF,
CL600 RF or PN 16 anged
8 x 6,
12 x 6
200 x 150,
300 x 150 - - - - BWE, CL150 RF, CL300 RF, CL600 RF or PN 25 anged
BODY SIZE ORIFICE
DIAMETER
TRAVEL
Standard Restricted Capacity
Percent Travel
NPS DN In. mm In. mm In. mm
1 25 1-5/16 33 3/4 19 - - - - - - - - - - - -
2 50 2-3/8 60 1-1/8 29 30 3/8 9.5
70 5/8 16
3 80 3-3/8 86 1-1/2 38 40 7/8 22
4 100 4-3/8 111 2 51 40 1 25
6, 8 x 6,
12 x 6
150, 200 x 150,
300 x 150 7-3/16 183 2 51 40 1 25
Body Size(1)
Maximum Main Valve Inlet Pressures(2)
400 psig / 27.6 bar
Maximum Operating Inlet Pressures(2)
200 psig / 13.8 bar with Cast iron construction
or 300 psig / 20.7 bar with a Steel or Stainless
steel construction
Maximum Outlet (Casing) Pressure(2)
Steel or Stainless steel: 75 psig / 5.2 bar
Maximum Operating Outlet Pressure to Avoid
Internal Parts Damage(2)
Nitrile (NBR) or Fluorocarbon (FKM)
Diaphragm: 75 psig / 5.2 bar
Outlet Pressure Ranges (Type T205P Pilot)(2)
See Table 1
Flow Coe󰀩cients for Relief Valve Sizing
See Table 2
Maximum and Minimum Di󰀨erential Pressures
See Table 3
Supply Pressure Settings Required for the
Type MR95H Supply Pressure Regulator
See Table 4
Type EGR Main Valve Orice Diameters and Travels
Pressure Registration
External
Main Valve Flow Characteristic
Linear
Main Valve Temperature Capabilities(2)(3)
Nitrile (NBR): -20 to 180°F / -29 to 82°C
Fluorinated Ethylene Propylene (FEP):
-20 to 180°F / -29 to 82°C
Fluorocarbon (FKM): 40 to 300°F / 4 to 149°C
Ethylenepropylene (EPDM):
-20 to 275°F / -29 to 135°C
Peruoroelastomer (FFKM):
-20 to 300°F / -29 to 149°C
Pilot Temperature Capabilities(3)
Nitrile (NBR): -20 to 180°F / -29 to 82°C
Fluorocarbon (FKM): 40 to 180°F / 4 to 82°C
Approximate Weights
NPS 1 / DN 25: 85 lbs / 39 kg
NPS 2 / DN 50: 100 lbs / 45 kg
NPS 3 / DN 80: 145 lbs / 66 kg
NPS 4 / DN 100: 195 lbs / 88 kg
NPS 6 / DN 150: 380 lbs / 172 kg
NPS 8 x 6 / DN 200 x 150: 740 lbs / 336 kg
NPS 12 x 6 / DN 300 x 150: 1265 lbs / 574 kg
1. End connections for other than U.S. standard can usually be provided; consult your local Sales O󰀩ce.
2. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
3. Special low temperature constructions for process temperatures between -76 to 180°F / -60 to 82°C are available by request. The low temperature construction passed Emerson
laboratory testing for lockup and external leakage down to -76°F / -60°C.
Table 1. Outlet Pressure Ranges (Type T205P Pilot)
OUTLET PRESSURE RANGE(1) SPRING
PART NUMBER
SPRING
COLOR
SPRING WIRE DIAMETER SPRING FREE LENGTH
In. w.c. mbar In. mm In. mm
0.25 to 2.5(2)
2 to 7(2)
5 to 16
0.6 to 6(2)
5.0 to 17(2)
