Emerson Fisher EZL User manual

Type EZL
Instruction Manual
D103091X012
August 2019
Type EZL Pressure Reducing Regulator for
Low Pressure Applications
Introduction
Scope of the Manual
This manual provides installation, startup,
maintenance and parts ordering information for the
Type EZL pressure reducing regulator. Information on
other equipment used with this regulator is found in
separate manuals.
Product Description
Type EZL regulators are accurate pilot-operated,
pressure balanced and soft seated regulators. They
are designed for use in natural gas distribution
applications such as district regulating stations and
commercial/industrial meter sets. They provide low
differential, smooth, reliable operation, tight shutoff and
long life.
Figure 1. Type EZL Pressure Reducing Regulator

MAIN VALVE BODY SIZE MAIN VALVE BODY MATERIAL END CONNECTION STYLE STRUCTURAL DESIGN RATING(1)
2, 3 and 4 in. /
DN 50, 80 and 100
WCC Steel
NPT(2) or SWE(2) 1500 psig / 103 bar
CL150 RF 290 psig / 20.0 bar
CL300 RF 750 psig / 51.7 bar
CL600 RF or BWE 1500 psig / 103 bar
Cast iron NPT(2) 400 psig / 27.6 bar
CL125 FF 200 psig / 13.8 bar
1. Structural design rating is the rating for the main valve body. The Type EZL complete assembly is limited to 290 psig / 20 bar.
2. Available only on 2 in. / DN 50 body.
Table 1. Main Valve Body Sizes, End Connection Styles and Body Ratings
Table 2. Outlet Pressure Ranges
PILOT TYPE OUTLET CONTROL PRESSURE RANGE SPRING COLOR SPRING PART NUMBER
psig bar
6352 2 to 10 0.14 to 0.69 Black 14A9673X012
6353 3 to 40
35 to 125
0.21 to 2.8
2.4 to 8.6
Yellow
Red
1E392527022
1K748527202
6354L(1)
6354M(2)
6354H
85 to 200
175 to 220
200 to 285
5.9 to 13.8
12.1 to 15.2
13.8 to 19.7
Blue
Blue
Green
1L346127412
1L346127412
15A9258X012
61L
0.25 to 2
1 to 5
2 to 10
5 to 15
10 to 20
0.02 to 0.14
0.07 to 0.34
0.14 to 0.69
0.34 to 1.0
0.69 to 1.4
Red
Yellow
Blue
Brown
Green
1B886327022
1J857827022
1B886427022
1J857927142
1B886527022
61HP
15 to 45
35 to 100
100 to 285
1.0 to 3.1
2.4 to 6.9
6.9 to 19.7
Yellow
Blue
Red
1E392527022
1D387227022
1D465127142
161EBM
5 to 15
10 to 40
30 to 75
70 to 140
130 to 200
200 to 350
0.34 to 1.0
0.69 to 2.8
2.1 to 5.2
4.8 to 9.6
9.0 to 13.8
13.8 to 24.1
White
Yellow
Black
Green
Blue
Red
17B1260X012
17B1262X012
17B1259X012
17B1261X012
17B1263X012
17B1264X012
1. Without diaphragm limiter.
2. With diaphragm limiter.
2
Type EZL
Specifications
The Specifications section lists the specifications for Type EZL pressure reducing regulator. Factory specifications
for specific regulator constructions are stamped on the nameplate fastened to either the main actuator or the pilot
spring case.
Available Configuration
Type EZL: Pilot-operated pressure reducing
regulator for low to high outlet pressure
Body Sizes, End Connection Styles and
Pressure Ratings(1)
See Table 1
Maximum Pressures(1)
Inlet and Outlet (Design): 290 psig / 20 bar
Emergency (Design Casing): 290 psig / 20 bar
Operating Di󰀨erential: 290 psid / 20 bar d
Outlet Pressure Ranges
See Table 2
Minimum Differential Pressure(1)
Process Temperature Capabilities(1)
Nitrile (NBR) Version:
-20 to 180°F / -29 to 82°C
Fluorocarbon (FKM) Version:
0 to 180°F / -18 to 82°C
Options
• Travel Indicator
• Integral Type OS2 Slam-shut Device
TRIM, PERCENT
OF CAPACITY
MINIMUM DIFFERENTIAL
FOR FULL STROKE
2 In. /
DN 50
3 and 4 In. /
DN 80 and 100
100
80
50
30
2.9 psid / 0.204 bar d
2.9 psid / 0.204 bar d
3.0 psid / 0.207 bar d
3.4 psid / 0.234 bar d
2.9 psid / 0.204 bar d
3.1 psid / 0214 bar d
3.2 psid / 0.221 bar d
3.5 psid / 0.241 bar d
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.

E0944
June 2015 Type EZL
Type EZL with 6350 Series Pilot and Type P590 Pilot Supply Filter
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Principle of Operation
Single-Pilot Regulator
The pilot-operated Type EZL (Figure 2 or 3) uses inlet
pressure as the operating medium, which is reduced
through pilot operation to load the actuator diaphragm.
Outlet pressure opposes loading pressure in the
actuator and also opposes the pilot control spring.
When outlet pressure drops below the setting of
the pilot control spring, pilot control spring force on
the pilot diaphragm thus opens the pilot valve plug,
providing additional loading pressure to the actuator
diaphragm. This diaphragm loading pressure opens
the main valve plug, supplying the required flow to the
downstream system. Any excess loading pressure on
the actuator diaphragm escapes downstream through
the bleed restriction in the pilot.
When the gas demand in the downstream system
has been satisfied, the outlet pressure increases.
The increased pressure is transmitted through
the downstream control line and acts on the pilot
E0944_06/2015
Figure 2. Type EZL with Type 6352 Pilot
diaphragm. This pressure exceeds the pilot spring
setting and moves the diaphragm, closing the orifice.
The loading pressure acting on the main diaphragm
bleeds to the downstream system through a bleed
restriction in the pilot.
Monitoring Systems
Monitoring regulation is overpressure protection by
containment, therefore, there is no relief valve to vent
to the atmosphere. When the working regulator fails
to control the pressure, a monitor regulator installed
in series, sensing the downstream pressure, goes
into operation to maintain the downstream pressure
at a slightly higher than normal pressure. During an
overpressure situation, monitoring keeps the customer
on line. Also, testing is relatively easy and safe. To
perform a periodic test on a monitoring regulator,
increase the outlet set pressure of the working
regulator and watch the outlet pressure to determine if
the monitoring regulator takes over at the appropriate
outlet pressure.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
P590 SERIES PILOT
SUPPLY FILTER
“D” PORT
SENSE
PRESSURE
TYPE EZL MAIN VALVE
“A” PORT
INLET PRESSURE
“C” PORT
LOADING PRESSURE
TYPE 6352 PILOT
3
Type EZL

Type EZL with Type 61L Pilot
E0959
August 2015 Type EZL
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
Wide-Open Monitoring Systems (Figure 4)
There are two types of wide-open monitoring systems:
upstream and downstream. The difference between
upstream and downstream monitoring is that the
functions of the regulators are reversed. Systems can
be changed from upstream to downstream monitoring
and vice-versa, by simply reversing the setpoints
of the two regulators. The decision to use either an
upstream or downstream monitoring system is largely
a matter of personal preference or company policy.
In normal operation of a wide-open configuration,
the working regulator controls the system’s outlet
pressure. With a higher outlet pressure setting, the
monitor regulator senses a pressure lower than its
setpoint and tries to increase outlet pressure by going
wide-open. If the working regulator fails, the monitoring
regulator assumes control and holds the outlet
pressure at its outlet pressure setting.
When using a 6350 Series Pilot on the monitoring
regulator, it should be equipped with a pilot supply
regulator set to 5 psig / 0.34 bar plus the monitor
minimum differential pressure above the working
TYPE EZL MAIN VALVE
E0959_08/2015
Figure 3. Type EZL with Type 61L Pilot
SENSE
PRESSURE
regulator pressure setting. Since the pilot on the
monitoring regulator is wide-open during normal
operation, the pilot supply regulator prevents
differential check valve chatter on the monitoring
regulator pilot.
Working Monitoring Regulators (Figure 5)
In a working monitoring system, the upstream
regulator requires two pilots and it is always the
monitoring regulator. The additional pilot permits
the monitoring regulator to act as a series regulator
to control an intermediate pressure during normal
operation. In this way, both units are always operating
and can be easily checked for proper operation.
In normal operation, the working regulator controls
the outlet pressure of the system. The monitoring
regulator’s working pilot controls the intermediate
pressure and the monitoring pilot senses the system’s
outlet pressure. If the working regulator fails, the
monitoring pilot will sense the increase in outlet
pressure and take control.
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
LOADING PRESSURE
LOADING
PRESSURE
INLET
PRESSURE
TYPE 61L PILOT
P590 SERIES PILOT
SUPPLY FILTER
4
Type EZL

Type EZL Downstream Wide-Open Monitor
E0948
November 2015 Type EZL
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PILOT SUPPLY PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
LOADING PRESSURE
Note
The working regulator must be rated
for the maximum allowable operating
pressure of the system because this will
be its inlet pressure if the monitoring
regulator fails. Also, the outlet pressure
rating of the monitoring pilot and any
other components that are exposed to
the intermediate pressure must be rated
for full inlet pressure.
Working monitor installations require a Type EZL
main valve with a working pilot and a monitoring pilot
for the upstream regulator and a Type EZL with the
appropriate pilot for the downstream regulator.
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
the limits given in the Specification
section and on the appropriate
nameplate or where conditions exceed
any rating of the adjacent piping or
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 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.
All Installations
A Type EZL regulator bleeds no gas to atmosphere
during normal operation, making it suitable for
installation in pits and other enclosed locations without
Figure 4. Downstream Wide-Open Monitor System
E0948_08/2015 TYPE EZL MAIN VALVE TYPE EZL MAIN VALVE
TYPE 67C PILOT
SUPPLY REGULATOR
P590 SERIES
PILOT SUPPLY
FILTER
TYPE 6352 PILOT
P590 SERIES PILOT
SUPPLY FILTER
TYPE 6352 PILOT
Type EZL Downstream Wide-Open Monitor
E0948
November 2015 Type EZL
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
LOADING PRESSURE
PILOT SUPPLY PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
LOADING PRESSURE
5
Type EZL

elaborate venting systems. This regulator also can be
installed in pits subject to flooding by venting the pilot
spring case above the expected flood level so that the
pilot diaphragm is exposed to atmospheric pressure.
1. Only personnel qualified through training and
experience should install, operate and maintain a
regulator. Before installation, make sure that there
is no damage to or debris in the regulator. Also,
make sure that all tubing and piping are clean
and unobstructed.
2. Install the regulator so that the flow arrow on the
main valve matches the flow direction of process
fluid through the regulator. The EZL Series may be
installed in any position, but it is normally installed
in a horizontal pipeline with the pilot or pilots above
the body.
3. Apply pipe compound to the external pipeline
threads before installing a regulator with threaded
end connections. Use gaskets between pipeline
and regulator flanges when installing a regulator
with flanged end connections. When installing
buttweld end connections, remove trim before
welding and make sure to use approved welding
practices. Use approved piping procedures when
installing the regulator.
WARNING
!
A regulator may vent some gas to
the atmosphere. In hazardous or
flammable gas service, vented gas
may accumulate, causing personal
injury, death or property damage
due to bursting of pressure-retaining
parts. 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.
Figure 5. Working Monitoring System Operational Schematic
E0946_08/2015
TYPE EZL MAIN VALVE TYPE EZL MAIN VALVE
TYPE 6352 PILOT
Type EZL Working Monitor
E0946
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
August 2015 Type EZL
INTERMEDIATE PRESSURE
LOADING PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
LOADING PRESSURE
Type EZL Working Monitor
E0946
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
August 2015 Type EZL
INTERMEDIATE PRESSURE
LOADING PRESSURE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
LOADING PRESSURE
P590 SERIES PILOT
SUPPLY FILTER
TYPE 6352 PILOT
P590 SERIES
PILOT SUPPLY
FILTER
161EB SERIES PILOT
6
Type EZL

4. Pilots have a 1/4 in. 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 to the spring case
connection. The piping or tubing 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 piping or tubing
so that the vent is protected from condensation,
freezing or substances that may clog it.
CAUTION
To avoid freezeup 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.
5. Run a 3/8 in. / 9.5 mm outer diameter or larger
pilot supply line from the upstream pipeline to the
filter inlet as shown in Figure 3, bushing the line
down to fit the 1/4 in. NPT filter 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 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.
6. Attach a 1/2 in. / 13 mm piping or tubing
downstream control line to the 1/2 in. 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 shutoff the control pressure when using
the bypass.
7. If a quick acting solenoid is to be installed
downstream of a regulator, the regulator and
solenoid should be located as far apart as
practical. This will maximize the gas piping
volume between the regulator and solenoid and
improve the regulator response to quick changing
flow rates.
8. Consult the appropriate instruction manual for
installation of an optional pneumatic or electric
remote control drive unit. For optional remote
pneumatic loading of a 6350 or 61 Series pilot,
make the loading piping connections to the
1/4 in. NPT vent connection.
Wide-Open Monitor Regulator (Figure 4)
1. Follow the procedures in the All Installations
section and then continue with step 2 of
this section.
2. Connect the control line of the wide-open
monitoring regulator to the downstream piping
near the working regulator control line connection.
During normal operation, the wide-open regulator
stands wide-open with the pressure reduction
being taken across the working regulator. Only
in case of working regulator failure does the
wide-open monitoring regulator take control at its
slightly higher setting.
Regardless of which regulator is used as the monitor,
it should be equipped with a pilot supply regulator
set to limit the pilot supply pressure to 10 to 15 psig /
0.69 to 1.0 bar above control pressure. Since the
pilot on the monitoring regulator is wide-open during
normal operation, the pilot supply regulator is used
to prevent di󰀨erential pressure relief valve chatter on
the monitoring regulator pilot.
Working Monitor Regulator (Figure 5)
1. Follow the procedure in the All Installations section
and then continue with step 2 of this section.
2. Attach 3/8 in. / 9.5 mm tubing (for Type 161EBM)
downstream control line to the control line (sense)
connection on the pilot. Connect the other end of
the control line to the pipeline downstream of the
downstream working regulator. Do not attach the
control line near any elbow, swage, block valve or
any other location that might cause turbulence.
3. Apply pilot sense pressure by connecting the
outlet of the monitor pilot to the inlet of the working
monitor pilot.
Startup and Adjustment
Pre-startup Considerations
Each regulator is factory-set for the outlet pressure
specified on the order. If no setting was specified,
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:
7
Type EZL

• 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.
Startup
1. Make sure all block valves, vent valves and control
line valve(s) are closed.
2. Back out the pilot adjusting screw(s).
3. Slowly open the valves in the following order:
a. Pilot supply and control line valve(s), if used.
b. Inlet block valves.
4. Crack open the outlet block valve or bypass valve
to allow minimum flow.
5. For a single regulator, set the pilot to the
desired outlet (control) pressure according to the
Pilot Adjustment procedure.
For a wide-open downstream monitor
installation, adjust the upstream working pilot until
intermediate pressure is higher than the desired
setpoint of the monitor pilot. Adjust the downstream
monitoring pilot to the desired monitoring takeover
pressure. Reduce the upstream pilot to the normal
outlet pressure setting.
For a wide-open upstream monitor installation,
adjust the downstream working pilot to a setpoint
higher than the setpoint of the monitor pilot. Adjust the
upstream monitoring pilot to the desired monitoring
takeover pressure. Reduce the downstream pilot to
the normal outlet pressure setting.
For a working monitor installation, back out the
adjusting screw of the downstream pilot. Adjust the
upstream working pilot to the desired intermediate
pressure setting. Back out the adjusting screw of
the upstream monitor pilot (Type PRX/125). Drive in
the adjusting screw of the downstream pilot. Adjust
the upstream monitor pilot to the desired setpoint.
Establish final desired downstream pressure by
adjusting the downstream pilot.
6. After adjusting the pilot(s) to the desired pressure
setting(s), slowly open the downstream block
valve wide-open.
7. Close the bypass valve, if used.
Pilot Adjustment
The adjustment of the regulators is performed by
means of the pilot adjustment screw, which varies
the compression of the control spring. Adjustment is
performed while the regulator is in in operation with
the aid of a pressure gauge to monitor downstream
pressure. The shutoff valve downstream of the
regulator must not be completely closed, as it
is necessary that a small quantity of gas flows
downstream to allow the outlet side to vent, when it is
necessary to lower the pressure.
Remove closing cap, if necessary. Loosen the
locknut. Turn the adjusting screw into the spring case
(clockwise) to increase the downstream pressure.
Turn the adjusting screw out of the spring case
(counterclockwise) to decrease the downstream
pressure. When the desired setpoint adjustment is
completed and verified, tighten the locknut to lock the
adjusting screw in position. Replace the pilot closing
cap, if necessary.
Adjusting the monitor regulator (Figure 4) is the same
as adjusting the main regulator. Monitor setpoints
are set slightly higher than the main regulator. The
monitor pressure setting should be adjusted so it is at
minimum two times the pilot accuracy band pressure
above the working regulator pressure setting.
Shutdown
CAUTION
If the pilot bleed control line pressure is
shutdown first, 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 blow down.
2. Slowly 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.
8
Type EZL

Maintenance
The regulator parts are subject to normal wear
and must be inspected periodically and replaced
as necessary. The frequency of inspection and
replacement depends on the severity of service
conditions and on applicable federal, state and local
codes and regulations.
WARNING
!
To avoid personal injury or property
damage from sudden release of pressure,
isolate the regulator from the pressure
system and release all pressure from the
pilot and main valve before performing
maintenance operations.
CAUTION
When disassembling the upper and
lower actuator, always remove the long
cap screws (key 39) last to allow spring
tension force to be released in a slow
and controlled manner.
Use proper lifting techniques, when
lifting the upper and lower actuator
casings (keys 11 and 5) off the Type EZL
body (key 1). The 2 in. / DN 50 actuator
assembly weighs more than 40 lbs / 18 kg.
Type EZL (Figure 7)
Seat Maintenance
1. Make a mark on the lower actuator casing (key 5),
intermediate flange (key 25) and body (key 1) to
indicate proper alignment.
2. Remove stud nuts (key 26).
CAUTION
Use proper care in moving actuator to
ensure no damage occurs to the pins or
actuator casings.
3. Carefully lift the actuator assembly (keys 11 and 5)
off the body (key 1).
4. Remove O-ring (key 34) from lower actuator casing
(key 5). Inspect the O-ring for damage or wear and
replace if necessary. Lightly lubricate O-ring before
placing on lower actuator casing (key 5).
5. Remove the hex socket cap screws (key 33) and
spring lock washers (key 32). Lift off the disk holder
assembly (key 30) and disk retainer (key 31).
6. Remove the O-ring (key 29). Inspect for damage
or wear and replace if necessary. Lightly lubricate
O-ring before placing in the sleeve adaptor (key 27).
7a. On the 2 and 3 in. / DN 50 and 80 sizes remove the
seat ring (key 2), spring washer (key 72) and O-ring
(key 34) (see Figure 7, Detail A.2). Inspect the
O-ring for damage or wear, replace if necessary.
7b. On the 4 in. / DN 100 size, the seat ring (key 2) can
be moved out of the way and the o-ring (key 75)
can be removed without removing the intermediate
flange (key 25). For easy access to the o-ring
(key 75), the intermediate flange (key 25) can be
removed by following steps 4 through 6 in the
Intermediate Flange O-ring Maintenance section.
Inspect the O-ring (key 75) for damage or wear,
replace if necessary.
8a. For the 2 and 3 in. / DN 50 and 80 sizes reinstall
the spring washer (key 72) with the inside edge
pointing up. Lightly lubricate O-ring (key 34) before
placing on top of the spring washer (key 72) in the
body (key 1).
8b. For the 4 in. / DN 100 size lightly lubricate the
O-ring (key 75) and place it in the body (key 1).
9. Set the seat ring (key 2) back in the body (key 1)
with the curved side down and the seat edge up.
10. Place the disk holder assembly (key 30) and disk
retainer (key 31) on the sleeve adaptor (key 27).
11. Insert the spring lock washers (key 32) and hex
socket cap screws (key 33) and tighten. See
Torque Specification table for proper torque.
12. Lubricate surface between lower casing and
intermediate flange. Carefully lift the upper
actuator casing and lower actuator casing
assembly (keys 11 and 5) and place on the body
(key 1). Secure with stud nuts (key 26). See
Torque Specification table for proper torque.
Intermediate Flange O-ring Maintenance
1. Make a mark on the lower actuator casing
(key 5), intermediate flange (key 25) and body
(key 1) to indicate proper alignment.
2. Remove stud nuts (key 26).
3. Carefully lift the upper actuator casing and lower
actuator casing assembly (keys 11 and 5) off the
body (key 1).
4. Remove cap screws (key 6).
9
Type EZL

5. Lift off intermediate flange (key 25).
6. Remove O-ring (key 7). Inspect the O-ring for
damage or wear and replace if necessary. Lightly
lubricate O-ring before placing in the body (key 1).
7. Replace the intermediate flange (key 25), make
sure to position the stud bolt (key 24) holes on
the outsides of the body (key 1). Secure with cap
screws (key 6). See Torque Specification table for
proper torque.
8. Lubricate the surface between the lower casing
and the intermediate flange. Reinstall actuator
assembly to body.
Actuator Assembly Maintenance
1. Make a mark on the upper actuator casing
(key 11), lower actuator casing (key 5),
intermediate flange (key 25) and body (key 1) to
indicate proper alignment.
2. Remove travel indicator assembly, if present,
by loosening the travel indicator fitting (key 56)
and lifting out the indicator assembly. Refer
to Travel Indicator Maintenance section for
maintenance procedure.
3. Remove cap screws (key 21), washers (key 22)
and hex nuts (key 23). Remove all the short
cap screws first, then evenly remove the two
long cap screws (key 39) and brackets (key 35).
Take care to balance the upper actuator casing
while removing the spring tension. Carefully lift
the upper actuator casing (key 11) off the lower
actuator casing (key 5). Remove spring (key 13).
4. Remove the hex socket cap screws (key 16).
Lift off the diaphragm (key 20) and the inlet plate
(key 18). Remove O-rings (keys 15 and 17).
Inspect the diaphragm and O-rings for damage or
wear and replace if necessary.
5. Inspect the upper actuator casing (key 11),
O-ring (key 9), anti-friction split rings (key 8) and
anti-friction ring (key 4) for damage or wear. If
damaged, remove the O-ring and split rings and
replace with new parts. Lightly lubricate the O-ring
and split rings. Place the split rings in the body
first, then slide the O-ring between the split rings.
6. Remove hex nuts (key 26) from the stud bolts
(key 24). Lift off the lower actuator casing (key 5).
Remove the hex socket cap screws (key 33) and
spring lock washers (key 32). Lift off the disk holder
assembly (key 30) and disk retainer (key 31).
7. Slide the sleeve (key 14) out of the lower actuator
casing (key 5) and slide the outlet plate (key 19)
off of the sleeve. Check the sleeve for scratches,
burrs or other damage and replace if necessary.
8. Inspect the lower actuator casing (key 5), O-ring
(key 9), anti-friction split rings (key 8) and
anti-friction ring (key 4) for damage or wear. If
damaged, remove the O-ring and split rings and
replace with new parts. Lightly lubricate the O-ring
and split rings. Place the split rings in the body
first, then slide the O-ring between the split rings.
9. Slide the outlet plate (key 19) onto the sleeve
(key 14) and slide the sleeve into the lower actuator
casing (key 5). Place the disk holder (key 30)
and disk retainer (key 31) on the sleeve adaptor
(key 27). Insert the spring lock washers (key 32)
and hex socket cap screws (key 33) and tighten.
See Torque Specification table for proper torque. If
seat was removed, make sure to reinstall.
10. Lightly lubricate the O-rings (keys 15 and 17) and
the inner and outer diaphragm (key 20) edges.
Make sure O-rings (keys 15 and 17) are correctly
positioned. Place the inlet plate (key 18) and the
diaphragm (key 20) on the sleeve (key 14). Insert
and tighten the hex socket cap screws (key 16).
See Torque Specification table for proper torque.
11. Lubricate surface between lower casing and
intermediate flange. Carefully lift the lower actuator
casing assembly (key 5) and place on the body
(key 1). Take care to match up the alignment marks.
Table 3. Torque Specications
TORQUE SPECIFICATIONS, FT-LBS / N•m
Body Size
Indicator Fitting
(key 56) or
Plug (key 38)
Stud Nuts
(key 26)
Socket Head Cap
Screws (key 16)(1)(2)
Cap Screws
(keys 21 and 39)
Cap Screws
(key 6)
Socket Head Cap
Screws (key 33)(1)
2 in. / DN 50 10 to 15 / 15 to 20 45 to 50 / 60 to 70 55 to 60 / 75 to 80 35 to 45 / 50 to 60 50 to 60 / 70 to 80 55 to 60 / 75 to 80
3 and 4 in. /
DN 80 and 100
10 to 15 /
15 to 20
80 to 95 /
110 to 130
90 to 100 /
120 to 135
31 to 34 /
42 to 46
70 to 95 /
95 to 130
80 to 90 /
110 to 120
1. Socket head cap screw (keys 16 and 33) torque specifications are given in in-lbs.
2. Apply torque to each screw in star pattern, 5 complete rounds.
10
Type EZL

Secure with stud bolts and nuts (keys 24 and 26).
See Torque Specification table for proper torque.
12. Lightly lubricate the spring (key 13) and place on
the inlet plate (key 18).
13. Carefully place the upper actuator casing (key 11)
on the lower actuator casing (key 5). Take care to
match up the alignment marks. Insert the two long
cap screws (key 39) and brackets (key 35) 180°
apart and away from flanges. Place the washers
(key 22) and hex nuts (key 23) on the long cap
screws and evenly tighten. Using proper bolting
techniques, install remaining small cap screws
(key 21), washers and hex nuts. See Torque
Specification table for proper torque.
14. Place travel indicator assembly in the upper
actuator casing (key 11), if present and tighten the
travel indicator fitting (key 56).
Type EZL Travel Indicator Maintenance
A new and improved version of the travel indicator
has been phased in during 2013. The new version
improves the O-ring seal to minimize leakage and
extend service life. The components of the legacy and
new versions are not interchangeable. If maintenance
is performed on the travel indicator, it is recommended
to replace the entire travel indicator assembly with
the new version. Part numbers for the assemblies are
shown in the parts list. Figure 6 shows the difference
between the designs. The spare parts kits will support
either design. Take care to use the correct O-ring
(key 12A or 12B) when performing maintenance, see
parts list for the appropriate part number.
1. Remove plastic travel indicator cover (key 53).
2. Loosen travel indicator bushing (key 55) and remove
it by sliding it over the travel indicator stem (key 54).
3. Remove indicator fitting (key 56) and inspect O-ring
(key 70). Remove O-ring (key 12B) and back-
up rings (key 76). Replace and lubricate O-ring
if damaged. Pull up on the travel indicator stem
(key 54) to force the spring collet (key 57) out of the
diaphragm head groove. Examine these parts and
the stem for wear and replace if necessary.
4. Insert the travel indicator stem (key 54) and spring
collet (key 57) back into the diaphragm head
groove. Replace the indicator fitting (key 56) and
O-ring (key 70) and tighten with a referenced torque
of 20 ft-lbs / 27.1 N•m.
5. Lubricate the O-ring (key 12B) and backup rings
(key 76, 2 required). Place one back-up ring on
the stem (key 54) followed by the O-ring and then
the other back-up ring. Push into groove of the
indicator fitting (key 56).
Slide the travel indicator bushing (key 55) over
the travel indicator stem (key 54) and tighten
firmly in place with a torque of 3.7 ft-lbs / 5.0 N•m.
6. Replace the travel indicator cover (key 53) and
tighten firmly in place.
Pilot Maintenance
Types 6352 through 6354M Pilots
Perform this procedure if changing the control spring
for one of a di󰀨erent range or if inspecting, cleaning or
replacing any other pilot parts. Pilot part key numbers
are referenced in Figure 8.
Note
The body (key 1) may remain on the pipe
nipple (key 21, Figure 8 or key 24, Figure 9)
unless the entire pilot is replaced.
1. To gain access to the diaphragm assembly (key 5),
diaphragm limiter (key 23) if used, control spring
(key 6), restriction (key 22), stem guide (key 8)
or spring seat (key 7), remove the closing cap
(key 11), loosen the locknut (key 10) and turn the
adjusting screw (key 9) counter clockwise until
compression is removed from the spring. Remove
the machine screws (key 14) and separate the
body from the spring case (key 2).
2. Inspect the removed parts and replace as
necessary. Make sure the restriction and the
registration hole in the body are free from debris.
After assembly, make sure of the proper control
spring setting according to the Startup section and
re-mark the spring case if necessary.
3. To replace the valve plug (key 4) or bellows
O-ring (key 17), remove the body plug (key 3)
and body plug gasket (key 12). Be careful to
keep the bellows assembly (key 16) from falling
out and possibly getting lost while removing the
valve plug. Inspect the removed parts and replace
as necessary. Make sure the valve plug seating
surfaces are free from debris.
11
Type EZL

61 Series Pilot
Perform this procedure if changing the control spring
for one of a di󰀨erent range or if inspecting, cleaning or
replacing relief valve or any other pilot parts. Pilot part
key numbers are referenced in Figure 9.
1. Remove the pilot from the pipe nipple (key 24)
unless just the control spring is to be changed.
2. To gain access to the control spring or other
internal parts, remove the closing cap assembly
(key 5) and relieve control spring (key 7)
compression by turning the adjusting screw
(key 6) counter clockwise. Change the control
spring and install the adjusting screw and closing
cap assembly if no other maintenance will be
performed. Make sure of the proper control spring
setting according to the Installation and Startup
section and restamp the nameplate if necessary.
3. For any other internal maintenance, relieve control
spring compression according to step 2. Then
remove the cap screws (key 20) and separate the
pilot into three sections; spring case (key 1), body
(key 2) and bottom cover (key 3).
4. To inspect the two diaphragms (keys 14 and 15)
thoroughly, remove the diaphragm nut (key 11),
hex nut (key 19) and the upper and lower relay
heads (keys 16 and 17). The projecting prong in
the body may be used as the restraining member
to keep the yoke from turning while removing the
nuts. Also inspect the O-ring (key 12) and replace
any parts as necessary.
5. Take the yoke (key 4) and attached parts out of
the body to examine the disk holder assembly
(key 9). Remove the relay orifice (key 8) to check
for clogging and replace if necessary.
6. To replace the disk holder assembly, first
unscrew the bleed orifice (key 10). Remove it
and the associated parts. Then unscrew the disk
holder assembly from the bleed valve (key 26)
to gain access to the relay spring (key 13).
Clean or replace any parts as necessary
before reassembling.
7. Upon reassembly, pay particular attention to the
following assembly suggestions.
a. Before replacing the diaphragm case or spring
case, be sure the yoke assembly is positioned
so that it will not bind or rub on the prong in the
relay body.
Figure 6. Travel Indicator Assembly Drawings
APPLY LUBRICANT (L) OR SEALANT (S)(1)
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
1. Lubricant and sealant must be selected such that they meet the temperature requirements.
P1765
55 55
53
53
54
55
56
76
54
55
56
70
12A
L1
12B
L1
L1 70 L1
57 S1
57 S1
TOP VIEW
LEGACY TRAVEL INDICATOR DETAIL IMPROVED TRAVEL INDICATOR DETAIL
TOP VIEW
12
Type EZL

b. Avoid wrinkling the diaphragms when replacing
the diaphragm case and spring case.
c. Replace the diaphragm case, carefully working
the upper relay diaphragm (key 14) into the
recess in the diaphragm case. If the diaphragm
case rocks with respect to the pilot body,
diaphragm is probably wrinkled.
d. Replace the spring case, using care to smooth
the lower relay diaphragm (key 15) evenly into
the recess in the pilot body.
e. Install the eight cap screws, tightening them down
evenly in a crisscross pattern to avoid crushing the
diaphragm. Recommended nal torque on these
cap screws is 10 to 12 ft-lbs / 14 to 16 N•m.
8. After assembly, make sure of the proper control
spring setting according to the Installation and
Startup section and restamp the nameplate
(key 27) if needed.
Type 161EBM Pilot
Key numbers are referenced in Figure 10 unless
otherwise noted.
Trim Parts
1. As shown in Figure 10, remove the body plug
(key 3). Use needle nose pliers to remove the plug
spring (key 6) and plug/stem assembly (key 4).
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. As shown in Figure 10, stack the plug spring
(key 6) and plug/stem assembly (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) and
separate the spring case (key 2) from the body
assembly (key 1). Remove the control spring seat
(key 8), the control spring (key 9) and, if used, the
diaphragm limiter (key 10).
3. Remove the diaphragm assembly (key 7) and
inspect the diaphragm.
4. To gain access to the stem guide seal O-ring,
remove and inspect the stem guide seal assembly
(key 19) and if damaged replace the complete
assembly. Inspect the outer O-ring (key 22),
replace if necessary.
5. Install the diaphragm assembly (key 7) and push
down on it to see if the plug/stem assembly
(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. As shown in Figure 10, stack the control spring
(key 9), the control spring seat (key 8) and, if used,
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 9.5 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).
13
Type EZL

Parts List
Type EZL Main Valve (Figure 7)
Key Description Part Number
Disk Parts Kits
2 and 3 in. / DN 50 and 80 (includes key numbers: 29, 30 and 34)
4 in. / DN 100 (includes key numbers: 7, 29, 30, 34 and 75)
2 in. / DN 50, Nitrile (NBR) and
Fluorocarbon (FKM) REZL2X00N12
2 in. / DN 50, Fluorocarbon (FKM) REZL2X00F12
3 in. / DN 80, Nitrile (NBR) and
Fluorocarbon (FKM) REZL3X00N12
3 in. / DN 80, Fluorocarbon (FKM) REZL3X00F12
4 in. / DN 100, Nitrile (NBR) and
Fluorocarbon (FKM) REZL4X00N12
4 in. / DN 100, Fluorocarbon (FKM) REZL4X00F12
Full Repair Kits
2 and 3 in. / DN 50 and 80 (includes key numbers:
4, 7, 8, 9, 12B, 15, 17, 20, 28, 29, 30, 34, 70 and 76)
4 in. / DN 100 (includes key numbers:
4, 7, 8, 9, 12B, 15, 17, 20, 28, 29, 30, 34, 70, 75 and 76)
2 in. / DN 50, Nitrile (NBR) and
Fluorocarbon (FKM) REZL2X00N22
2 in. / DN 50, Fluorocarbon (FKM) REZL2X00F22
3 in. / DN 80, Nitrile (NBR) and
Fluorocarbon (FKM) REZL3X00N22
3 in. / DN 80, Fluorocarbon (FKM) REZL3X00F22
4 in. / DN 100, Nitrile (NBR) and
Fluorocarbon (FKM) REZL4X00N22
4 in. / DN 100, Fluorocarbon (FKM) REZL4X00F22
Travel Indicator Parts Kits
2 in. / DN 50 (includes key numbers:
12B, 53, 54, 55, 56, 57, 58, 70 and 76) ERSA01550A0
3 and 4 in. / DN 80 and 100 (includes key
numbers: 12B, 53, 54, 55, 56, 57, 58, 70 and 76) ERSA01555A0
1 Body
2 in. / DN 50
Cast Iron
NPT GE10583X012
CL125 FF GE10585X012
Steel
NPT GE10588X012
CL150 RF
Standard GE10676X012
Tapped inlet and outlet 14B5834X032
CL300 RF
Standard GE10678X012
Tapped inlet and outlet 14B5834X042
CL600 RF
Standard GE10679X012
Tapped inlet and outlet 14B5834X052
BWE, Schedule 40 GE10680X012
SWE GE10682X012
Key Description Part Number
1 Body (continued)
3 in. / DN 80
Cast Iron
CL125 FF GE10689X012
Steel
CL150 RF
Standard GE10699X012
Tapped inlet and outlet 14B5835X032
CL300 RF
Standard GE10700X012
Tapped inlet and outlet 14B5835X042
CL600 RF
Standard GE10701X012
Tapped inlet and outlet 14B5835X052
BWE, Schedule 40 GE10702X012
4 in. / DN 100
Cast iron
CL125 FF GE10707X012
Steel
CL150 RF
Standard GE10835X012
Tapped inlet and outlet 14B5836X032
CL300 RF
Standard GE10839X012
Tapped inlet and outlet 14B5836X042
CL600 RF
Standard GE10842X012
Tapped inlet and outlet 14B5836X052
BWE, Schedule 40 GE10843X012
2 Seat Ring
2 in. / DN 50 GE10271X012
3 in. / DN 80 GE11213X012
4 in. / DN 100 GE17779X012
3* Pin
2 in. / DN 50 (6 required) M0295820X12
3 and 4 in. / DN 80 and 100 (8 required) M0297310X12
4* Anti-Friction Ring (2 required)
2 in. / DN 50 M0272760X12
3 and 4 in. / DN 80 and 100 M0272810X12
5 Actuator Lower Casing
2 in. / DN 50 GE05003X012
3 and 4 in. / DN 80 and 100 GE07988X012
6 Cap Screws (8 required)
2 in. / DN 50 1A340924052
3 in. / DN 80 M4696002X12
4 in. / DN 100 1N462324052
7* O-ring
2 in. / DN 50
Nitrile (NBR) 12A1297X022
Fluorocarbon (FKM) 12A1297X012
3 in. / DN 80
Nitrile (NBR) 18B8514X012
Fluorocarbon (FKM) 18B8514X022
4 in. / DN 100
Nitrile (NBR) 18B2140X012
Fluorocarbon (FKM) 18B2140X022
8* Anti-Friction Rings (4 required)
2 in. / DN 50 M0194690X12
3 and 4 in. / DN 80 and 100 M0192170X12
9* O-ring (2 required)
2 in. / DN 50
Nitrile (NBR), -20 to 180°F / -29 to 82°C 1C3342X0042
Fluorocarbon (FKM) M6020036X12
3 and 4 in. / DN 80 and 100
Nitrile (NBR), -20 to 180°F / -29 to 82°C 1D2658X0012
Fluorocarbon (FKM) 1D2658X0022
*Recommended spare part
Parts Ordering
Each Type EZL regulator is assigned a serial number,
which can be found on the nameplate. Refer to the
number when contacting your local Sales Office for
technical information or ordering parts. Also be sure to
include the complete 11-character part number from
the following Parts List.
- continued -
14
Type EZL

*Recommended spare part
Type EZL Main Valve
(Figure 7) (continued)
Key Description Part Number
10 Pipe Plug (up to 3 required), All sizes 1A767524662
11 Actuator Upper Casing
2 in. / DN 50 GE04968X012
3 and 4 in. / DN 80 and 100 GE07514X012
12A* O-ring
Nitrile (NBR) M6010001X12
Fluorocarbon (FKM) M6020066X12
12B* O-ring
Nitrile (NBR) 1H2926X0032
Fluorocarbon (FKM) 1H2926X0022
13 Spring
2 in. / DN 50 M0195000X12
3 and 4 in. / DN 80 and 100 M0196880X12
14 Sleeve
2 in. / DN 50 M0272600X12
3 and 4 in. / DN 80 and 100 M0276310X12
15* O-ring
2 in. / DN 50 M6020095X12
3 and 4 in. / DN 80 and 100 M6020073X12
16 Socket Head Cap Screw (6 required)
2 in. / DN 50 M5011119X12
3 and 4 in. / DN 80 and 100 FA402512X12
17* O-ring
2 in. / DN 50 M6020096X12
3 and 4 in. / DN 80 and 100 M6020127X12
18 Inlet Plate
2 in. / DN 50 M0300260X12
3 and 4 in. / DN 80 and 100 M0196800X12
19 Outlet Plate
2 in. / DN 50 M0279180X12
3 and 4 in. / DN 80 and 100 M0276570X12
20* Diaphragm
2 in. / DN 50 GE07400X012
3 and 4 in. / DN 80 and 100 GE09204X012
21 Cap Screw
2 in. / DN 50 (14 required) 18B3065X012
3 and 4 in. / DN 80 and 100 (22 required) 1A514724052
22 Plain Washer
2 in. / DN 50 (32 required) 1A5196X0012
3 and 4 in. / DN 80 and 100 (48 required) 1A518925072
23 Hex Nut
2 in. / DN 50 (16 required) 1E944624112
3 and 4 in. / DN 80 and 100 (24 required) 1A3412A0022
24 Continuous Thread Stud Bolt (4 required)
2 in. / DN 50 GE00808X012
3 and 4 in. / DN 80 and 100 M4693003X12
25 Intermediate Flange
2 in. / DN 50 GE10308X032
3 in. / DN 80 GE11210X042
4 in. / DN 100 GE17777X032
26 Hex Nut (4 required)
2 in. / DN 50 1A341224122
3 and 4 in. / DN 80 and 100 1A368124122
27 Sleeve Adaptor
2 in. / DN 50 M0272570X12
3 and 4 in. / DN 80 and 100 GD27634X012
28* O-ring
2 in. / DN 50 M6020079X12
3 and 4 in. / DN 80 and 100 M6020151X12
29* O-ring
2 in. / DN 50 M6020112X12
3 and 4 in. / DN 80 and 100 M6020147X12
Key Description Part Number
30* Disk Holder Assembly
2 in. / DN 50
Nitrile (NBR) M0279110X12
Fluorocarbon (FKM) M0281870X12
3 and 4 in. / DN 80 and 100
Nitrile (NBR) M0276830X12
Fluorocarbon (FKM) M0282120X12
31 Disk Retainer
2 in. / DN 50
100% Capacity M0272750X12
80% Capacity M0297340X12
50% Capacity M0297430X12
30% Capacity M0297440X12
3 and 4 in. / DN 80 and 100
100% Capacity M0276250X12
80% Capacity M0297630X12
50% Capacity M0297640X12
30% Capacity M0297650X12
32 Lock Washer (2 required)
2 in. / DN 50 M5077004X12
3 and 4 in. / DN 80 and 100 M5077001X12
33 Socket Head Cap Screw (2 required)
2 in. / DN 50 M5011006X12
3 and 4 in. / DN 80 and 100 M5011017X12
34* O-ring (2 required)
2 in. / DN 50
Nitrile (NBR) 10B4428X012
Fluorocarbon (FKM) 10B4428X022
3 and 4 in. / DN 80 and 100
Nitrile (NBR) 10B4366X012
Fluorocarbon (FKM) 10B4366X022
35 Bracket (2 required)
2 in. / DN 50 M0278570X12
3 and 4 in. / DN 80 and 100 M0220960X12
36 Nameplate - - - - - - - - - - -
37 Drive Screw (5 required), All sizes 1A368228982
38 Travel Indicator Plug, All sizes M0297680X12
39 Bolt (2 required)
2 in. / DN 50 GE07223X012
3 and 4 in. / DN 80 and 100 GE07221X012
43 Caution Label (2 required) GE00835X012
44 Adjusting Screw Cap, All sizes 24B1301X012
53 Indicator Cover
2 in. / DN 50 M0196770X12
3 and 4 in. / DN 80 and 100 M0192220X12
54 Travel Indicator Stem
2 in. / DN 50 ERSA01799A0
3 and 4 in. / DN 80 and 100 ERSA01806A0
55 Indicator Bushing, All sizes ERSA02798A0
56 Travel Indicator Fitting, All sizes ERSA02569A0
57 Spring Collet, All sizes M0192180X12
58 Travel Indicator Scale, All sizes M0201990X12
59 Flow Arrow, All sizes - - - - - - - - - - -
60 Protective Cap
2 in. / DN 50 T13659T0112
3 in. / DN 80 T13659T0092
70* O-ring M6020005X12
72 Belleville Washer
2 in. / DN 50 GE10273X012
3 and 4 in. / DN 80 and 100 GE11214X012
75* O-ring
4 in. / DN 100
Nitrile (NBR) 10B4373X012
Fluorocarbon (FKM) 10B4373X022
76* Back Up Ring (2 required) 1N659106242
15
Type EZL

Mounting Parts
Standard Single Pilot Configuration for Mounting
Type 6352, 6353 or 6354
Key Description Part Number
47 Pipe Nipple 1C782526012
48 Tube Elbow
Steel - - - - - - - - - - -
Stainless steel - - - - - - - - - - -
49 External Tube Connector
Steel - - - - - - - - - - -
Stainless steel - - - - - - - - - - -
52 Tubing - - - - - - - - - - -
63 1/4 in. / 6.35 mm, Pipe Nipple 1C488226232
64 1/4 in. / 6.35 mm, Coupling 1C911728992
Standard Working Monitor Pilot Types 161AYW
and 61 Series
Key Description Part Number
65 Mounting Bracket GE07740X012
66 Bushing (2 required) 1A3424X00A2
67 Washer (2 required) 1D716228982
68 Nut (2 required) 1E944024112
69 U-bolt 11B3469X012
Types 6352, 6353, 6354L, 6354M and
6354H Pilots (Figure 8)
Key Description Part Number
Parts kit (included are: valve plug, key 4; diaphragm
assembly, key 5; body plug gasket, key 12; bellows
O-ring, key 17; closing cap gasket, key 20 and for the
P590 Series filter, filter element, key 2 and gasket, key 7)
Type 6352 R6352X00012
Type 6353 R6353X00012
Type 6354 R6354X00012
1 Pilot Body
Aluminum 35A6228X012
Aluminum with 50 psig / 3.4 bar
Type 1806H relief 17A8075X012
Stainless steel 39A5971X012
Stainless steel with 50 psig / 3.4 bar
Type 1806H relief 17A8075X022
2 Spring Case
Aluminum 25A6220X012
Stainless steel 28A9277X012
2 Regulator Bonnet (for Type 6353) 24B6641X022
3 Body Plug
Aluminum 15A6221X012
316 Stainless steel 15A6221X042
4 Valve Plug and Stem Assembly
Nitrile (NBR) disk with Stainless steel
stem (standard) 15A6207X012
Nitrile (NBR) disk with 316 Stainless steel
stem (NACE) 15A6207X052
Fluorocarbon (FKM) with Stainless steel stem 15A6207X042
Types 6352, 6353, 6354L, 6354M and
6354H Pilots (Figure 8) (continued)
Key Description Part Number
5 Diaphragm Assembly
Type 6352, Nitrile (NBR) 15A6216X012
Type 6353, Nitrile (NBR) 15A6216X022
Type 6353, Fluorocarbon (FKM) 15A6216X092
Type 6353, Fluorocarbon (FKM) 15A6216X162
Type 6354, Neoprene (CR) 15A6216X032
Type 6354, Fluorocarbon (FKM) 15A6216X152
6 Control Spring
Type 6352
2 in. w.c. to 2 psig / 5 to 140 mbar 14A9672X012
2 to 10 psig / 0.14 to 0.69 bar, Black 14A9673X012
DVGW 4 to 10 psig / 0.30 to 0.69 bar 14A9673X012
Type 6353
3 to 40 psig / 0.21 to 2.8 bar 1E392527022
35 to 125 psig / 2.4 to 8.6 bar 1K748527202
DVGW 10 to 40 psig / 0.69 to 2.8 bar 1E392527022
DVGW 40 to 58 psig / 2.8 to 4.0 bar 1K748527022
Type 6354L
85 to 200 psig / 5.9 to 13.8 bar 1L346127142
Type 6354M
175 to 220 psig / 12.1 to 15.2 bar 1L346127142
Type 6354H
200 to 300 psig 13.8 to 20.7 bar 15A9258X012
7 Spring Seat
Type 6352 or 6353 1B798525062
Type 6354L, 6354M or 6354H 1K155828982
8 Stem Guide
416 Stainless steel (standard) 15A6222X012
410 Stainless steel (NACE) 15A6222X022
9 Adjusting Screw
Type 6352 or 6353 10B7192X012
Type 6354 10B6190X012
10 Locknut
Type 6352 1C724018992
Type 6353 or 6354 1A946324122
11 Closing Cap
Aluminum 23B9152X012
Stainless steel 1H2369X0032
12 Body Plug Gasket/O-ring
For aluminum body, Composition 1C495704022
For Stainless steel body, Nitrile (NBR) 1F113906992
For Stainless steel body, Fluorocarbon (FKM) 1N463906382
13 Vent Assembly Type Y602X1-A12
14 Machine Screw (6 required)
Aluminum and brass 10B6189X022
Stainless steel 1V4360X0022
15 Relief Valve Assembly
25 psig / 1.7 bar 16A5929X052
25 psig / 1.7 bar (NACE) 16A5929X042
25 psig / 1.7 bar (for oxygen service) 16A5929X032
25 psig / 1.7 bar (Stainless steel) 16A5929X072
16 Bellows Assembly 15A6202X032
17 O-ring 1D682506992
19 Filter
P590 Series (standard) Type P590X1-A2
P590 Series for corrosive service Type P590X1-A1
P590 Series for NACE service Type P590X1-A6
20 Closing Cap Gasket 15A6218X012
- continued -
16
Type EZL

Types 6352, 6353, 6354L, 6354M and
6354H Pilots (Figure 8) (continued)
Key Description Part Number
21 Pipe Nipple
For standard and corrosive service 1C488226232
For NACE service 1C4882X0032
For corrosive NACE service 1C488238982
22 Restriction
Standard 17A2030X012
High 17A2029X012
23 Diaphragm Limiter
Aluminum 15A9259X012
Brass 19A8674X012
Stainless steel 10B4407X012
26 NACE Tag - - - - - - - - - - -
27 Tag Wire - - - - - - - - - - -
28 Packing Bonnet 1L449635072
29 Packing Nut 0P077624102
30 Handwheel 1L217544992
31 Washer 1A329128982
32 Screw 1E985428982
33 Packing Spring 1F125437012
34 Packing Box Gasket 1B487099202
35 Packing Follower 1K885035072
36 External Adaptor 1F124801012
37 Internal Adaptor 1F124401012
38 Packing Washer 1F125236042
39 Packing Ring (3 required) 1C752601012
40 Adjusting Screw 21B5621X012
61 Series Pilots (Figure 9)
Key Description Part Number
1 Relay Spring Case
Types 61L, 61LD and 61LE 1B983919012
Type 61H
Standard adjusting screw 1B984119012
Capped adjusting screw 1H232619012
Type 61HP
Standard adjusting screw 2P969419012
Capped adjusting screw 20A4735X012
2 Relay Valve Body
Types 61L, 61LD, 61LE and 61H 2J581919012
Type 61HP 33A9845X012
3 Bottom Cover
Type 61L 2C518619012
Type 61HP 13A9843X012
4 Relay Yoke
Type 61L 1D662544012
Type 61HP (2 required) 13A9838X012
5 Closing Cap Assembly
Type 61L
For all except pilots with handwheel adjusting
screw and pressure loaded pilots T11069X0012
Pressure loaded corrosive trim 1E422724092
Standard trim with handwheel adjusting screw 1R759314012
Type 61HP
Pressure loaded/capped adjusting screw 1E599914012
6 Adjusting Screw
Type 61L
For all except handwheel adjusting screw 1B537944012
For use with handwheel adjusting screw 1R759414012
Type 61HP
Standard 1C216032992
Pressure loaded/capped adjusting screw 1F6635X0012
61 Series Pilots (Figure 9) (continued)
Key Description Part Number
7 Control Spring
Type 61L
0.25 to 2 psig / 0.02 to 0.14 bar 1B886327022
1 to 5 psig / 0.07 to 0.34 bar 1J857827022
2 to 10 psig / 0.14 to 0.69 bar 1B886427022
5 to 15 psig / 0.34 to 1.0 bar 1J857927142
10 to 20 psig / 0.69 to 1.4 bar 1B886527022
Type 61HP
15 to 45 psig / 1.0 to 3.1 bar 1E392527022
35 to 100 psig / 2.4 to 6.9 bar 1D387227022
100 to 300 psig / 6.9 to 20.7 bar 1D465127142
8 Relay Orice
Standard applications 1C520135032
Fast close and open or open only 1D373735032
9 Disk Holder Assembly
Standard trim 1B8868000A2
Corrosive trim 1B8868000B2
10 Bleed Orifice
Type 61L
Standard bleed 1B887335032
Capped bleed 1D777135032
Type 61HP 1D318135032
11 Diaphragm Nut
Standard trim 1B989514012
Corrosive trim 1B989535072
12 O-ring Seal
Standard and corrosive trim 1B885506992
Pressure loaded corrosive trim 1B8855X0012
13 Relay Spring
Type 61L 1C911537022
Type 61HP 18797937022
14 Upper Relay Diaphragm
Type 61L
Standard and corrosive trim 1B885202052
Pressure loaded corrosive trim 1N162802332
Type 61HP 13A9841X022
15 Lower Relay Diaphragm
Type 61L
Standard and corrosive trim 1B886002052
Pressure loaded corrosive trim 1N536102332
Type 61HP 13A9840X012
16 Upper Relay Head
Type 61L 1B919325072
Type 61HP (4 required) 13A9839X012
17 Lower Relay Head (Type 61L only) 1B91942S072
18 Spring Seat (Type 61L only) 1B886225072
19 Hex Nut
Type 61L 1A340324122
Type 61HP (2 required) 1A346524122
20 Cap Screw (8 required) 1B989624052
23 Pipe Plug (for Type 61L) 1A649528992
24 Pipe Nipple 1C488226232
25 Filter Assembly
Standard trim Type P590X1-A2
Corrosive trim Type P590X1-A1
26 Bleed Valve
Type 61L 1D986735132
Type 61HP 1D5604000B2
27 Nameplate - - - - - - - - - - -
28 Gasket (Type 61L only) 1P753306992
30 Pipe Plug 1A369224492
33 Handwheel 1J496144012
34 Hex Nut 1A351124122
- continued -
17
Type EZL

61 Series Pilots (Figure 9) (continued)
Key Description Part Number
35 Spring Seat
Type 61L 1J618124092
Type 61HP 10A3963X012
40 O-ring 1D541506992
41 Adaptor 1J881624092
42 Yoke Cap 13A9836X012
43 Lockwasher 1A352332992
44 Machine Screw 16A5763X012
45 Valve Spring Seat 1L251135072
46 Cap Screw (6 required) 15A0690X012
47 Machine Screw (4 required) 1A866935032
48 Cap Screw (6 required) 1P327028982
50 Drive Screw (2 required) 1A368228982
51 Diaphragm Insert (2 required) 13A9842X012
52 Lower Yoke Cap 13A9837X012
53 Bleed Plug 1V211514012
54 Vent Assembly Type Y602X1-A12
Type 161EBM Pilot (Figure 10)
Key Description Part Number
Type 161EBM Pilot Parts Kit (included are
keys 4, 6, 7, 15, 17, 19 and 22)
For 5 to 200 psig / 0.34 to 13.8 bar R161MX00012
For 200 to 350 psig / 13.8 to 24.1 bar R161MX00022
1 Body Assembly, Stainless steel 30B8715X012
2 Spring Case 27B9722X012
3 Body Plug, Stainless steel 1B7975X0052
4* Plug/Stem Assembly,
Nitrile (NBR) with Stainless steel stem 20B9389X052
Fluorocarbon (FKM) with Stainless steel stem 20B9389X062
6 Plug Spring, 302 Stainless steel 1E701337022
7* Diaphragm Assembly, Nitrile (NBR) diaphragm
with 304 Stainless steel diaphragm plate See Table 4
8 Control Spring Seat, Plated steel See Table 4
9 Control Spring, Plated steel spring wire See Table 4
10 Diaphragm Limiter, 303 Stainless steel See Table 4
11 Adjusting Screw, Plated steel See Table 4
12 Locknut, Plated steel 1D667728982
13 Machine Screw, Plated steel (6 required) 1V4360T0012
15* Body Plug O-ring, Nitrile (NBR) rubber 1F113906992
16 Closing Cap
Type 161EBM 24B1301X012
Metal, for pressure loading, Type 161EBM 17B1406X012
17* Closing Cap Gasket, Pressure loading
for metal closing cap only, Type 161EBM 1C659804022
18 Type Y602-12 Vent Assembly, Plastic 27A5516X012
19* Stem Guide Seal Assembly, Stainless steel
seal and seal retainer with Nitrile (NBR)
rubber O-ring 10B8711X012
22* O-ring 10A0904X012
P590 Series Filter (Figure 11)
Key Description Part Number
1 Filter Body
Type P594-1, Brass 1E312414012
Type P593-1, Aluminum 1E312409012
2* Filter Element, