Instruction Manual
Form 5308
November 2015
Type 1290 Vapor Recovery Regulator
WARNING
!
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® vapor recovery valves 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 a leak develops or if the outlet
continually vents gas, service to the
unit may be required. Failure to correct
trouble could result in a hazardous
condition. Only a qualied person must
install or service the unit.
Installation, operation and maintenance
procedures performed by unqualied
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Use qualied
personnel when installing, operating
and maintaining the Type 1290 Vapor
Recovery Valve.
complete with a Type EGR main valve, a Type T208P
or T208PL pilot and a Type MR95H supply pressure
regulator. Detailed instructions for installation,
adjustment and maintenance of other equipment used
with this regulator are found in separate manuals.
Product Description
Figure 1. Type 1290 Vapor Recovery Regulator
Type 1290
Introduction
Scope of the Manual
This manual provides installation, adjustment and
maintenance procedures and also parts ordering
information for Type 1290 Vapor Recovery regulator
The Type 1290 vapor recovery regulator is a selfcontained, pilot-operated regulator system used for
vapor recovery of blanketing gas. When blanketing gas
pressure inside the vessel rises due to thermal heating
or pump-in operations, the Type 1290 regulator senses
an increase in vessel pressure and vents excessive
internal tank pressure to a vapor recovery storage tank.
D101645X012
www.fisherregulators.com
Type 1290
Specications
This section lists the specications for the Type 1290 vapor recovery regulator. Specications for a given regulator as it
originally comes from the factory are stamped on the regulator nameplate located on the actuator, while the pilot control
spring range appears on the pilot spring case nameplate.
Body Sizes and End Connection Styles
BODY SIZE,
NPS / DN
1 or 2 /
25 or 50
3, 4 or 6 /
80, 100 or 150
8 x 6 or 12 x 6 /
200 x 150 or 300 x 150
Maximum Inlet Pressure
TYPE EGR MAIN VALVE END CONNECTION STYLE
Cast Iron
NPT, CL125 FF or
CL250 RF anged
CL125 FF or
CL250 RF anged
- - - -
(2)
NPT, SWE, BWE, CL150 RF,
BWE, CL150 RF, CL300 RF,
CL600 RF or PN 25 anged
Type T208P Pilot Constructions: 20 psig / 1.4 bar
Type EGR Main Valve: See Table 2
For Fluorinated Ethylene Propylene (FEP)
Diaphragm: 10 psig / 0.69 bar
Maximum Differential Pressure
(2)
35 psi / 2.4 bar
Control Pressure Ranges (Type T208P or
T208PL Pilot)
(2)
See Table 1
Type MR95H Supply Pressure Settings
TYPE EGR MAIN VALVE WITH
PILOT
TYPE
T208PL 8 psig / 0.55 bar 13 psig / 0.90 bar Black
T208P
GREEN SPRING, NPS / DN
1, 2, 3 or 4 /
25, 50, 80 or 100
8 psig / 0.55 bar
8 psig / 0.55 bar
9 psig / 0.62 bar
10 psig / 0.69 bar
11 psig / 0.76 bar
14 psig / 0.97 bar
15 psig / 1.0 bar
6 or 8 x 6 /
150 or 200 x 150
13 psig / 0.90 bar
13 psig / 0.90 bar
14 psig / 0.97 bar
14 psig / 0.97 bar
15 psig / 1.0 bar
18 psig / 1.2 bar
20 psig / 1.4 bar
(1)
WCC Steel or
CF8M Stainless steel
CL300 RF, CL600 RF or
PN 16/25/40 anged
BWE, CL150 RF,
CL300 RF, CL600 RF or
PN 16 anged
SPRING
COLOR
Orange
Red
Olive Green
Yellow
Light green
Light Blue
Black
Exhaust Line Connection
3/4 NPT
Supply Pressure and Spring Case Connections
1/4 NPT
Port Diameters and Travels
BODY SIZE,
NPS / DN
1 / 25
2 / 50
3 / 80
4 / 100
6 / 150
8 x 6 / 200 x 150
12 x 6 / 300 x 150
Main Valve Temperature Capabilities
Nitrile (NBR):
-20 to 180°F / -29 to 82°C
Fluorocarbon (FKM):
For In. w.c. Setpoints:
40 to 300°F / 4 to 149°C
For psig Setpoints:
0 to 300°F / -18 to 149°C
Ethylenepropylene (EPDM):
-20 to 275°F / -29 to 135°C
Peruoroelastomer (FFKM):
-20 to 300°F / -29 to 149°C
Pilot Temperature Capabilities
See Table 4
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
Type T208P or T208PL Pilot Orice Diameter
3/8 in. / 9.5 mm
Control Line Connection
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
1/2 NPT
1. End connections for other than U.S. standards can usually be provided. Consult your local Sales Ofce.
2. Pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
PORT DIAMETER,
In. / mm
1-5/16 / 33
2-3/8 / 60
3-3/8 / 86
4-3/8 / 111
7-3/16 / 183
7-3/16 / 183
7-3/16 / 183
TRAVEL,
In. / mm
3/4 / 19
1-1/8 / 29
1-1/2 / 38
2 / 51
2 / 51
2 / 51
2 / 51
(2)
PILOT
TYPE
T208PL 0.5 to 1.5 in. w.c. / 1 to 4 mbar
T208P
1. Spring 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.
3. When using a Fluorocarbon (FKM) diaphragm, the minimum outlet pressure is 2 in. w.c. / 5 mbar.
4. When using a Fluorocarbon (FKM) diaphragm, the minimum outlet pressure is 2.5 in. w.c. / 6 mbar.
CONTROL PRESSURE RANGE
1 to 2.5 in. w.c. / 2 to 6 mbar
2 to 7 in. w.c. / 5 to 17 mbar
5 to 16 in. w.c. / 12 to 40 mbar
0.5 to 1.2 psig / 35 to 83 mbar
1.0 to 2.5 psig / 0.07 to 0.17 bar
2.5 to 4.5 psig / 0.17 to 0.31 bar
4.5 to 7 psig / 0.31 to 0.48 bar
(2)(4)
(1)
(2)
(2)(3)
2
Table 1. Control Pressure Ranges
SPRING
COLOR
Black 1B413627222 0.25 in. w.c. / 0.60 mbar 0.075 / 1.90 2.25 / 57.2
Orange
Red
Olive Green
Yellow
Light Green
Light blue
Black
SPRING PART
NUMBER
1B558527052
1B653827052
1B653927022
1B537027052
1B537127022
1B537227022
1B537327052
BUILDUP TO WIDE-OPEN
(TYPE EGR MAIN VALVE)
0.25 in. w.c. / 0.60 mbar
0.25 in. w.c. / 0.60 mbar
0.25 in. w.c. / 0.60 mbar
0.05 psig / 3.40 mbar
0.10 psig / 6.90 mbar
0.15 psig / 10.0 mbar
0.20 psig / 14.0 mbar
SPRING WIRE DIAMETER,
In. / mm
0.072 / 1.83
0.085 / 2.16
0.105 / 2.67
0.114 / 2.90
0.156 / 3.96
0.187 / 4.75
0.218 / 5.54
SPRING FREE
LENGTH, In. / mm
3.25 / 83
3.62 / 92.0
3.75 / 95.2
4.31 / 109
4.06 / 103
3.94 / 100
3.98 / 101
TYPE EGR
MAIN VALVE
Type 1290
E0063
ATMOSPHERIC PRESSURE
LOADING PRESSURE
INTERMEDIATE PRESSURE
VACUUM PRESSURE
TANK PRESSURE
E
VAPOR PRESSURE
TANK
A
CONTROL LINE
TYPE T208P PILOT
D
SETPOINT
EXHAUST LINE
ADJUSTMENT
Figure 2. Operational Schematic
TYPE 1098
ACTUATOR
B
C
TYPE M95H SUPPLY
REGULATOR
VAPOR RECOVERY
VACUUM SOURCE
FIXED
RESTRICTION
Table 2. Maximum Inlet Pressures (Type EGR Main Valve)
MAXIMUM INLET PRESSURE
Type EGR Main Valve with Green Spring
PILOT TYPE
T208PL 5.5 0.38 5.0 0.35 4.0 0.28 3.0 0.21 3.5 0.24 Black
T208P
1. For Fluorinated Ethylene Propylene (FEP) Pilot Diaphragm, the maximum inlet pressure is 10 psig / 0.69 bar.
NPS 1 / DN 25 NPS 2 / DN 50 NPS 3 / DN 80 NPS 4 / DN 100
psig bar psig bar psig bar psig bar psig bar
5.5 0.38 5.0 0.35 4.0 0.28 3.0 0.21 3.5 0.24 Orange
5.5 0.38 5.0 0.35 4.0 0.28 3.0 0.21 3.5 0.24 Red
6.5 0.45 6.0 0.41 5.0 0.35 4.0 0.28 4.5 0.31 Olive Green
7.5 0.52 7.0 0.48 6.0 0.41 5.0 0.35 4.5 0.31 Yellow
8.5 0.59 8.0 0.55 7.0 0.48 6.0 0.41 5.5 0.38 Light Green
11.5
12.5
(1)
(1)
0.79
0.86
(1)
(1)
11.0
12.0
(1)
(1)
0.76
0.83
(1)
10.0 0.69 9.0 0.62 8.5 0.59 Light Blue
(1)
11.0
(1)
0.76
(1)
10.0 0.69 10.5
Principle of Operation
NPS 6, 8 x 6 or
12 x 6 / DN 150,
200 x 150 or 300 x 150
(1)
0.72
(1)
CAUTION
The Type 1290 vapor recovery regulator serves as
a vessel vapor recovery system. The Type 1290
regulator controls vessel blanketing gas pressure
when the vessel is being lled with uid or when
ambient temperature causes the vapor gas to expand.
The system monitors the increasing blanket pressure
and throttles open to pass excess blanketing gas into
a vapor recovery system thus controlling the desired
set pressure of the vessel.
The Type 1290 is used as part of the
gas blanketing system to control the
outow of blanketing gas under normal
conditions and to collect vessel vapors
for the vapor recovery system. It is not
an ASME safety relief device. You should
provide alternate methods of emergency
overpressure protection.
SPRING COLOR
Black
3
Type 1290
The Type 1290 vapor recovery regulator responds to
any changes in the blanket gas pressure and throttles
open or close to control the ow of the blanket gas out
of the vessel. A vacuum source on the outlet of the
regulator is necessary to ensure ow of low-pressure
blanket gas out of the vessel and into a vapor recovery
system. The higher the vacuum source, the more the
ow capacity of the vapor recovery regulator.
The pressure of the blanket gas registers under the
diaphragm of the pilot. A Type MR95H regulator provides
a constant loading pressure source to the Type EGR
main valve actuator. When the pilot is closed, the loading
pressure lls both sides of the Type 1098 actuator through
a xed restriction.
The Type EGR main valve spring keeps the main
valve plug tightly shut. When the vessel blanket gas
pressure reaches the setting of the pilot spring, the
pilot diaphragm moves, opening the pilot valve disk
and exhausting some of the Type 1098 actuator’s
loading pressure through the pilot orice. This typically
happens when the vessel is being lled with liquid.
The small xed restriction maintains a higher loading
pressure on the bottom of the Type 1098 actuator. The
pressure differential across the main valve diaphragm
moves the diaphragm upward causing the main valve
to open which allows the blanket gas to ow out to
the vapor recovery system vacuum source, hence
controlling the vessel blanket pressure.
When the vessel blanket gas pressure begins to
stabilize, the pilot spring throttles and the pilot disk
closes. This allows the loading pressure source to ll
both sides of the Type 1098 actuator through the xed
restriction. This equalizes the pressure acting on the
diaphragm, thus allowing the main valve spring to close
the main valve plug.
Installation and Startup
WARNING
!
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
vapor recovery regulator system could
result in personal injury and property
damage due to escaping accumulated
gas. To avoid such injury and damage,
install the vapor recovery system in a
safe location.
CAUTION
On the Type EGR main valve, normal
pressure drop assists shutoff, therefore,
leakage may result during any reverse
pressure drop condition.
1. Call qualied personnel when installing, operating and
maintaining regulators.
2. Before installing, inspect the main valve, pilot and
tubing for any shipment damage or foreign material
that may have collected during crating and shipment.
Make certain that 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.
4. The Type 1290 vapor recovery regulator should be
installed as shown in Figure 1 so that ow through the
Type EGR main valve matches the ow arrow attached
to the valve body.
Personal injury, equipment damage or
leakage due to escaping accumulated
gas or bursting of pressure-containing
parts may result if this gas blanketing
system is overpressured or installed
where service conditions could exceed
the limits given in the Specications
section and on the appropriate
nameplate, or where conditions exceed
any ratings of the adjacent piping or
piping connections.
4
WARNING
!
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.
Type 1290
5. To keep the pilot spring case vent from being
plugged 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, the Types T208P pilot and
MR95H supply should be installed with the spring
case barrel pointed down as shown in Figure 1.
However, a Type 1290 with a Type T208PL pilot
must be installed with the pilot spring case barrel
pointed up.
7. To remotely vent a Type T208P or T208PL, remove
the vent (key 26) and install tubing or piping into the
1/4 NPT vent tapping. Vent 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 remote end of the vent pipe.
8. Refer to Figure 2. Attach a 1/2 NPT upstream
pressure control line to the vessel using a straight
run of pipe. Connect the other end of the control line
to the Type T208P or T208PL pilot. Install a 1/2 NPT
exhaust line between the pilot and vessel.
9. Run a supply pressure line (see Figure 2) to the
Type MR95H regulator inlet (use 3/8 in. / 9.5 mm
outer diameter tubing or 1/4 in. / 6.4 mm pipe
minimum). Type MR95H minimum supply pressure
should be 10 psig / 0.69 bar higher than the set
pressure of the Type MR95H regulator.
Pre-startup Considerations
Before beginning the startup procedures in the next
section, make sure the conditions below are followed:
• Block valves isolate the regulator.
• Hand valves are closed.
• Gauges may be installed (if required) in place of
pipe plugs (key 52, Figure 11).
Note
For proper operation, the Type MR95H
supply pressure regulator is factory set to
the values in the Specications section.
2. Open valve ‘D’ (if used). This valve must have a
large port area and be fully open.
3. Open valve ‘E’ (if used). This valve must be a full
ported valve that will not restrict pressure registration.
Note
When opening valve ‘E’ in step 3, the
main valve may go wide-open if the vapor
pressure is higher than the pilot setpoint.
4. Slowly open valve ‘A’, introducing pressure into the
vapor recovery regulator system.
5. Slowly open valve ‘B’. The regulator will go into
immediate operation.
6. The control spring in the Type T208P will be preset
at the factory if setpoint was specied. Otherwise,
the factory setpoint is approximately mid-range of the
spring. The spring range of the pilot is stamped on the
pilot spring case nameplate.
Control spring adjustment may be necessary. To
check the setpoint, raise the vessel pressure while
observing a pressure gauge (manometer) and the
main valve travel indicator to determine whether or
not the setpoint is correct. On a Type T208P, turning
the adjusting screw clockwise into the spring case
increases the pressure setting. On a Type T208PL,
turning the adjusting screw counterclockwise out of the
spring case will increase the pressure setting.
Note
One way to increase the vessel blanketing
pressure temporarily is to manually push
on the blanketing regulator diaphragm.
To push on the diaphragm, remove the
spring case closing cap on the blanketing
regulator (Type T208P or T208PL pilot) and
use a screwdriver or rod to temporarily
push on the diaphragm assembly and
raise the outlet pressure of the blanketing
regulator. Release the manual force on the
diaphragm and the blanketing regulator
will return to its original setpoint.
Shutdown
Startup and Adjustment (Refer to Figure 2)
1. Open valve ‘C’ to supply the energy source. The
Type MR95H supply regulator has been preset at
the factory according to the control spring in the
pilot. If any eld changes have been made, reset the
Type MR95H outlet pressure. See Table 1 for the
correct pressure setting.
Installation arrangements may vary but in any
installation, it is important that the upstream block valve
should be closed rst and that the upstream valves be
opened or closed slowly.
5
Type 1290
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 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 general-purpose grease and installed gently
rather than forced into position. Be certain that the
nameplates are updated to indicate accurately any eld
changes in equipment, materials, service conditions or
pressure settings.
WARNING
!
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 may
be performed with the regulator in the
main line.
1. Remove the cap screws (key 3) on a cast iron
or steel body, or remove the hex nut (key 29, not
shown) on a stainless steel body. 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) or
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 ange
nut until its ange is aligned 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 (key 1) web and the body ange (key 2) 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 (key 3) or hex
nuts (key 29, not shown). No particular trim package
orientation in the body is required.
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. Proceed to step 5 if only performing
maintenance on the tting or attached parts.
2. Remove the cap screws (key 3) on a cast iron
or steel body, or remove the hex nut (key 29, not
shown) on a stainless steel body, and pry the body
ange (key 2) loose from the valve body (key 1).
3. Use the valve body (key 1) as a holding xture
if desired. Flip the body ange (key 2) over, and
anchor it on the valve body as shown in Figure 5,
removing the pipe plug (key 31) rst.
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
6
INDICATOR PROTECTOR (KEY 19)
Type 1290
INDICATOR SCALE (KEY 18)
BODY FLANGE
SEAT RING SCREWS
INTO CAGE
P1507
Figure 3. Trim Package Removal
CAGE SCREWS INTO
BODY FLANGE
slots (Figure 5) and wrap a strap wrench around
a cage, or insert a soft bar through the windows
of the cage. 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 anged 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. As required, replace and lightly lubricate the body
ange gasket (key 4), cage O-ring (key 17), seat
ring port seal (key 12) and the cage upper seal
(key 15). Install the dry port and upper seals in their
retaining slots with the grooved side facing out. After
the dry seals are installed into their retaining slots,
lightly lubricate the exposed portion of the seals and
apply a light coat of lubricant to the cage and seat
ring threads. Also lubricate any other surfaces as
necessary for ease of installation. No further main
valve maintenance is necessary if only the indicator
tting and attached parts were removed.
7. Use the valve body as a holding xture during this
step as shown in Figure 5. Insert the valve plug
(key 16) into the body ange (key 2). Then loosely
screw the cage (key 11) into the body ange and
slowly work the upper seal (key 15) by untightening
and tightening the cage. This will allow the upper
seal to be properly seated. Securely tighten the
cage using a strap wrench wrapped around the
cage. Loosely screw the seat ring (key 13) into
the cage and slowly work the port seal (key 12) by
untightening and tightening the seat ring. This will
FLANGE NUT (KEY 22)
RETAINER (KEY 6)
STEM O-RING (KEY 7)
E-RING (KEY 23)
PIPE PLUG (KEY 31)
UPPER SEAL (KEY 15)
PORT SEAL (KEY 12)
W3116
Figure 4. Exploded View of Full-Capacity Trim
Package Assembly
HEX NUT (KEY 8)
INDICATOR FITTING (KEY 5)
INDICATOR FITTING
O-RING (KEY 21)
SPRING (KEY 9)
INDICATOR STEM (KEY 10)
SPRING SEAT (KEY 28)
BODY FLANGE (KEY 2)
VALVE PLUG (KEY 16)
CAGE (KEY 11)
CAGE O-RING (KEY 17)
SEAT RING (KEY 13)
allow the port seal to be properly seated. After the
port seal is seated, use a wrench or similar tool (see
Figure 5) to tighten the seat ring, then back off the
seat ring about 1/8 in. / 3.2 mm.
8. Remove the upside-down body ange (key 2) if it was
anchored on the body (key 1). Lightly coat the cage
(key 11) 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 (key 3) or stud bolt nuts
(key 3). Install the pipe plug (key 31) in the side
tapping of the ange for proper operation.
9. Make sure that the ange (key 2) and stem O-ring
(key 7) and the retainer (key 6) are installed 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. Be careful not to cut the stem O-ring (key 7) with the
stem threads, install the indicator tting (key 5) down
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 stem,
pushing on the tting if necessary to provide sufcient
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.
7
Type 1290
11. Install the indicator tting (key 5) with attached parts
into the body ange (key 2). Back the hex nut (key 8)
off until the spring (key 9) completely closes the valve
plug (key 16) against the port (key 12) and upper
seals (key 15), as indicated by stem threads showing
between this nut and the tting. Hold the indicator
scale (key 18) against the tting with the scale base
resting against the shoulder of the tting, and turn
the ange 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 T208P or T208PL Pilot
WARNING
!
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 regulators before
attempting disassembly.
Body Area
This procedure is for gaining access to the disk
assembly, orice and body O-ring. All pressure must
be released from the regulator, before the following
steps can be performed. Key numbers are referenced
in Figures 8 and 9.
1. To inspect and replace the disk assembly (key 13)
or orice (key 5), remove the back body cap
(key 43).
2. Remove the disk assembly (key 13) from the disk
spacer (key 44) if it is necessary to replace the
disk assembly.
3. To inspect and replace the orice (key 5) or throat
seal O-ring (key 31), remove the cap screws (key 2)
and separate the diaphragm casing (key 4) from the
body (key 1).
4. Remove and inspect the body seal O-ring (key 11)
and back-up ring (key 49). Replace if necessary.
5. Inspect and replace the orice (key 5) if necessary.
Lubricate the threads of the replacement orice
with a good grade of light grease. Install with
29 to 37 ft-lbs / 39 to 50 N•m of torque.
6. Inspect and replace the throat seal O-ring (key 31)
and the machine screw (key 34).
P1508
Figure 5. Seat Ring/Cage Removal or Installation
Using Body as Holding Fixture
7. Install the back-up ring (key 49) in the body (key 1).
Next, install the body seal O-ring (key 11) into the
body. See the expanded view of the body area in
Figure 8 or 9.
Note
In the following step, be sure to install
the spring case barrel pointed down as
shown in Figure 1.
8. Replace the diaphragm casing (key 4) on the body
(key 1) and secure with the cap screws (key 2).
9. Secure the disk assembly (key 13) to the disk
spacer (key 44). Place the back disk spring (key 41)
and back body seal O-ring (key 42) on the back
body cap (key 43).
10. Use a good quality thread sealer when replacing the
body cap assembly.
Diaphragm and Spring Case Area
For a Type T208P Pilot
This procedure is for gaining access to the control
spring, diaphragm and lever assembly stem. All
pressure must be released from the diaphragm case
assembly before the following steps can be performed.
Key numbers are referenced in Figure 8.
To Change the Control Spring:
1. Remove the closing cap (key 22), and turn the
adjusting screw (key 35) counterclockwise until all
compression is removed from the spring (key 6).
8
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