12 to 40
1B558527052
1B653827052
1B653927022
Orange
Red
Unpainted
0.072
0.085
0.105
1.83
2.16
2.67
3.25
3.63
3.75
82.6
92.1
95.3
0.5 to 1.2 psig
1.1 to 2.5 psig
2.5 to 4.5 psig
4.5 to 7.0 psig
34 to 83
76 to 172
172 mbar to 0.31 bar
0.31 to 0.48 bar
1B537027052
1B537127022
1B537227022
1B537327052
Yellow
Green
Light blue
Black
0.114
0.156
0.187
0.218
2.90
3.96
4.75
5.54
4.31
4.06
3.94
3.98
109
103
100
101
1. Outlet pressure ranges based on pilot being installed with the spring case pointed down.
2. Do not use Fluorocarbon (FKM) diaphragm with this spring at diaphragm temperatures lower than 60°F / 16°C.

B2328_3
3
Type 1190
Principle of Operation
The Type 1190 gas blanketing regulator reduces
a high-pressure inert gas to maintain a positive
low-pressure gas blanket over a stored liquid
while liquid is being pumped out of the tank. Also,
when the tank suddenly cools causing tank vapors
to condense, the Type 1190 regulator replaces the
condensing vapors with an inert gas to prevent
the internal tank pressure from decreasing. In both
cases, a positive tank pressure prevents outside air
from entering the vessel preventing contamination
and reducing the possibility of atmospheric pressure
collapsing the vessel.
The Type 1190 regulator is pilot-operated to respond to
slight decreases in internal tank pressure by throttling
open to increase the ow rate of inert gas into the vessel.
When the vessel’s liquid level has been lowered to the
desired point and the vapor pressure re-established, the
Type 1190 regulator throttles closed.
The Type 1190 regulator utilizes a Type 1098-EGR
main valve actuator (Type EGR main valve and
Type 1098 actuator), a Type T205P sensing pilot and a
Type MR95H supply pressure regulator. The Type T205P
pilot uses the high-pressure inlet gas, reduced by the
Type MR95H supply pressure regulator, as loading
pressure to operate the Type 1098-EGR main valve
actuator. The outlet or vessel pressure is sensed through
a control line on the Type 1098-EGR main valve actuator
and also on the Type T205P pilot diaphragm.
When the liquid level is decreased and vessel
pressure decreases below the pilot outlet pressure
setting, the spring force on the pilot diaphragm
opens the pilot valve plug, allowing additional loading
pressure on the main valve actuator diaphragm. The
loading pressure opens the main valve plug to supply
the required ow of gas to the vessel.
When downstream demand has been satised, outlet
pressure tends to increase slightly, acting on the pilot
and main valve diaphragms. When the outlet pressure
exceeds the pilot outlet pressure setting, the pilot
diaphragm moves to close the pilot valve plug. The
loading pressure reduces by exhausting downstream
through the xed restriction, allowing the Type EGR
main valve spring to close the Type EGR main valve
plug. The combination of Type EGR main valve spring
force and Type EGR main valve plug unbalance
provides positive shuto󰀨 of the valve plug.
Figure 2. Type 1190 Low-Pressure Gas Blanketing Regulator Operational Schematic
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
PILOT SUPPLY PRESSURE
ATMOSPHERIC PRESSURE
GAS BLANKETING
PRESSURE
DOWNSTREAM
BLEED LINE
FIXED
RESTRICTION
SETPOINT
ADJUSTMENT
TYPE 1098
ACTUATOR
TYPE T205P PILOT
TYPE MR95H
SUPPLY
REGULATOR
TYPE EGR
MAIN VALVE
CONTROL LINE

4
Type 1190
Table 2. Flow Coecients
BODY SIZE
PIPING STYLE
Line Size Equals Body Size Piping
Linear Cage Drilled Hole Whisper Trim™ Cage
CgCvC1
CgCvC1
NPS DN Regulating Wide-Open Regulating Wide-Open Regulating Wide-Open Regulating Wide-Open
1 25 600 632 16.8 17.7 35.7 576 607 16.7 17.6 34.5
