Fisher S208 and S209 Pressure Reducing Regulator with Internal Slam-Shut Device Manuals & Guides
Instruction Manual
Form 5412
July 2012
Types S208 and S209
Types S208 and S209 Pressure Reducing Regulators
with Internal Slam-Shut Device
WARNING
!
Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion
and/or re 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. (Regulator
Technologies) 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.
Call a gas service person to service
the unit. Only a qualied person must
install or service the regulator.
Introduction
Scope of the Manual
W7876
Figure 1. Type S208K Pressure Reducing Regulator with
Type VSX-2 Slam-Shut Device
internal relief to allow overpressure caused by thermal
expansion to be released. The Types S208 and S209
include a Type VSX-2 integral slam-shut device. The
Type VSX-2 is a shut-off device that provides over
or over and underpressure protection by completely
shutting off the ow of gas to the downstream system.
The slam-shut device’s actions are independent of
the Types S208 and S209 regulators and of variations
to inlet pressure. The Type VSX-2 has internal
registration, except on the Type S208P or S209P where
a downstream sensing line is required.
This instruction manual provides installation,
adjustment, maintenance, and parts ordering
information for Types S208, S208H, S208P, S208PK,
S209, S209H, S209P, and S209PK gas service
regulators with Type VSX-2 integral slam-shut device.
Description
Types S208 and S209 regulators are typically installed
on industrial and commercial applications. Types S208
and S209 are similar in design to the Types S201 and
S202 regulators. Type S209 units contain a token
www.fisherregulators.com
Specications
The Specications section lists the ratings, pressure
ranges, and other specications for all Types S208 and
S209 regulators. The following information is stamped
on the regulator nameplate at the factory: type
number, manufacture date, spring range, orice size,
Type VSX-2 high and low trip pressures, maximum
inlet pressure, maximum outlet operating pressure,
and outlet pressure that may damage regulator parts.
D102247X012
Types S208 and S209
Specications
Available Congurations
See Table 1
Body Sizes and End Connection Styles
See Table 2
Maximum Inlet Pressure (Body Rating)
(1)
150 psig / 10.3 bar
Maximum Operating Inlet Pressure to Obtain
Optimum Performance by Orice Size
See Table 3
Maximum Outlet Pressure (Casing)
(1)
15 psig / 1.0 bar
Maximum Operating Outlet Pressure To Avoid
Internal Part Damage
(2)
Light Diaphragm Plate: 2 psi / 0.14 bar above
outlet pressure setting
Heavy Diaphragm Plate: 3 psi / 0.21 bar above
outlet pressure setting
Outlet Pressure Ranges
See Table 4
1. The pressure/temperature limits in this Instruction Manual and any applicable standard limitation should not be exceeded.
Type VSX-2 Trip Pressure Ranges
See Table 5
Pressure Setting Adjustment
Adjusting Screw
Pressure Registration
See Table 1
Material Temperature Capabilities
Nitrile (NBR): -20 to 150°F / -29 to 66°C
Fluorocarbon (FKM): 0 to 200°F / -18 to 93°C
(Upper temperature limitation due to
Nylon (PA) appers)
Type VSX-2: -20 to 140°F / -29 to 60°C
Control and Sensing Line Connections
(required on the “P” version only)
Types S208 and S209: 3/4 NPT
Type VSX-2: 1/4 NPT
Approximate Weight
30 pounds / 14 kg
(1)
Principle of Operation (Figure 2)
Types S208 and S209
When the downstream demand decreases, the
pressure under the diaphragm increases. This
pressure overcomes the regulator setting (which is
set by a spring). Through the action of the pusher
post assembly, the valve disk moves closer to the
orice and reduces gas ow. If demand downstream
increases, pressure under the diaphragm decreases.
Spring force pushes the pusher post assembly
downward, the valve disk moves away from the orice,
and the gas ow increases.
The Type S209 regulators include a limited capacity
internal relief valve for relief of thermal expansion. If the
downstream pressure exceeds the regulator setting by
8 inches w.c. to 2 psig / 20 mbar to 0.14 bar, depending
on the main spring used, the relief valve opens and
excess gas is vented through the stabilizer vent in the
upper spring case.
Type VSX-2 Slam-Shut Device
The Type VSX-2 slam-shut device on the Types S208
and S209 regulators is a fast acting shut-off valve which
provides over or over and underpressure protection by
completely shutting off the ow of gas to the downstream
system. The shutoff module’s actions are independent
of the Types S208 and S209 regulators and variations
to the inlet pressure. The Type VSX-2 has internal or
external registration. External registration requires a
downstream sensing line.
The shutoff disk is held in the open position (reset
position) by a small ball holding the disk stem. If
the pressure below the diaphragm increases (or
decreases) reaching the Type VSX-2 setpoint,
the diaphragm will travel upwards (or downwards)
operating a level which in turn releases the ball.
Once the ball is released, the spring force on the stem
will push the stem and disk to the closed position
against the seat shutting off all gas ow. The manual
reset has an internal bypass to equalize the reset
pressure on either side on the shut-off disk.
2
Type S208
July 2008
Type S208
Type VSX-2 with
External Registration
Type VSX-2 with
Internal Registration
Type S208
Type S209
Type S208
Type VSX-2 with
PUSHER POST ASSEMBLY
E0234
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
CONTROL SPRING
DIAPHRAGM
VALVE DISK
ORIFICE
TYPE S208
Types S208 and S209
TYPE VSX-2 MODULE
HIGH CONTROL SPRING
LOW CONTROL SPRING
ORIFICE INSERT
AND O-RING
TYPE VSX-2 WITH EXTERNAL
REGISTRATION
PUSHER POST ASSEMBLY
B2507
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
CONTROL SPRING
DIAPHRAGM
VALVE DISK
ORIFICE
TYPE S209
TYPE VSX-2 WITH INTERNAL
REGISTRATION
TYPE VSX-2 MODULE
HIGH CONTROL SPRING
LOW CONTROL SPRING
ORIFICE INSERT AND O-RING
Figure 2. Operational Schematics
3
Types S208 and S209
Table 1. Available Congurations
CONSTRUCTION FEATURES
Light diaphragm plate X X
Heavy diaphragm plate X X X X
Either light or heavy diaphragm plate
depending on outlet pressure range
Internal registration X X X X X
External registration - O-ring stem seal and
downstream control line connection
Internal relief - Token X X X
Type VSX-2 X X X X X X X X
S208 S208H S208K S208P S208PK S209 S209H S209P
Table 2. Body Sizes and End Connection Styles
BODY SIZE
NPS DN
1-1/4, 1-1/2, or
1-1/2 x 2
2 50
32, 40, or 40 x 50 NPT
END CONNECTION STYLE
NPT, CL125 FF anged, CL250 RF
anged, or PN 10/16 RF anged
In order for the Underpressure Shutoff (UPSO) of
any slam shut to be triggered, the downstream pipe
pressure must drop below the UPSO setpoint. In the
case of a downstream line break, numerous factors
can prevent the downstream pipe pressure from
decreasing below the slam-shut UPSO setpoint. These
factors include the distance of pipe to the break, the
diameter of the pipe, size of the break, and the number
of restrictions, such as valves, elbows and bends,
downstream of the regulator and/or slam-shut device.
Due to these factors additional protections should be
installed to stop ow in the event of a line break.
WARNING
!
Personal injury or system damage
may result if this regulator is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given on
the regulator nameplate. Regulator
installations should be adequately
protected from physical damage.
All vents should be kept open to permit
free ow of gas to the atmosphere. Protect
openings against entrance of rain, snow,
insects, or any other debris that may
plug the vent or vent line. On outdoor
installations, point the spring case vent
TYPE NUMBER
X X
X X X
Table 3. Orice Sizes and Maximum Operating Inlet Pressures
MAXIMUM
6.4
9.5
13
19
25
30
OPERATING
INLET
PRESSURE
125
8.6
125
8.6
100
6.9
60
4.1
25
1.7
13
0.90
C
53
110
190
415
700
910
g
C
1.51
3.14
5.43
11.9
20
26
v
C
1
35
ORIFICE SIZE
Inches mm psig bar
1/4
3/8
1/2
3/4
1
1-3/16
downward to allow condensate to drain.
