Instruction Manual
D103232X012
August 2018
161 Series
161 Series Pilots for Pilot-Operated Pressure
Reducing Regulators
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™ 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 unqualied
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualied person shall install or service
the 161 Series regulator.
W7430
TYPE 161AY
W6505
TYPE 161EB
Introduction
Scope of the Manual
This manual provides installation, startup,
maintenance and parts ordering information for the
161 Series Pilots used together with pilot-operated
pressure reducing regulators in low and high-pressure
applications. For information on mounting on
Figure 1. 161 Series Pilot
pilot-operated regulators, monitoring systems and
installations, refer to full product literature:
Type EZR: D102600X012
Type EZL: D103091X012
161 Series
Specications
The Specications section lists pressure limitations and other specications for all models of 161 Series pilots.
Please note that the pilot control spring range is marked on the spring case of 161 and 161EB Series pilots and
on the nameplate of 161AY Series pilots.
Outlet (Control) Pressure Ranges
See Table 1
Proportional Bands
See Table 1
Maximum Inlet Pressure
(1)
See Table 2
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
Pilot Flow Coefcients
See Table 3
Options
Type 252 Pilot supply lter
Pilot Sping Case Vent
1/4 NPT (internal)
Table 1. Outlet (Control) Pressure Ranges, Proportional Bands and Pilot Control Spring Information
OUTLET (CONTROL)
PILOT TYPE
161 or 161M
161AY, 161AYM
or 161AYW
161EB or
161EBM
161EBH or
161EBHM
1. Proportional band includes outlet pressure drop plus hysteresis (friction), but does not include lockup.
2. Proportional band was determined with a pressure drop ranging from 50 to 150 psig / 3.4 to 10.3 bar. Approximately double the proportional band if the pressure drop is less than
50 psig / 3.4 bar.
3. With Type 112 restrictor set on 2.
4. The spring ranges for the Type 161AYW is 3 to 12 in. w.c. / 7.5 to 30 mbar.
5. The spring ranges for the Type 161AYW is 11 to 25 in. w.c. / 27 to 62 mbar.
6. The spring ranges for the Type 161AYW is 0.9 to 2.5 psig / 0.06 to 0.17 bar.
7. Proportional band was determined with a pressure drop ranging from 100 to 300 psig / 6.9 to 20.7 bar. Approximately double the proportional band if the pressure drop is less than
100 psi / 6.9 bar
PRESSURE RANGE
psig bar psig bar In. mm In. mm
5 to 15 0.34 to 1.03 2 0.14 1E392527022 Yellow 0.148 3.76 2.00 50.8
10 to 125 0.69 to 8.62 2 0.14 1K748527202 Red 0.192 4.88 2.19 55.6
120 to 300 8.3 to 20.7 6 0.41 15A9258X012 Green 0.243 6.17 1.88 47.8
6 to 15 in. w.c.
0.5 to 1.2
1.2 to 2.5
130 to 200 8.96 to 13.8 1.5 0.10 17B1263X012 Blue 0.262 6.66 3.85 97.8
200 to 350 13.8 to 24.1 3 0.21 17B1264X012 Red 0.294 7.47 4.22 107
250 to 450 17.2 to 31.0 3.5 0.24
400 to 700 27.6 to 48.2 7 0.48
(4)
15 to 37 mbar
(5)
0.03 to 0.08
(6)
0.08 to 0.17
2.5 to 4.5 0.17 to 0.31 0.5 0.03 1B537227022 Light Blue 0.187 4.75 3.94 100
4.5 to 7 0.31 to 0.48 0.5 0.03 1B537327052 Black 0.218 5.54 3.98 101
5 to 15 0.34 to 1.03 0.5 0.03 17B1260X012 White 0.120 3.05 3.75 95.2
10 to 40 0.69 to 2.76 0.5 0.03 17B1262X012 Yellow 0.148 3.76 3.75 95.2
30 to 75 2.07 to 5.17 0.6 0.04 17B1259X012 Black 0.187 4.75 4.00 102
70 to 140 4.83 to 9.65 1.3 0.09 17B1261X012 Green 0.225 5.71 3.70 94.0
(4)
(5)
1 in. w.c 2 mbar 1B537027052 Yellow 0.114 2.90 4.31 109
(6)
0.5 0.03 1B537127022 Green 0.156 3.96 4.06 103
PROPORTIONAL
(1)(2)(3)
BAND
1 in. w.c 2 mbar 1B653927022 Olive Green 0.105 2.67 3.75 95.2
Part Numbers Color Code
(7)
17B1263X012 Blue 0.262 6.66 3.85 97.8
(7)
17B1264X012 Red 0.294 7.47 4.22 107
PILOT CONTROL SPRING INFORMATION
Wire Diameter Free Length
Table 2. Pilot Pressure Ratings
TYPE
161 1500 103 1200 82.7
161AY 150 10.3 150 10.3
161EB and 161EBH 1500 103 1200 82.7
161M 1500 103 1200 82.7 1500 103
161AYM or 161AYW 150 10.3 150 10.3 150 10.3
161EBM and 161EBHM 1500 103 1200 82.7 1500 103
1. Maximum pressure to prevent the casings from bursting during abnormal operation (leaking to atmosphere and internal parts damage may occur).
MAXIMUM INLET PRESSURE
psig bar psig bar psig bar
MAXIMUM EMERGENCY
OUTLET PRESSURE OR MAXIMUM
EMERGENCY SENSE PRESSURE
(1)
2
MAXIMUM BLEED (EXHAUST) PRESSURE
FOR MONITOR PILOTS
- - - -
Orice Size C
3/32 in. / 2.4 mm
1/8 in. / 3.2 mm
1/4 in. / 6.4 mm
Table 3. Pilot Flow Coefficients
161AY SERIES 161EB SERIES
6.9
12.3
50
g
C
0.20
0.35
1.43
v
C
1
35
35
35
Orice Size C
1/8 in. /
3.18 mm
g
8.5 0.28 30.4
161 Series
C
v
C
1
Product Description
The 161 Series pilots are mainly used in natural
gas, air or other non-corrosive gas applications. For
applications that have high pressure drops, using a
Type 161AYM, 161EBM or 161EBHM monitor pilot will
increase the accuracy of the regulator.
161 Series pilot models are the following:
Type 161—Downstream pressure range from 5 to
300 psig / 0.34 to 20.7 bar. Pilot bleed exhausts
downstream through the sense (control) line.
Type 161M—Downstream pressure range from
5 to 300 psig / 0.34 to 20.7 bar. A static sensing
(control) line is isolated from pilot bleed (exhaust).
The Type 161M is used in working monitor and other
application that require a sense (control) line isolated
from pilot bleed (exhaust).
Type 161AY—Low-pressure pilot with an outlet
pressure range from 6 in. w.c. to 7 psig / 15 mbar to
0.48 bar. Pilot bleeds (exhausts) downstream through
the sense (control) line.
Type 161AYM—The monitor version of the
Type 161AY pilot. The pilot bleed (exhaust) is
isolated from the sense (control) line. This pilot is
used in monitoring systems requiring an isolated pilot
bleed (exhaust).
Type 161AYW- A version of the Type 161AY used
solely as the upstream monitor pilot on a working
monitor setup.
Type 161EB—High accuracy pilot with an outlet
pressure range from 5 to 350 psig / 0.34 to 24.1 bar.
Pilot bleeds (exhausts) downstream through the sense
(control) line.
Type 161EBM—The monitor version of the
Type 161EB pilot. The pilot bleed (exhaust) is
isolated from the sense (control) line. This pilot is
used in monitoring systems requiring an isolated pilot
bleed (exhaust).
Type 161EBH—The high pressure version of the
Type 161EB pilot with an outlet pressure range from
250 to 700 psig / 17.2 to 48.3 bar.
Type 161EBHM—The high pressure version of the
Type 161EBM pilot with an outlet pressure range from
250 to 700 psig / 17.2 to 48.3 bar.
Principle of Operation
As long as the outlet (control) pressure is above
the outlet pressure setting, the pilot valve plug or
disk remains closed. Force from the main spring,
in addition to inlet pressure bleeding through the
Type 112 restrictor, provides downward loading
pressure to keep the main valve diaphragm and plug
assembly tightly shutoff. When the outlet pressure
decreases below the pilot outlet pressure setting, the
pilot plug or disk assembly opens. Loading pressure
bleeds downstream through the pilot faster than it
can be replaced through the Type 112 restrictor. This
reduces loading pressure on top of the main valve
diaphragm and plug assembly and lets the unbalanced
force between inlet and loading pressure overcome
the main spring force to open the regulator diaphragm
and plug assembly.
As the outlet pressure rises toward the outlet pressure
setting, it compresses the pilot diaphragm against the
pilot control spring and lets the pilot valve plug close.
Loading pressure begins building on the regulator
diaphragm and plug assembly. The loading pressure,
along with force from the main spring, pushes the
diaphragm and plug assembly onto the knife-edged
seat, producing tight shutoff.
Installation
WARNING
!
Personal injury or equipment damage,
due to bursting of pressure-containing
parts may result if this regulator is
overpressured or is installed where
service conditions could exceed any
rating of the adjacent piping of piping
connections. To avoid such injury or
damage, provide pressure-relieving or
pressure-limiting devices to prevent
service conditions from exceeding those
limits. Also, be sure the installation is
in compliance with all applicable codes
and regulations. Additionally, physical
damage to the regulator could break
the pilot off the main valve, causing
3
161 Series
personal injury and property damage
due to bursting of pressure-containing
parts. To avoid such injury and damage,
install the regulator in a safe location.
1. Use qualied personnel when installing, operating
and maintaining pilots. Before installing, inspect
pilot and tubing, for any shipment damage or
foreign material that may have collected during
crating and shipment. Make certain that body is
clean and the pipelines are free of foreign material.
WARNING
!
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.
2. Pilots have a 1/4 NPT vent connection in the
spring case. To remotely vent gas from the spring
case, remove the screened vent and connect
1/4 in. / 6.4 mm piping or tubing. It should vent to
a safe location, have as few elbows as possible
and have a screened vent on its exhaust. Install
the regulator and any remote vent spring or tubing
so that the vent is protected from condensation,
freezing or substance that may clog it.
CAUTION
To avoid freeze-up because of pressure
drop and moisture in the gas, use
anti-freeze practices, such as heating
the supply gas or adding a de-icing
agent to the supply gas.
3. Run a 3/8 in. / 9.5 mm outer diameter or larger
pilot supply line from the upstream pipeline to the
lter inlet, bushing the line down to t the 1/4 NPT
lter connection. Do not make the upstream
pipeline connection in a turbulent area, such as
near a nipple, swage or elbow. If the maximum
pilot inlet pressure could exceed the pilot rating,
install a separate pressure reducing regulator in
the pilot supply line. Install a hand valve in the pilot
supply line and provide vent valves to properly
isolate and relieve the pressure from the regulator.
4. Attach a 1/2 in. / 13 mm piping or tubing
downstream control line to the 1/2 NPT control
line connection on the actuator casings. Connect
the other end of the control line to the pipeline
downstream of the regulator. Do not attach the
control line near any elbow, swage, block valve
or any other location that might cause turbulence.
Install a full port ball valve in the control line
to shut off the control pressure when using
the bypass.
Startup and Adjustment
Pre-Startup Considerations
Each regulator is factory-set for the outlet pressure
specied on the order. If no setting was specied,
outlet pressure was factory-set at the mid-range of
the pilot control spring. Before beginning the startup
procedure in this section, make sure the following
conditions are in effect:
• Block valves isolate the regulator
• Vent valves are closed
• A bypass, if any, is in operation
In all cases, check the control spring setting to make
sure it is correct for the application.
CAUTION
Be sure to slowly introduce pressure
into the system to prevent downstream
overpressure due to potential rapid
pressure increase. 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.
Pilot Adjustment
For 161 Series pilots, remove the pilot closing cap
(key 16, Figures 4 through 6 or key 22, Figure 7)
and, on 161EB Series only, loosen the locknut
(key 12, Figure 4). Turn the adjusting screw (key 11,
Figures 4 through 6 or key 35, Figure 7) into the
4
spring case (key 2, Figures 4 through 6 or key 3,
Figure 7) to increase the downstream pressure. Turn
the adjusting screw out of the spring case to decrease
the downstream pressure.
Shutdown
CAUTION
If pilot supply pressure is shut down
rst, the downstream system may be
subjected to full inlet pressure.
1. If the pilot setting must be disturbed, be sure to
keep some tension on the spring. This will prevent
trapping inlet pressure during blowdown.
2. Slo wly close the valves in the following order:
a. Inlet block valve
b. Outlet block valve
c. Control line valve(s), if used.
3. Open the vent valves to depressurize the system.
161 Series
W4570-1
Figure 2. 161EB Series Pilot Trim Removal/Installation
Note
This procedure covers all 161EB Series
pilots. Types 161EB and 161EBM are
rated for outlet pressure settings over
200 psig / 13.8 bar. Types 161EB and
161EBM pilots rated for outlet pressure
settings under 200 psig / 13.8 bar do not
require a diaphragm limiter.
Maintenance
Pilot 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.
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.
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
before attempting disassembly.
161 and 161EB Series Pilots
(Figures 4 through 6)
Trim Parts
1. As shown in Figure 2, remove the body plug
(key 3) to let the plug spring (key 6) and valve plug
(key 4) drop freely from the body.
2. Inspect the removed parts and body plug O-ring
(key 15), replace as necessary and make sure the
plug seating surfaces are free from debris.
3. Sparingly apply lubricant to the body plug O-ring
(key 15) and the threads of the body plug (key 3).
Install the body plug O-ring over the body plug.
4. Stack the plug spring (key 6) and valve plug
(key 4) on the body plug (key 3). Install the body
plug with stacked parts into the body (key 1).
Diaphragm Parts
1. Remove the closing cap (key 16), loosen the
locknut (key 12) and back out the adjusting screw
(key 11) until compression is removed from the
control spring (key 9).
2. Remove the machine screws (key 13, not shown)
and separate the spring case (key 2) from the
body (key 1). Remove the control spring seat
5
161 Series
(key 8) and the control spring (key 9). If used,
remove the diaphragm limiter (key 10) and inspect
the diaphragm limiter O-ring (key 23). Replace
if necessary.
3. Remove the diaphragm assembly (key 7) and
inspect the diaphragm.
4. On Types 161EBM and 161EBHM pilots, inspect
the stem guide seal assembly (key 19) and, if
damaged, replace the complete assembly. Inspect
the outer O-ring (key 22) and replace if necessary.
5. Install the diaphragm assembly (key 7) and push
down on it to see if the valve plug (key 4) strokes
smoothly and approximately 1/16 in. / 1.6 mm.
Note
In step 6, if installing a control spring
with a different range, be sure to replace
the spring range indicated on the
spring case with the new spring range.
A diaphragm limiter (key 10) and other
listed parts are required with the highest
spring range.
6. Stack the control spring (key 9), the control spring
seat (key 8), if used and the diaphragm limiter
(key 10) onto the diaphragm assembly (key 7).
Make sure that, if used, the diaphragm limiter
is installed bevelled side up. Sparingly apply
lubricant to the control spring seat.
7. Install the spring case (key 2) on the body
(key 1) with the vent (key 18) oriented to allow
for wrenches, needed for connecting outlet
piping and to prevent clogging or entrance of
moisture. Install the machine screws (key 13)
and, using a crisscross pattern torque them to
5 to 7 ft-lbs / 6.8 to 9.4 N•m for stainless steel
constructions and 2 to 3 ft-lbs / 2.7 to 4.1 N•m for
aluminum constructions.
Note
Spring case vent may be mounted in
any orientation convenient to your
application, but plastic vent (key 18)
should be oriented downward.
8. When all maintenance is complete, refer to the
Startup and Adjustment section to put the regulator
back into operation and adjust the pressure
setting. Tighten the locknut (key 12), replace the
closing cap gasket (key 17) if necessary and install
the closing cap (key 16).
161AY Series Pilots (Figure 7)
Body Area
Use this procedure to gain access to the disk assembly,
orice and body O-ring. All pressure must be released
from the diaphragm casing and the disk assembly must
be open, before these steps can be performed.
1. Remove the cap screws (key 2) and separate the
diaphragm casing (key 4) from the body (key 1).
2. Remove body seal O-ring (key 11) and the backup
ring (key 50). Inspect the body seal O-ring and
replace if necessary.
3. Inspect and replace the orice (key 5) if necessary.
Lubricate the threads of the replacement orice
with a good grade of light grease and install with
29 to 37 ft-lbs / 39 to 50 N•m of torque.
4. On Types 161AY and 161AYM, remove the
cotter pin (key 15) if it is necessary to replace the
disk assembly (key 13) or the throat seal O-ring
(key 31) of a Type 161AYM. On a Type 161AYW,
to replace the disk assembly (key 13), bleed
assembly (key 57), O-ring (key 53), washer
(key 51) or spring (key 52), remove the groove
pin (key 54).
5. For a Type 161AYM inspect the throat seal O-ring
(key 31) and remove the machine screw (key 33).
Replace O-ring if necessary.
6. On Types 161AY and 161AYM, install the disk
assembly (key 13) and secure it with the cotter
pin (key 15). On a Type 161AYW, install the
bleed assembly (key 57), washer (key 51), O-ring
(key 53) and spring (key 52) prior to installing the
disk assembly (key 13) and securing it with the
groove pin (key 54).
7. Place backup ring (key 50) into the body (key 1)
then place the body seal O-ring (key 11) into
the body.
8. Place the diaphragm casing (key 4) on the body
(key 1). Secure the diaphragm casing to the body
with the cap screws (key 2).
Diaphragm and Spring Case Area
Use this procedure to change the control spring and
to inspect, clean or replace part in the spring case and
diaphragm assembly.
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 control
spring (key 6).
6
161 Series
2. Change the control spring (key 6) to match the
desired spring range.
3. Replace the adjusting screw (key 35).
4. Install the replacement closing cap gasket (key 25)
if necessary and reinstall the closing cap (key 22).
5. If the spring was changed, be sure to change the
stamped spring range on the nameplate.
To Disassemble and Reassemble the Diaphragm Parts
1. Remove the closing cap (key 22) and turn
adjusting screw (key 35) counterclockwise to
remove adjusting screw, bafe plate (key 56) and
control spring (key 6).
2. Remove the spring case hex nuts (key 23,
not shown), cap screws (key 24) and spring
case (key 3).
3. Remove the diaphragm (key 10) and attached
parts by tilting them so that the pusher post (key 8)
slips off the lever assembly (key 16). To separate
the diaphragm (key 10) from the attached parts,
unscrew the machine screw (key 38) from the
pusher post (key 8).
4. Inspect the pusher post (key 8) and the body seal
O-ring (key 11), replace if required.
5. Remove hex nut (key 21) to separate the
diaphragm (key 10) and attached parts.
6. To replace the lever assembly (key 16), remove
the machine screws (key 17). To replace the stem
(key 14) or access the stem seal O-ring (key 30)
also perform Body Area Maintenance procedure
steps 1 and 4 and pull the stem out of the
diaphragm casing (key 4).
7. Install the stem (key 14) into the guide insert
(key 18)and perform Body Area Maintenance
procedure 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).
9. Install the parts on the pusher post in the order
listed below:
• Pusher Post (key 8)
• Pusher Post Connector (key 40)
• Connector Seal O-ring (key 49)
• Diaphragm Head (key 7)
• Diaphragm (key 10), pattern side up
• Diaphragm Head (key 7)
• Hex Nut (key 21) — Tighten the hex nut 9 to
11 ft-lbs / 12 to 15 N•m to secure parts to the
pusher post connector (key 40)
BODY SEAL O-RING (KEY 11)
BACKUP RING (KEY 50)
BODY (KEY 1)
Figure 3. Expanded View of the Body Area
Showing the O-ring and Backup Ring Placement
• Overpressure Spring (key 39)
• Spring Holder (key 37)
• Machine Screw (key 38)
10. Insert and tighten the machine screw (key 38) with
a torque of 1 to 3 ft-lbs / 1.3 to 4.1 N•m to secure
the diaphragm parts to the pusher post (key 8).
11. Install the assembled parts in the diaphragm
casing (key 4). Make sure the lever (key 16) ts
in the pusher post (key 8) and that the holes in
the diaphragm (key 10) align with the holes in the
diaphragm casing.
12. Place the spring case (key 3) on the diaphragm
casing (key 4) so the vent assembly (key 26) is
oriented correctly and secure with the cap screws
(key 24) and hex nuts (key 23, not shown) nger
tight only.
13. Insert the control spring (key 6) into the spring
case (key 3), followed by the bafe plate (key 56)
and adjusting screw (key 35).
14. Turn the adjusting screw (key 35) clockwise until
there is enough spring (key 6) force to provide
proper slack to the diaphragm (key 10). Using a
crisscross pattern, tighten the cap screws (key 24)
and hex nuts (key 23, not shown) to 14 to
17 ft-lbs / 19 to 23 N•m of torque. To adjust the
outlet pressure to the desired setting, refer to
Startup and Adjustment section.
15. Install a replacement closing cap gasket (key 25)
if necessary and then install the closing cap
(key 22).
Parts Ordering
When corresponding with your local Sales Ofce about
this equipment, reference the equipment serial number
or FS number found on a nameplate attached to the
bonnet. When ordering replacement parts, reference
the eleven digit part number of each needed part found
in the parts list.
7
161 Series
Parts List
161 and 161EB Series Pilots
(Figures 4 through 6)
Key Description Part Number
Type 161 Pilot Parts Kit (included
are keys 4, 6, 7 and 15)
For 5 to 15 or 10 to 125 psig / 0.34 to 1.03 or
0.69 to 8.62 bar control spring range R161X000012
For 120 to 300 psig / 8.27 to 20.7 bar
control spring range R161X000022
Type 161 Pilot Parts Kit (included
are keys 4, 6, 7, 15 and 17)
For pressure loading with 5 to 15 or
10 to 125 psig / 0.34 to 1.03 or
0.69 to 8.62 bar control spring range R161X000032
Type 161M Pilot Parts Kit (included
are keys 4, 6, 7, 15, 17, 19 and 22)
For 5 to 15 or 10 to 125 psig / 0.34 to 1.03 or
0.69 to 8.62 bar control spring range R161MX00012
For 120 to 300 psig / 8.27 to 20.7 bar
control spring range R161MX00022
For pressure loading with 5 to 15 or
10 to 125 psig / 0.34 to 1.03 or
0.69 to 8.62 bar control spring range R161MX00032
Parts Kit, (included are keys 4, 6, 7 and 15)
Type 161EB, Nitrile (NBR)
5 to 200 psig / 0.34 to 13.8 bar R161X000012
200 to 350 psig / 13.8 to 24.1 bar R161X000022
Type 161EBM, Nitrile (NBR)
5 to 200 psig / 0.34 to 13.8 bar R161MX00012
200 to 350 psig / 13.8 to 24.1 bar R161MX00022
Type 161EBH Parts Kit, Nitrile (NBR)
(included are keys 4, 6, 7 ,15 and 23) R161HX00012
Type 161EBHM Parts Kit, Nitrile (NBR)
(included are keys 4, 6, 7 ,15, 19, 22 and 23) R161HMX0012
1 Body Assembly
Types 161,161EB and 161EBH
Stainless steel 1B7971X0252
Aluminum (Type 161 only) 1B7971X0292
Types 161M,161EBM and 161EBHM
Stainless steel 30B8715X012
2 Spring Case
Types 161 and 161M
Aluminum (Type 161 only) 25A6220X012
Stainless steel 28A9277X012
161EB Series, Stainless steel 27B9722X012
3 Body Plug
Aluminum (Type 161 only) 1B797509032
Stainless steel 1B7975X0052
4* Valve Plug
Nitrile (NBR) with Stainless steel stem 20B9389X052
Fluorocarbon (FKM) with Stainless steel stem 20B9389X062
6 Plug Spring, Stainless steel 1E701337022
7* Diaphragm Assembly, Diaphragm
with Stainless steel diaphragm plate See Table 4 or 5
8 Upper Spring Seat, Plated steel See Table 4 or 5
9 Control Spring See Table 4 or 5
10 Diaphragm Limiter, Stainless steel See Table 4 or 5
11 Adjusting Screw, Plated Steel See Table 4 or 5
12 Locknut
For Types 161 and 161M, Stainless steel 1A9463X0042
For 161EB Series, Carbon Steel 1D667728982
13 Machine Screw, (6 required)
Types 161 and 161M, Stainless steel steel
For 5 to 300 psi / 0.34 to 20.7 bar 1V4360X0022
For 250 to 600 psi / 17.2 to 41.4 bar T12980T0012
Key Description Part Number
13 Machine Screw, (6 required) (continued)
Type 161, Aluminum spring case 10B6189X022
Types 161EB and 161EBM, Stainless steel 1V4360T0012
Types 161EBH and 161EBHM, Plated steel T12980T0012
14 Pipe Plug
For Aluminum body, (Type 161 only), Plated steel 1A767524662
For Stainless steel body, Stainless steel
Types 161, 161EB and 161EBH 1A767535072
15 Body Plug O-ring, Nitrile (NBR) 1F113906992
16 Closing Cap
Nylon (PA)
Types 161 and 161M 23B9152X012
161EB Series 24B1301X012
Metal for pressure loading
Types 161 and 161M 1H2369X0012
Types 161EB and 161EBM 17B1406X012
17* Closing Cap Gasket, Pressure loading
for metal closing cap only, Composition
Types 161 and 161M 15A6218X012
Types 161EB and 161EBM 1C659804022
18 Type Y602-12 Vent Assembly, Plastic 27A5516X012
19* Stem Guide Seal Assembly
(Types 161M, 161EBM and 161EBHM)
Stainless steel seal and
seal retainer with Nitrile (NBR) rubber O-ring 10B8711X012
22 O-ring (Types 161M, 161EBM and 161EBHM),
Nitrile (NBR) 10A0904X012
23 O-ring (Types 161, 161M and 161EBHM),
Nitrile (NBR) 10A7777X012
26 Gauge (Type 161EB), Stainless steel 11B9639X032
38 Lower Spring Seat, (Types 161EB and 161EBM)
Plastic 18B1248X012
Types 161AY, 161AYM and 161AYW
Pilots (Figure 7)
Key Description Part Number
Parts Kit (included are keys 10, 11, 12, 13, 15,
30, 31, 33, 48 and 49) RY690AX0012
1 Body, Cast iron 1E987119012
2 Cap Screw, Zinc-plated steel (2 required) 1C856228992
3 Spring Case Assembly, Ductile iron 13B0109X042
4 Lower Casing, Ductile iron
Type 161AY 17B5352X012
Types 161AYM and 161AYW 47B3063X012
5 Orifice, Stainless steel
3/32 in. / 2.4 mm 0R044135032
1/4 in. / 6.3 mm 0B042035032
1/8 in. / 3.2 mm 1A936735032
6 Control Spring, Steel See Table 1
7 Diaphragm Head, Stainless steel (2 required) 17B9723X032
8 Pusher Post, Stainless steel 27B5354X012
10* Diaphragm
Nitrile (NBR) 37B9720X012
Fluorocarbon (FKM) 23B0101X052
11* Body Seal
Nitrile (NBR) 1H993806992
Fluorocarbon (FKM) 1H9938X0012
12* Insert Seal
Nitrile (NBR) 1B885506992
Fluorocarbon (FKM) 1B8855X0012
13* Disk Assembly
Types 161AY and 161AYM
Nitrile (NBR) 1C4248X0202
Fluorocarbon (FKM) 1C4248X0052
Type 161AYW
Nitrile (NBR) 14A0632X012
*Recommended Spare Part
8
161 Series
Table 4. Types 161 and 161M Pilot Part Numbers (keys 7, 8, 9, 10 and 11)
KEY PART NAME
Diaphragm Assembly, Standard, Nitrile (NBR) 17B9055X022 17B9055X022 17B9055X032
7
8 Upper Spring Seat 1B798525062 1B798525062 1K155828982
9 Spring 1E392527022 1K748527202 15A9258X012
10 Diaphragm Limiter - - - - - - - - - - - - - - - - - - - - - - 10B4407X012
11 Adjusting Screw 10B6190X012 10B7192X012 10B6190X012
Diaphragm Assembly, Pressure-Loaded, Nitrile (NBR) 17B9055X012 17B9055X012 - - - - - - - - - - -
Diaphragm Assembly, Standard, Fluorocarbon (FKM) 17B9055X062 17B9055X062 17B9055X052
Diaphragm Assembly, Pressure-Loaded, Fluorocarbon (FKM) 17B9055X042 17B9055X042 - - - - - - - - - - -
Table 5. 161EB Series Pilot Part Numbers (keys 7, 8, 9, 10 and 11)
OUTLET (CONTROL) PRESSURE RANGE AND SPRING COLOR CODE
KEY PART NAME
Diaphragm Assembly,
Standard, Nitrile (NBR)
Diaphragm Assembly,
Pressure-Loaded,
7
8 Upper Spring Seat 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012
9 Spring 17B1260X012 17B1262X012 17B1259X012 17B1261X012 17B1263X012 17B1264X012 17B1263X012 17B1264X012
10 Diaphragm Limiter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10B4407X012 22B0590X012 22B0590X012
11 Adjusting Screw 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3080X012 10B3080X012 10B3080X012
Nitrile (NBR)
Diaphragm Assembly,
Standard,
Fluorocarbon (FKM)
Diaphragm Assembly,
Pressure-Loaded,
Fluorocarbon (FKM)
5 to 15 psig /
0.34 to 1.03 bar,
White
17B9055X022 17B9055X022 17B9055X022 17B9055X022 17B9055X022 17B9055X032 12B0703X012 12B0703X012
17B9055X012 17B9055X012 17B9055X012 17B9055X012 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
17B9055X062 17B9055X062 17B9055X062 17B9055X062 17B9055X062 17B9055X052 12B0702X022 - - - - - - - - - - -
17B9055X042 17B9055X042 17B9055X042 17B9055X042 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
10 to 40 psig /
0.69 to 2.76 bar,
Yellow
30 to 75 psig /
2.07 to 5.17 bar,
Black
OUTLET (CONTROL) PRESSURE RANGE AND SPRING COLOR CODE
5 to 15 psig /
0.34 to 1.03 bar, Yellow
70 to 140 psig /
4.83 to 9.65 bar,
Green
130 to 200 psig /
8.96 to 13.8 bar,
10 to 125 psig /
0.69 to 8.62 bar, Red
200 to 350 psig /
Blue
13.8 to 24.1 bar,
Red
120 to 300 psig /
8.27 to 20.7 bar, Green
250 to 450 psig /
17.2 to 31.0 bar,
Blue
400 to 700 psig /
27.6 to 48.3 bar,
Red
Types 161AY, 161AYM and 161AYW
Pilots (Figure 7) (continued)
Key Description Part Number
14 Stem, Stainless steel
Types 161AY and 161AYM 17B3423X012
Type 161AYW 27B5279X012
15* Cotter Pin (Types 161AY and 161AYM only),
Stainless steel 1A866537022
16 Lever Assembly, Stainless steel 1B5375000B2
17 Machine Screws, Stainless steel (2 required) 19A7151X022
18 Guide Insert, Stainless steel
Types 161AY and 161AYM 27B4028X022
Type 161AYW 27B4029X012
21 Hex Nut, Steel 1A354024122
22 Closing Cap
Plastic (standard) T13524T0062
Steel 1E422724092
23 Hex Nut, Steel (8 required) 1A352724122
24 Cap Screw, Steel (8 required) 1A352524052
25 Closing Cap Gasket, for steel closing cap,
Neoprene (CR) 1P753306992
26 Vent Assembly
Spring Case Down (Type Y602-1) 17A6570X012
Spring Case Up (Type Y602-11) 17A5515X012
Spring Case Sideways (Type Y602-12) 27A5516X012
30* Stem Seal O-ring (Type 161AYM only)
Nitrile (NBR) 1H2926G0012
Fluorocarbon (FKM) 1H2926X0022
31* Throat Seal (Type 161AYM only)
Nitrile (NBR) 1D682506992
Fluorocarbon (FKM) 1D6825X0012
33* Machine Screw (Type 161AYM only)
Stainless steel 18A0703X022
*Recommended Spare Part
Key Description Part Number
35 Adjusting Screw, Cast Zinc 1B537944012
37 Spring Holder, Steel 1R982025072
38 Machine Screw, Stainless steel 10B6189X022
39 Overpressure Spring, Stainless steel 1B541327022
40 Pusher Post Connector, Stainless steel 27B7982X012
46 Nameplate - - - - - - - - - - 47 Drive Screw, Stainless steel (2 required) 1A368228982
48* Post Seal
Nitrile (NBR) 1D687506992
Fluorocarbon (FKM) 1N430406382
49* Connector Seal
Nitrile (NBR) 13A1584X012
Fluorocarbon (FKM) 13A1584X022
50 Backup Ring, Stainless steel 18B3446X012
51 Washer, (Type 161AYW only)
Carbon steel plated 14A0633X012
52 Spring, (Type 161AYW only)
302 Stainless steel 1U550637022
53* O-ring, (Type 161AYW only)
Nitrile (NBR) 1D191706992
54* Groove Pin, (Type 161AYW only)
303 Stainless steel 1D799138992
55 Restriction (Types 161AY and 161AYM only),
Brass 1D483514012
56 Baffle Plate (Types 161AY and 161AYM only),
Stainless steel 11B4292X012
57* Bleed Assembly, (Type 161AYW only)
303 Stainless steel/Nitrile (NBR) 14A0636X012
9
161 Series
11 16
12
17
8
9
7
13
2
18
10
1
23
4
15
3
6
TYPE 161
32B0707 32B0708_D
APPLY LUBRICANT
PARTS NOT SHOWN: KEYS 14, 28 AND 34
APPLY LUBRICANT
PARTS NOT SHOWN: KEY 25
Figure 4. Type 161 Monitor Pilot Assembly
11
12
8
9
7
13
23
19
22
4
6
TYPE 161M
Figure 5. Type 161M Monitor Pilot Assembly
16
17
2
18
10
1
15
3
11
12
8
9
38
13
7
4
6
37B1208
APPLY LUBRICANT
PARTS NOT SHOWN: KEYS 14, 28 AND 34
TYPE 161EB
16
19
1
17
22
2
37B2946_B
TYPE 161EBM
18
19
1
10
23
15
1
22
3
37B1213
TYPE 161EBHM
10
Figure 6. 161EB Series Monitor Pilot Assemblies
161 Series
27
55
10
48
4
49
8
40
7
16
17
14
39
6
56
25
38
22
37
35
21
3
47B8950_B
2
18
11
50
1
TYPE 161AY
10
48
26
47
46
24
49
49
16
17
14
18
11
50
30
12
15
13
5
55
4
8
7
1
TYPE 161AYM
39
6
56
25
38
22
37
35
21
3
12
31
33
15
13
5
47B8951_B
APPLY LUBRICANT
PARTS NOT SHOWN: KEY 23
OUTER COMPONENTS
51
57
53
54
52
47B3689B
TYPE 161AYW
Figure 7. 161AY Series Monitor Pilot Assembly
11
161 Series
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D103232X012 © 2008, 2018 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 08/18.
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