2 50 2280 2400 63.3 66.7 36.0 1970 2080 54.7 57.8 36.0
3 80 4630 4880 132 139 35.1 3760 3960 107 113 35.0
4 100 7320 7710 202 213 36.2 6280 6610 180 190 34.8
6 150 12,900 13,600 397 418 32.5 9450 9950 295 310 32.0
8 x 6 200 x 150 18,480 19,450 578 608 32.0 10,660 11,220 305 321 35.0
12 x 6 300 x 150 21,180 22,290 662 697 32.0 11,050 11,630 316 332 35.0
BODY SIZE
2:1 Line Size to Body Size Piping
Standard Linear Cage Drilled Hole Whisper Trim Cage
CgCvC1
CgCvC1
NPS DN Regulating Wide-Open Regulating Wide-Open Regulating Wide-Open Regulating Wide-Open
1 25 568 598 17.2 18.1 33.0 529 557 15.6 16.4 34.0
2 50 2050 2160 59.6 62.8 34.4 1830 1930 52.3 55.1 35.0
3 80 4410 4650 128 135 34.4 3630 3830 106 110 34.2
4 100 6940 7310 198 209 35.0 6020 6340 171 180 35.2
6 150 12,100 12,800 381 404 31.7 9240 9730 291 306 31.7
8 x 6 200 x 150 17,370 18,280 543 571 32.0 10,020 10,550 286 301 35.0
12 x 6 300 x 150 19,900 20,950 622 655 32.0 10,380 10,930 297 312 35.0
Table 3. Maximum and Minimum Dierential Pressures for Type EGR Main Valve Spring Selection
BODY SIZE TYPE EGR
MAIN VALVE
SPRING PART
NUMBER
SPRING
COLOR
MAXIMUM ALLOWABLE
DIFFERENTIAL PRESSURE
MINIMUM DIFFERENTIAL
PRESSURE REQUIRED
FOR FULL STROKE
NPS DN psig bar psig bar
1 25
14A9687X012 Green 60 4.1 2.5 0.17
14A9680X012 Blue 125 8.6 4 0.28
14A9679X012 Red 300 or body rating limit,
whichever is lower
20.7 or body rating limit,
whichever is lower 5 0.34
2 50
14A6626X012 Green 60 4.1 3 0.21
14A6627X012 Blue 125 8.6 5 0.34
14A6628X012 Red 300 or body rating limit,
whichever is lower
20.7 or body rating limit,
whichever is lower 10 0.69
3 80
14A6629X012 Green 60 4.1 4 0.28
14A6630X012 Blue 125 8.6 6 0.41
14A6631X012 Red 300 or body rating limit,
whichever is lower
20.7 or body rating limit,
whichever is lower 11 0.76
4 100
14A6632X012 Green 60 4.1 5 0.34
14A6633X012 Blue 125 8.6 8 0.55
14A6634X012 Red 300 or body rating limit,
whichever is lower
20.7 or body rating limit,
whichever is lower 13 0.90
6,
8 x 6,
12 x 6
150,
200 x 150,
300 x 150
14A9686X012 Green 60 4.1 9.5 0.66
14A9685X012 Blue 125 8.6 14 1.0
15A2615X012 Red 300 or body rating limit,
whichever is lower
20.7 or body rating limit,
whichever is lower 19 1.3

!
WARNING
5
Type 1190
Table 4. Supply Pressure Settings Required for the Type MR95H Regulator
BODY SIZE
TYPE EGR
MAIN VALVE
SPRING
PART NUMBER
AND COLOR
SUPPLY PRESSURE
Type T205P Spring Color and Outlet Pressure Range
Orange
0.25 to
2.5 in. w.c. /
0.6 to 6 mbar
Red
2 to 7 in. w.c. /
5.0 to 17 mbar
Unpainted
5 to
16 in. w.c. /
12 to 40 mbar
Yellow
0.5 to
1.2 psig /
34 to 83 mbar
Green
1.1 to
2.5 psig /
76 to
172 mbar
Light Blue
2.5 to
4.5 psig /
172 mbar to
0.31 bar
Black
4.5 to
7.0 psig /
0.31 to
0.48 bar
NPS DN psig bar psig bar psig bar psig bar psig bar psig bar psig bar
1 25
14A9687X012, Green 6 0.41 6 0.41 6 0.41 7 0.48 8 0.55 11 0.76 13 0.90
14A9680X012, Blue 7 0.48 7 0.48 7 0.48 8 0.55 10 0.69 13 0.90 14 1.0
14A9679X012, Red 8 0.55 8 0.55 8 0.55 9 0.62 11 0.76 14 0.97 15 1.0
2 50
14A6626X012, Green 6 0.41 6 0.41 6 0.41 7 0.48 9 0.62 12 0.83 13 0.90
14A6627X012, Blue 8 0.55 8 0.55 8 0.55 9 0.62 11 0.76 14 0.97 15 1.0
14A6628X012, Red 13 0.90 13 0.90 13 0.90 14 1.0 16 1.1 19 1.3 20 1.4
3 80
14A6629X012, Green 7 0.48 7 0.48 7 0.48 8 0.55 10 0.69 13 0.90 14 1.0
14A6630X012, Blue 9 0.62 9 0.62 9 0.62 10 0.69 12 0.83 15 1.0 16 1.1
14A6631X012, Red 14 1.0 14 1.0 14 1.0 15 1.0 17 1.2 20 1.4 21 1.5
4 100
14A6632X012, Green 8 0.55 8 0.55 8 0.55 9 0.62 11 0.76 14 1.0 15 1.0
14A6633X012, Blue 11 0.76 11 0.76 11 0.76 12 0.83 14 1.0 17 1.2 18 1.3
14A6634X012, Red 16 1.1 16 1.1 16 1.1 17 1.2 19 1.3 22 1.5 23 1.6
6, 8
x 6,
12 x 6
150,
200 x
150,
300 x
150
14A9686X012, Green 13 0.90 13 0.90 13 0.90 14 1.0 15 1.0 18 1.2 20 1.4
14A9685X012, Blue 17 1.2 17 1.2 17 1.2 18 1.2 20 1.4 23 1.6 24 1.7
15A2615X012, Red 22 1.5 22 1.5 22 1.5 23 1.6 25 1.7 28 1.9 29 2.0
1. The pressures shown in the table are the minimum supply pressures required by the pilot. If the inlet pressure is less than shown, an external pilot supply is necessary.
Installation and Startup
Personal injury, equipment damage or
leakage due to escaping accumulated gas
or bursting of pressure-containing parts
may result if this gas blanketing regulator
is overpressured or is installed where
service conditions could exceed the limits
given in the Specications section and
on the appropriate nameplate or where
conditions exceed any ratings of the
adjacent piping or piping connections.
To avoid such injury or damage, provide
pressure-relieving or pressure-limiting
devices (as required by Title 49, Part 192,
of the U.S. Code of Federal Regulations;
by the National Fuel Gas Code Title 54 of
the National Fire Codes of the National
Fire Protection Association; or by other
applicable codes) to prevent service
conditions from exceeding those limits.
Additionally, physical damage to the
gas blanketing regulator could result in
personal injury and property damage due
CAUTION
to escaping accumulated gas. To avoid
such injury and damage, install the gas
blanketing regulator in a safe location.
On the Type EGR main valve, a normal
pressure drop assists shuto󰀨. Therefore,
leakage (backow) may result during any
reverse pressure drop condition.
1. Use qualied personnel when installing, operating
and maintaining regulators.
2. Before installing, inspect the main valve, actuator,
pilot, supply pressure regulator and tubing for any
shipment damage or foreign material that may
have collected during crating and shipment. Make
certain the body interior is clean and the pipelines
are free of foreign material.
3. Apply pipe compound only to the external pipe
threads with a threaded body or use suitable
line gaskets and good bolting practices with a
anged body. Ensure that the spring case of the
Type T205 pilot is pointing down; changing the
orientation of the pilot may a󰀨ect the spring range.

W3012-1
!
WARNING
6
Type 1190
A regulator may vent some gas to
the atmosphere. In hazardous or
ammable gas service, vented gas
may accumulate and cause personal
injury, death or property damage due
to re or explosion. Vent a regulator
in hazardous gas service to a remote,
safe location away from air intakes or
any hazardous location. The vent line
or stack opening must be protected
against condensation or clogging.
4. Install the Type 1190 gas blanketing regulator
as shown in Figure 1 so that ow through the
Type 1098-EGR main valve actuator matches the
ow arrow attached to the valve body.
5. To keep the pilot and supply spring case vent
assembly from plugging or the spring case from
collecting moisture, corrosive chemicals or other
foreign material, point the vent down or otherwise
protect it.
6. For proper operation, install the Type T205P pilot
with the spring case barrel pointed down as shown
in Figure 1.
7. To remotely vent a Type T205P, remove the vent
assembly (key 26, Figure 8) and install tubing or
piping into the 1/4 NPT vent tapping. Vent tubing
or piping should be as short and direct as possible
with a minimum number of bends and elbows. The
remote vent line should have the largest practical
diameter. Provide protection on a remote vent by
installing a screened vent cap into the end of the
vent pipe.
8. Attach a 3/4 NPT downstream pressure control
line to the tank using a straight run of pipe. Connect
the other end of the control line to the Type 1098
actuator bonnet connection (see Figure 2).
Prestartup Considerations
Before beginning the startup procedure in this section,
make sure the following conditions are in e󰀨ect:
• Block valves isolate the regulator
• Hand valves are closed
• Gauges may be installed (if required) in place of
pipe plugs (key 52, Figure 10)
Slowly open the upstream block valve introducing
pressure into the Type 1190 gas blanketing regulator.
Slowly open the downstream block valve. The
regulator will immediately begin to operate. Monitor the
blanket pressure to ensure correct operation.
Note
The Type 1190 regulator was preset at
the factory at the customer’s specied
pressure or the mid-range of the
Type T205P pilot. The outlet pressure
range of the Type T205P pilot is stamped
on the spring case nameplate. For
proper operation, the Type MR95H is
factory set to the values in Table 4.
The only adjustment necessary on a Type 1190
regulator is the pilot control spring pressure setpoint.
Turning the adjusting screw of the Type T205P pilot
clockwise into the spring case increases the spring
compression and pressure setting. Turning the
adjusting screw counterclockwise decreases the
spring compression and pressure setting.
Shutdown
Installation arrangements vary, but in any installation
it is important to open and close valves slowly and
to close the upstream block valve rst when shutting
down the system.
Figure 3. Trim Package Removal
CAGE SCREWS INTO
BODY FLANGE
BODY FLANGE
SEAT RING SCREWS
INTO CAGE

W3116
!
WARNING
7
Type 1190
Maintenance
Regulator parts are subject to normal wear and
must be inspected and replaced as necessary. The
frequency of inspection and replacement of parts
depends upon the severity of the service conditions
or the requirements of local, state and federal
regulations. Due to the care Emerson takes in
meeting all manufacturing requirements (heat treating,
dimensional tolerances, etc.), use only replacement
parts manufactured or furnished by Emerson.
Lubrication
The stem O-rings on the Type 1098 actuator should be
lubricated, using the grease tting (key 28, Figure 7)
as part of a preventive maintenance program. Line
pressure leakage or unexpected grease extrusion
from the actuator vent (key 27, Figure 7) during normal
operation indicates stem O-ring damage. All O-rings,
gaskets and seals should be lubricated with a good
grade of general-purpose grease and installed gently
rather than forced into position. Be certain that the
nameplates are updated to accurately indicate any eld
changes in equipment, materials, service conditions or
pressure settings.
To avoid personal injury resulting from
sudden release of pressure, isolate
the pilot, supply and main regulators
from all pressure and cautiously
release trapped pressure from the pilot
regulator, Types MR95H and 1098-EGR
regulator before attempting disassembly.
Type EGR Main Valve
Replacing Quick-Change Trim Package
Perform this procedure if replacing the entire trim package
(Figure 3). Key numbers for both the complete main valve
and its trim package are referenced in Figure 6.
Note
All disassembly, trim change and
reassembly steps in this section can be
performed with the Type EGR main valve
in the pipeline.
1. Disconnect the supply pressure tubing from the
top of the Type 1098-EGR main valve actuator.
Remove the cap screws or stud bolts (key 3). Pry
the body ange (key 2) loose from the valve body
(key 1) and lift out the trim package (Figure 3).
2. Perform any required inspection, cleaning or
maintenance on the exposed surfaces of the valve
body or trim package. Replace the gasket (key 4)
and cage O-ring (key 17) as necessary.
3. On a pre-built replacement trim package, check
indicator zeroing by unscrewing the indicator
protector (key 19) and seeing if the ange of the
ange nut (key 22) lines up evenly with the bottom
marking on the indicator scale (key 18). If not,
remove the indicator scale and separate the ange
nut and hex nut (key 8). Hold the indicator scale
against the indicator tting (key 5) with the scale
base resting against the shoulder of the tting
and turn the indicator nut to align its ange with
the bottom scale marking. Then lock both nuts
against each other and install the indicator scale
and protector.
4. Lightly coat the cage seating surfaces of the valve
body web and the body ange seating surfaces of
the valve body neck with a good grade of general
purpose grease. Install the trim package and
secure it evenly with the cap screws or stud bolts.
No particular trim package orientation in the body
is required.
Figure 4. Exploded View of Full-Capacity Trim
Package Assembly
SEAT RING (KEY 13)
CAGE O-RING (KEY 17)
CAGE (KEY 11)
VALVE PLUG (KEY 16)
BODY FLANGE (KEY 2)
SPRING SEAT (KEY 28)
INDICATOR STEM (KEY 10)
SPRING (KEY 9)
INDICATOR FITTING
O-RING (KEY 21)
INDICATOR FITTING (KEY 5)
HEX NUT (KEY 8)
INDICATOR SCALE (KEY 18)
PORT SEAL (KEY 12)
UPPER SEAL (KEY 15)
PIPE PLUG (KEY 31)
E-RING (KEY 23)
STEM O-RING (KEY 7)
O-RING RETAINER (KEY 6)
FLANGE NUT (KEY 22)
INDICATOR PROTECTOR (KEY 19)

W2772-1
8
Type 1190
5. Remove the pipe plug (key 31) from the Type EGR
main valve body ange (key 2) and reconnect the
Type MR95H supply pressure tubing and ttings
as shown in Figure 10.
Replacing Trim Parts
Perform this procedure if inspecting, cleaning or
replacing individual parts in a trim package. Key
numbers are referenced in Figure 6. An exploded view
of a standard full-capacity trim package only is shown
in Figure 4.
Note
Access to the spring (key 9), indicator
tting O-ring (key 21) or travel indicator
parts in step 1 can be gained without
removing the body ange (key 2).
1. Remove the indicator tting (key 5) and attached
parts. Disconnect the supply pressure tubing
and ttings from the top of the Type 1098-EGR
main valve. Proceed to step 5 if only performing
maintenance on the tting or attached parts.
2. Remove the cap screws or stud bolts (key 3) and
pry the body ange (key 2) loose from the valve
body (key 1).
3. Use the valve body as a holding xture if desired.
Flip the body ange over and anchor it on the
valve body as shown in Figure 5.
4. To gain access to the port seal (key 12), upper
seal (key 15) or valve plug parts, unscrew the seat
ring (key 13) from the cage (key 11) and the cage
from the body ange (key 2). For leverage, insert a
wrench handle or similar tool into the seat ring slots
(Figure 5) and wrap a strap wrench around
a cage or insert a soft bar through the windows
of the cage. Note that the piston ring (key 14)
and the plug O-ring (key 20) are omitted from the
valve plug (key 16). Proceed to step 6 if no further
maintenance is necessary.
5. To replace the body ange (key 2) or gain access
to the spring (key 9), indicator stem (key 10),
stem O-ring (key 7), spring seat (key 28) or
E-ring (key 23), remove the indicator protector
(key 19) and indicator scale (key 18). Since some
compression is left in the spring, carefully remove
the ange nut (key 22) and hex nut (key 8). Insert
a screwdriver through the O-ring retainer (key 6)
to remove the stem O-ring without removing the
retainer. If necessary, unclip the E-ring from the
indicator stem.
6. Replace and lubricate parts, such as the gasket
(key 4) and cage O-ring (key 17), as necessary.
If the port seal (key 12) and upper seal (key 15)
were removed, install them in their retaining slots
with the grooved sides facing out. Also for ease
of installation, lubricate any other surfaces as
necessary. No further main valve maintenance is
necessary if only the indicator tting and attached
parts were removed.
7. Insert the valve plug (key 16) into the body ange
(key 2), install the cage (key 11) plus upper seal
(key 15) and O-ring (key 17) into the body ange,
and then install the seat ring (key 13) plus port
seal (key 12) into the cage. Use the valve body
as a holding xture during this step as shown in
Figure 5, and insert a wrench handle or similar
tool into the seat ring slots for leverage when
tightening the seat ring (key 13) and cage.
8. Remove the upsidedown body ange (key 2) if it
was anchored on the body (key 1). Lightly coat the
cage seating surfaces of the valve body web and
the body ange seating surfaces of the valve body
neck with a good grade of general-purpose grease.
Install the body ange on the body and secure it
evenly with the cap screws or stud bolts (key 3).
9. Install the indicator tting O-ring (key 21), stem
O-ring (key 7) and O-ring retainer (key 6) in the
indicator tting (key 5). Orient the spring seat
(key 28) as shown in Figure 6 and attach it with
the E-ring (key 23) to the slotted end of the
indicator stem (key 10). Then install the
spring (key 9).
10. Being careful not to cut the stem O-ring (key 7) with
the stem threads, place the indicator tting (key 5)
over the indicator stem (key 10) until resting on the
spring (key 9). Install the hex nut (key 8) and then
the anged indicator nut (key 22) on the indicator
Figure 5. Seat Ring/Cage Removal or Installation
Using Body as Holding Fixture

!
9
Type 1190
WARNING
stem, pushing on the tting if necessary to provide
su󰀩cient stem thread exposure. To maintain
clearance for indicator part installation, draw up the
spring seat (key 28) by turning the hex nut down on
the stem until the threads bottom.
11. Install the indicator tting (key 5) with attached parts
into the body ange (key 2). Back o󰀨 the hex nut
(key 8) until the spring (key 9) completely closes the
valve plug (key 16) against the port seal (key 12) and
upper seal (key 15), as indicated by stem threads
showing between this nut and the tting.
12. Hold the indicator scale (key 18) against the
tting with the scale base resting against the
shoulder of the tting and turn the anged
indicator nut (key 22) until its ange is aligned
with the bottom scale marking. Then lock both
nuts against each other, and install the indicator
scale and protector (key 19).
Type T205P Pilot
Key numbers are referenced in Figure 8.
To avoid personal injury resulting from
sudden release of pressure, isolate the
pilot from all pressure and cautiously
release trapped pressure from the
pilot, supply and main regulator before
attempting disassembly.
Body Area
This procedure is for gaining access to the disk
assembly, orice and body seal O-ring.
1. Remove the two cap screws (key 2) and separate
the lower casing assembly (key 4) from the body
(key 1).
2. Remove and inspect the body seal O-ring (key 11)
and the backup ring (key 49).
3. Inspect and replace the orice (key 5) if necessary.
Protect the orice seating surface during disassembly
and assembly. Sparingly lubricate the threads of the
orice with a good grade of grease and install with
340 to 470 in-lbs / 38.5 to 53.1 N•m of torque.
4. To replace the disk assembly (key 13) or the throat
seal O-ring (key 31), remove the cotter pin (key 15).
5. To inspect the throat seal O-ring (key 31), remove
the machine screw (key 34). Replace if necessary
and reassemble.
6. Install the disk assembly (key 13) and secure it with
the cotter pin (key 15).
7. Place the backup ring (key 49) into the body
(key 1). Then place the body seal O-ring (key 11)
into the body.
8. Place the lower casing assembly (key 4) on the
body (key 1) and secure it with the cap screws
(key 2).
Diaphragm and Spring Case Area
This procedure is for gaining access to the spring,
diaphragm, lever assembly and stem.
To Change the Control Spring:
For internal at circular adjusting screw:
1. Remove the adjusting screw (key 35).
2. Take out the control spring and replace with the
desired spring.
3. Reinstall the adjusting screw.
4. Adjust the outlet pressure to the desired control
pressure setting. Use a 1 in. / 25 mm hex rod
or at screwdriver to turn the adjusting screw
(key 35) either clockwise to increase outlet
pressure or counterclockwise to decrease outlet
pressure. The regulator will go into immediate
operation. To ensure correct operation, always use
a pressure gauge to monitor the tank blanketing
pressure when making adjustments.
5. After making the adjustment, replace the closing cap
gasket (key 25) and install the closing cap (key 22).
Change the stamped spring range on the nameplate.
For external square head adjusting screw:
1. Remove the adjusting screw (key 35) and locknut
(key 20).
2. Remove the closing cap (key 22), closing cap
gasket (key 25) and upper spring seat (key 19).
3. Take out the control spring and replace with the
desired spring.
4. Reinstall the upper spring seat, closing cap
gasket, closing cap, locknut and adjusting screw.
5. Adjust the outlet pressure to the desired control
pressure setting. Turn the adjusting screw
(key 35) either clockwise to increase outlet
pressure or counterclockwise to decrease outlet
pressure. Always use pressure gauge to monitor
the tank blanketing gas pressure when making
adjustments. After making the adjustment, tighten
the locknut (key 20).
6. Change the stamped spring range on the nameplate.

!
10
Type 1190
WARNING
12. Install the spring case assembly (key 3) on the lower
casing assembly (key 4) so that the vent assembly
(key 26) is correctly oriented. Secure the spring
case assembly with the cap screws (key 24) and
hex nuts (key 23, not shown) nger tight.
13. Insert the spring (key 6) into the spring case
assembly (key 3), followed by the adjusting screw
(key 35).
14. Turn the adjusting screw (key 35) clockwise until
there is enough spring force to provide proper slack
to the diaphragm (key 10). Use crisscross pattern
to tighten the cap screws (key 24) and hex nuts
(key 23, not shown) with 192 to 228 in-lbs / 21.7 to
25.8 N•m of torque.
15. Install a replacement closing cap gasket (key 25) if
necessary, and then install the closing cap
(key 22).
Type MR95H Supply Pressure Regulator
This section includes instructions for disassembly and
assembly of replacement parts. All key numbers refer
to Figure 9.
To avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure and
cautiously release trapped pressure
from the main valve, pilot and supply
regulator before attempting disassembly.
1. Unscrew the valve plug guide (key 5) from the
body (key 1). The inner valve spring (key 26) and
the valve plug (key 4) will normally come out of the
body along with the valve plug guide.
2. Inspect the seating surface of the valve plug
(key 4), being sure that the composition surface
(or polished steel surface) of the valve plug is not
damaged. Replace if damaged.
3. Inspect the seating edge of the orice (key 3).
If damaged, unscrew the orice from the body
(key 1) and replace it with a new part. If no further
maintenance is required, reassemble the regulator
in the reverse of the above steps. When installing
the valve plug guide (key 5), coat the threads and
sealing surface with sealant to ensure an adequate
metal-to-metal seal.
4. To inspect the diaphragm (key 12) or other internal
parts, loosen the lock nut (key 17) and turn the adjusting
screw (key 15) counterclockwise to remove all
spring compression.
To Disassemble and Reassemble Diaphragm Parts:
1. For internal at circular adjusting screw –
remove the closing cap (key 22) and closing cap
gasket (key 25).
For external square head adjusting screw –
loosen the locknut (key 20).
2. Turn the adjusting screw (key 35)
counterclockwise to remove all the compression
from the control spring (key 6).
3. Remove the eight spring case hex nuts (key 23),
eight cap screws (key 24) and spring case
assembly (key 3).
4. Remove the diaphragm (key 10) and attached
parts by tilting them so that the pusher post (key 8)
slips o󰀨 the lever assembly (key 16). To separate
the diaphragm from the attached parts, unscrew
the machine screw (key 38) from the pusher post.
5. Inspect the pusher post (key 8) and the connector
seal O-ring (key 50), replace if required.
6. To replace the lever assembly (key 16), remove the
machine screws (key 17). To replace the stem
(key 14), perform Body Area Maintenance steps 1
and 4 and pull the stem out of the guide insert
(key 18).
7. Install the stem (key 14) into the guide insert
(key 18) and then perform Body Area Maintenance
steps 6 through 8 as necessary.
8. Install the lever assembly (key 16) into the stem
(key 14) and secure the lever assembly with the
machine screws (key 17) using 14 to 19 in-lbs /
1.6 to 2.1 N•m of torque.
9. Install the parts on the pusher post in the order
listed below:
• Diaphragm head gasket (key 45)
• Lower diaphragm head (key 33)
• Diaphragm (key 10)
• Upper diaphragm head (key 7)
• Lower spring seat (key 50)
• Washer (key 36)
10. Insert and tighten the cap screw (key 38) with a
torque of 120 to 144 in-lbs / 13.6 to 16.3 N•m to
secure the diaphragm parts to the pusher post
(key 8).
11. Install the assembled parts into the lower
diaphragm casing assembly (key 4). Make sure
that the lever assembly (key 16) ts in the pusher
post (key 8) and the holes in the diaphragm
(key 10) align with the holes in the diaphragm
casing assembly.