This minimizes the possibility of freezing
of water or other foreign material from
entering the vent and interfering with
proper operation.
Under enclosed conditions or indoors,
escaping gas may accumulate and be
an explosion hazard. In these cases,
the vent should be piped away from the
regulator to the outdoors.
If the regulator or slam-shut device is
exposed to an overpressure condition,
it should be inspected for any damages
that may have occured. Operation
below these limits does not preclude
the possibility of damage from external
sources or from debris in the pipeline.
In the case of a downstream line break,
numerous factors affect the capability to
evacuate gas from the pipeline. These
factors include the distance of pipe to the
break, the diameter of the pipe, size of
the break, and the number of restrictions,
such as valves, elbows and bends,
downstream of the regulator and/or
slam-shut device. Due to these factors
additional protections should be installed
to stop ow in the event of a line break.
4
Table 4. Outlet Pressure Ranges
Types S208 and S209
TYPES
S208, S209,
S208P, and
S209P
OUTLET (CONTROL)
SPRING
NUMBER
- - - - 2 to 4.5
PRESSURE RANGE
Inch w.c. mbar Part Number Color Code
(1)
5 to 11
(1)
1D892527022 Brown Stripe 6.12 15.5 0.109 2.77
1 3.5 to 6.5 9 to 16 1D892627022 Red 7.5 19.1 0.120 3.05
2 5 to 9 12 to 22 1D892727012 Black 7.88 20.0 0.130 3.30
3 8.5 to 18 21 to 45 1D893227032 Gray 7.5 19.1 0.156 3.96
PILOT CONTROL SPRING
Free Length Wire Diameter
Inches cm Inches mm
4 14 to 30 35 to 75 1D893327032 Dark Green 7.25 18.4 0.182 4.62
5 1 to 2 psig 0.07 to 0.14 bar 1H975827032 Dark Blue 7.38 18.7 0.225 5.72
(2)
S208H, S208P
S209H, and
S209P
S208K and S208PK
1. With regulator installed so control spring is on top of diaphragm. If installed so control spring is on bottom, lower end of outlet pressure range can be reduced by 1-inch w.c. / 2 mbar
for regulator with light diaphragm plate or 2-inches w.c. / 5 mbar for regulator with heavy diaphragm plate.
2. Types S208P and S209P require heavy diaphragm plate for outlet pressures over 1 psig / 0.07 bar.
,
(2)
6 1.5 to 3.25 psig 0.10 to 0.22 bar 1H975927032 Orange 7.38 18.7 0.250 6.35
7 2 to 5 psig 0.14 to 0.34 bar 1P615427142 Yellow 6.5 16.5 0.283 7.19
8 2 to 5.5 psig 0.14 to 0.38 bar 0Y066427022 Green Stripe 6.00 15.2 0.363 9.22
9 4 to 10 psig 0.28 to 0.69 bar 1H802427032 Unpainted 6.00 15.2 0.406 10.31
Table 5. Type VSX-2 High and Low Trip Pressure Ranges
SETPOINT
RANGES
SLAM-SHUT
REGISTRATION
WITH MAIN
VALVE SPRING
NUMBER
(1,2)
1, 2 12 to 25 30 to 62 T14162T0012 Black 3.15 80.0 0.067 1.70
1, 2, 3, 4 20 to 52 50 to 129 T14163T0012 Brown 3.15 80.0 0.080 2.03
FOR USE
Overpressure
Shutoff
Internal or
External
3, 4, 5, 6 1.4 to 3.9 psig 0.10 to 0.27 bar T14164T0012 Red 3.15 80.0 0.091 2.31
5, 6, 7, 8, 9 3.8 to 8.7 psig 0.26 to 0.60 bar T14165T0012 Orange 3.15 80.0 0.120 3.05
9 5.8 to 16 psig 0.40 to 1.1 bar T14166T0012 Pink 3.15 80.0 0.138 3.51
2, 3 2 to 12 5 to 30 T14168T0012 White 3.15 80.0 0.043 1.09
3, 4, 5, 6 4 to 30 10 to 75 T14169T0012 Blue 3.15 80.0 0.055 1.40
External
5, 6, 7, 8
7, 8, 9 1.5 to 10.8 psig 0.10 to 0.75 bar T14171T0012 Olive 3.15 80.0 0.125 3.18
(3)
2, 3, 4
(4)
Underpressure
5, 6
Shutoff
(4)
5, 6, 7, 8
Internal
(4)
7, 8
(4)
9
1. See Table 4 for main valve spring number.
2. Other spring combinations are available, please contact your local Sales Ofce for additional information. Trip pressure that are 2 or 3 psig / 0.14 to 0.21 bar
over set pressure may result in internal parts damage.
3. Regulator main valve spring numbers 2, 3, and 4 cannot be used with an internally registered Type VSX-2 to provide underpressure shutoff under owing conditions. If protection
against loss of inlet pressure is the only required function for the Type VSX-2 then an internally registered Type VSX-2 may be used with the same minimum trip pressures as an
externally registered Type VSX-2.
4. 50% of regulator setpoint is the minimum allowable underpressure shutoff setting for an internally registered Type VSX-2 used with main valve spring numbers 5, 6, 7, and 8.
70% of regulator setpoint is the minimum allowable underpressure shutoff setting for an internally registered Type VSX-2 used with main valve spring number 9. If protection against
loss of inlet pressure is the only required function for the Type VSX-2 then an internally registered Type VSX-2 may be used with the same minimum trip pressures as an externally
registered Type VSX-2.
MINIMUM TO MAXIMUM
TRIP PRESSURE
Inch w.c. mbar Inches mm Inches mm
10 inches w.c.
to 2.3 psig
25 mbar to
0.16 bar
TYPE VSX-2
SPRING PART
NUMBER
SPRING
COLOR
T14170T0012 Silver 3.15 80.0 0.067 1.70
SPRING FREE
LENGTH
SPRING WIRE
DIAMETER
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
50% of regulator
setpoint to
30
50% of regulator
setpoint to
2.3 psig
50% of regulator
setpoint to
10.8 psig
70% of regulator
setpoint to
10.8 psig
50% of regulator
setpoint to
75
50% of regulator
setpoint to
0.16 bar
50% of regulator
setpoint to
0.75 bar
70% of regulator
setpoint to
0.75 bar
T14169T0012 Blue 3.15 80.0 0.055 1.40
T14170T0012 Silver 3.15 80.0 0.067 1.70
T14171T0012 Olive 3.15 80.0 0.125 3.18
T14171T0012 Olive 3.15 80.0 0.125 3.18
5
Types S208 and S209
USE THIS END FOR
UNDERPRESSURE TRIP
ADJUSTMENT
USE THIS END FOR
OVERPRESSURE
TRIP ADJUSTMENT
W7874 W7877
TYPE VSX ADJUSTING TOOL
Figure 3. Type VSX Adjusting Tool
Before installing the regulator, check for damage
which might have occurred in shipment. Also check
for dirt or foreign matter that may have accumulated
in the regulator body or in the pipeline. Apply pipe
compound to the external threads of the pipeline and
install the regulator so that ow is in the direction of
the arrow cast on the body. The diaphragm casing
assembly can be rotated to any position relative to the
body. Loosen the two cap screws (not shown) in order
to rotate the diaphragm casing assembly.
Do not install the regulator in a location where there
can be excessive water accumulation, such as directly
beneath a downspout.
The Types S208 and S209 regulators have 1 NPT
screened vent openings in the spring case. If necessary
to vent escaping gas away from the regulator, install a
remote vent line in the spring case 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.
Vent piping on regulators with internal relief (Type S209)
must be large enough to vent all relief valve discharge
to atmosphere without excessive backpressure and
resulting excessive pressure in the regulator. The
Type VSX-2 has 1/4 NPT vent opening.
Periodically check all vent openings to be sure that
they are not plugged.
TYPE VSX TOOL BEING USED TO ADJUST A TYPE VSX-2
Type VSX-2 Installation
The Type VSX-2 may be shipped separately from the
regulator. To install the Type VSX-2 on a regulator,
place the new O-rings (keys 2 and 3, Figure 10)
on the Type VSX-2 and slide the module into the
regulator body (key 21, Figures 5 through 8). Secure
the Type VSX-2 to the regulator body with the four set
screws (key 4, Figure 10). The Type VSX-2 device
may be oriented in any direction with respect to the
sensor line connection.
Startup
WARNING
!
Pressure gauges should always be used
to monitor downstream pressure during
startup. Procedures used in putting this
regulator into operation must be planned
accordingly if the downstream system is
pressurized by another regulator or by a
manual bypass.
If the downstream system is not pressurized by
another regulator or manual bypass valve, use the
following procedure to start up the regulator.
6
Types S208 and S209
1. Check to see that all appliances are turned off.
2. The Type VSX-2 is shipped in the tripped position
and will need to be reset. If the Type VSX-2 is
a high trip only, it can be reset before starting
the regulator. If the Type VSX-2 is a high and
low trip, the regulator will have to be started and
the downstream system pressurized before the
Type VSX-2 can be reset. See the section for
Type VSX-2 reset.
3. Slowly open the upsteam block valve.
4. Check all connections for leaks.
5. Light appliance pilots.
Adjustment
Types S208 and S209
The range of allowable pressure settings is stamped
on the nameplate. If the required setting is not within
this range, substitute the correct spring (as shown in
Table 4). If the spring is changed, be sure to change
the nameplate to indicate the new pressure range. If
the regulator spring is changed the Type VSX-2 must
be adjusted accordingly.
A pressure gauge should always be used to monitor
downstream pressure while adjustments are being made.
1. Remove the closing cap (key 4, Figures 5 through 8).
2. To increase the outlet setting, turn the adjusting
screw (key 3, Figures 5 through 8) clockwise.
To decrease the outlet setting, turn the adjusting
screw counterclockwise.
3. Replace the closing cap.
Use the following procedure to adjust the
Overpressure Trip Spring:
1. Use the Type VSX adjusting tool to adjust the
overpressure trip spring to its maximum compression.
2. If present, adjust the underpressure spring (using the
Type VSX adjusting tool) to its minimum compression.
3. Backpressure the unit with the desired trip pressure.
4. Use the Type VSX tool to reduce the overpressure trip
spring compression until the Type VSX-2 trips.
Use the following procedure to adjust the
Underpressure Trip Spring:
1. Use the Type VSX adjusting tool to
adjust the underpressure trip spring to its
minimum compression.
2. Backpressure the unit with the desired trip pressure.
3. Increase the underpressure trip spring compression
(using the Type VSX adjusting tool) until the
Type VSX-2 trips.
Shutdown
Installation arrangements may vary, but in any
installation it is important that the valves be opened or
closed slowly and that the outlet pressure be vented
before venting inlet pressure to prevent damage caused
by reverse pressurization of the regulator. The steps
below apply to the typical installation as indicated.
1. Slowly close the upstream shut-off valve.
2. Slowly open the vent valves up and downstream
of the regulator.
Type VSX-2 Trip Adjustment
Note
An adjustment tool is included with the
Type VSX-2 (see Figure 3). Use only
this tool to make adjustments to the
Type VSX-2. To make adjustments,
the overpressure trip spring is found
under the outer adjusting screw and the
underpressure trip spring is found under
the inner adjusting screw.
Type VSX-2 Reset
Note
The over and under trip pressure can
only be reset if the Types S208 and S209
outlet pressure is between the over and
under trip pressure.
Use the following procedure to reset the Type VSX-2:
1. Unscrew the brass knob to open the
equalizing bypass.
2. Pull out on the knob until it stops. This resets the
tripping mechanism.
3. Push in and tighten the knob.
7
Types S208 and S209
Maintenance
WARNING
!
To avoid personal injury or equipment
damage, do not attempt any maintenance
or disassembly without rst isolating
the regulator from system pressure
and relieving all internal pressure as
described in the Shutdown section.
Regulators that have been disassembled
for repair must be tested for proper
operation before being returned to service.
Only parts manufactured by Regulator
Technologies should be used for repairing
Fisher® regulators. Relight pilot lights
according to normal Startup procedures.
Due to normal wear or damage that
may occur from external sources, this
regulator should be inspected and
maintained periodically. The frequency
of inspection and replacement of parts
depends upon the severity of service
conditions or the requirements of local,
state, and federal rules and regulations.
Types S208 and S209 Maintenance
5. Unscrew the cap screw or stem (key 24) that
fastens the lower spring seat (key 6) to the
pusher post and separate the lower spring seat,
diaphragm and diaphragm head assembly, and
pusher post. For Type S209 regulators, the relief
valve spring (key 25) and relief restriction (key 94)
will also have to be removed.
CAUTION
Before tightening the spring case cap
screws (key 14) in step 6, replace the
spring (key 2) and adjusting screw
(key 3). Turn the adjusting screw to
about mid-position. This will stretch
the oversized diaphragm to ensure
slack in the assembled diaphragm.
The slack created by this method is
necessary for good regulation. Be sure
the diaphragm does not fold over at the
ange when reassembling.
6. Reassemble the spring case unit in the reverse
order of the above steps. Before tightening the
cap screw or stem into the pusher post, place
the loosely assembled diaphragm assembly into
position in the lower casing, being sure that the
pusher post is hooked into the lever. Rotate the
diaphragm so that the diaphragm and lower casing
holes are aligned. Tighten the screw or stem.
The key numbers in the following sections refer
to Figures 5 through 8.
Disassembly to Replace Diaphragm
1. Remove the closing cap (key 4). Turn the
adjusting screw (key 3) counterclockwise to
remove spring compression.
2. Remove the adjusting screw (key 3) and spring
(key 2).
3. Remove the hex nuts (key 15) and cap screws
(key 14). Separate the upper spring case (key 1)
from the lower casing assembly (key 9).
Note
If disassembling a Type S209 regulator,
lift the upper spring case straight up in
order to avoid hitting the stem.
4. Slide the diaphragm and diaphragm head assembly
(key 7) away from the body (key 21) to unhook the
pusher post (key 8) from the lever (key 10). Lift off
the diaphragm and diaphragm head assembly.
Disassembly to Replace Valve Disk and Orice
1. Remove the bolts (key 18) that hold the lower spring
casing (key 9) to the body (key 21). Separate the
lower spring casing from the body.
2. Check the body O-ring (key 19) for wear.
Note
Replace used O-rings with new O-rings.
Used or damaged O-rings can cause leaks.
3. Examine the valve disk holder and disk (key 16) for
nicks, cuts, and other damage. Unscrew the disk
holder assembly from the valve stem assembly
(key 13) and replace it with a new part if necessary.
4. If the seating edge of the orice is nicked or rough,
remove the orice (key 20), insert (key 121) and
O-ring (key 122) from the body, Figure 9. Change
to new parts when reassembling the regulator. If
the orice is being replaced with a different size
orice, change the nameplate to state the new
size and maximum inlet pressure.
5. Reassemble the regulator in the reverse order of
the above steps.
8
Types S208 and S209
T80385_D
4
3
32
15
5
L
14
2
59
57
60
56
Figure 4. Two-Way Stabilizer Vent
55
58
62
61
6
1
19
13
16
21
T80385_D
APPLY LUBRICANT (L)
7
8
10
12 11 9
Figure 5. Types S208 and S208H Assembly
L
9
Types S208 and S209
Type VSX-2 Maintenance
The Type VSX-2 device (key 1, Figure 10) is designed
to remove as a unit from the Types S208 and S209
body (key 21, Figures 5 through 8) and be replaced
as a complete unit. The only replaceable parts in
the Type VSX-2 module are the O-rings (keys 2 and
3, Figure 10) and the high and low pressure springs
(keys 7 and 8, Figure 10). The high and low pressure
springs may be adjusted or replaced without removing
the slam-shut from the Type S208 or S209 body.
Parts Ordering
The type number, orice size, spring range, and
date of manufacture are stamped on the nameplate.
Always provide this information in any correspondence
with your local Sales Ofce regarding replacement
parts or technical assistance. If construction changes
are made in the eld, be sure that the nameplate is
also changed to reect the most recent construction.
When ordering a replacement part, be sure to include
the complete eleven-character part number from the
following parts list.
Parts List
Types S208 and S209 (Figures 4 through 9)
Key Description Part Number
1 Spring Case, Aluminum
Standard 4L142308032
With travel stop 1J718699022
2 Spring, Steel see Table 4
3 Adjusting Screw, Aluminum 1L928608012
4 Closing Cap, Aluminum 1L928308012
5* Closing Cap Gasket, Neoprene (CR) 1N446206992
6 Lower Spring Seat, Aluminum 1L928708012
7 Diaphragm and Head Assembly
Standard Head 1L1544X0012
Heavy Head 1L1545X0012
8 Pusher Post
For All Types S208 2H980608012
For All Types S209 2H975208012
9 Lower Casing Assembly, Aluminum
For All Types except Types S208K and S208PK 1H9751X0012
For Types S208K and S208PK
(includes 9A, 9B, and 9C)
9A Lower Casing T20915T0012
9B Union Ring 2H9734T0012
9C Spring Pin 1H975038992
10 Lever, Steel 1H974028992
11 Pin, 303 Stainless steel 1H972935032
Key Description Part Number
12 Machine Screw, Steel (2 required) 1B420428982
13 Valve Stem Assembly
For Types S208, S208H, S208PK,
S209, and S209H 1H9748000A2
For Types S208K, S208P, and S209P 1L1426000A2
14 Cap Screw, Steel (12 required) 1B136324052
15 Hex Nut, Steel (12 required) 1A309324122
16 Disk Holder
For Natural Gas 1P7349000A2
For Manufactured Gas and
5/8 inch / 16 mm orice or larger 1J1680X0012
17 Diaphragm Head (Types S208K and S208PK) 1A347825022
18 Cap Screw (not shown), Plated steel
(2 required) T14254T0012
19* O-ring, Nitrile (NBR) T12587T0012
20 Orice, Aluminum
1/4 inch / 6.4 mm T13833T0012
3/8 inch / 9.5 mm 1H979309022
1/2 inch / 13 mm 1H979409022
3/4 inch / 19 mm 1H979509022
1 inch / 25 mm 1H979609022
1-3/16 inch / 30 mm 1H979709022
21 Body, Ductile Iron
1-1/2 NPT T40561T0012
NPS 2 / DN 50
NPT T40562T0012
CL125 FF anged T80424T0012
CL250 RF anged T80425T0012
PN 10/16 anged T80426T0012
24 Cap Screw (not for Type S209), Zinc-plated steel
For Types S208 and S208P 1H975424272
For Types S208H and S208P 1A667824052
For Types S208K and S208PK 1K427828982
Stem (for Types S209 and S209P only),
Zinc-plated steel 1H969224272
25 Relief Valve Spring (for Type S209),
Plated steel 1H976027012
32 Nameplate - - - - - - - - - - 55 Flapper Stem, 302 Stainless steel 1H976335022
56 Lower Flapper, Nylon (PA) 1H976406992
57 Upper Flapper, Nylon (PA) 1H976506992
58 Orice, 302 Stainless steel T13609T0012
59 Self-tapping Screw, Steel (3 required) 1H976728982
60 Spring, 302 Stainless steel (2 required) 1H976837022
61 Screen, Monel
62 Snap Ring, 302 Stainless steel 1E564937022
63 Retaining Ring
(for Types S208K, S208P, and S209P) 1L142838992
64 O-ring (for Types S208K, S208P, and S209P) 1L142906992
65 O-ring 1E216306992
66 Wiper Ring, Nitrile (NBR) 1L143006992
67 Stem Adaptor
(for Types S208K, S208P, and S209P) 1L143109012
94 Relief Restriction (for Type S209) 1U983936012
121 Insert T14013T0012
122 O-ring T1072606562
123 Pipe Plug, 1/4 NPT 1A767524662
®
1E564843122
*Recommended spare part.
Monel® is a mark owned by Special Metals Corporation.
10
4
3
32
Types S208 and S209
6
1
5
67
L
L
13
16
14
15
2
7
8
T80386_D
APPLY LUBRICANT (L)
66
21
10 12 11 9 19 64
Figure 6. Type S208P Assembly
11
Types S208 and S209
4
5
3
L
94
6
1
24
25
32
14
15
2
7
8
T80387_D
APPLY LUBRICANT (L)
10
12
11
19
13
16
21
9
L
NOTE: KEY 7 INCLUDES THE
DIAPHRAGM (KEY 7A) AND THE
DIAPHRAGM HEAD (KEY 7B)
12
Figure 7. Types S209 and S209H Assembly
Types S208 and S209
4
3
24
32
15
7
5
L
25
14
2
94
6
1
37
L
13
16
66
21
8
T80388_C
APPLY LUBRICANT (L)
10 12 9 19
Figure 8. Type S209P Assembly
11
64
63
65
13
Types S208 and S209
9B
T80385_D
L
18
123
L
S
T80385_D
APPLY LUBRICANT (L) SEALANT (S)
14
20
121
122
DETAIL B
Figure 9. Typical External View and Orice Detail
L
VIEW A
Types S208 and S209
T80390_C
VIEW A
Figure 10. Type VSX-2 Assembly
15
Types S208 and S209
Type VSX-2 Slam-Shut Device (Figure 10)
Key Description Part Number
1 Type VSX-2 Module FA196247X12
2 Upper O-ring T13769T0012
3 Lower O-ring T13772T0012
4 Set Screw (4 required) 1C629828992
6 Vent Assembly 27A5516X012
7 High pressure Control Spring, Zinc-plated steel
12 to 25 inches w.c. / 30 to 62 mbar, Black T14162T0012
20 to 52 inches w.c. / 50 to 129 mbar, Brown T14163T0012
1.4 to 3.9 psi / 0.10 to 0.27 bar, Red T14164T0012
3.8 to 8.7 psig / 0.26 to 0.60 bar, Orange T14165T0012
5.8 to 16 psig / 0.40 to 1.1 bar, Yellow T14166T0012
8 Low pressure Control Spring, Zinc-plated steel
2 to 12 inches w.c. / 5 to 30 mbar, White T14168T0012
4 to 30 inches w.c. / 10 to 75 mbar, Blue T14169T0012
10 inches w.c. to 2.3 psig /
25 mbar to 0.16 bar, Silver T14170T0012
1.5 to 10.8 psig / 0.10 to 0.75 bar, Olive T14171T0012
10 Machine Screw (for external control line), Steel 1H8162X0012
11 Gasket (for external control line) T14191T0012
12 Adjustment Tool (see Figure 3) FA142932X12
13 Pipe Plug (for external registration) 1A767524662
Industrial Regulators
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75069-1872, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
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Tel: +971 4811 8100
For further information visit www.fisherregulators.com
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a business of Emerson Process Management.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or
guarantees, express or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such
products at any time without notice.
Emerson Process Management does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Emerson
Process Management product remains solely with the purchaser.
Natural Gas Technologies
Emerson Process Management
Regulator Technologies, Inc.
USA - Headquarters
McKinney, Texas 75069-1872, USA
Tel: +1 800 558 5853
Outside U.S. +1 972 548 3574
Asia-Pacic
Singapore 128461, Singapore
Tel: +65 6770 8337
Europe
Bologna 40013, Italy
Tel: +39 051 419 0611
Chartres 28008, France
Tel: +33 2 37 33 47 00
TESCOM
Emerson Process Management
Tescom Corporation
USA - Headquarters
Elk River, Minnesota 55330-2445, USA
Tels: +1 763 241 3238
+1 800 447 1250
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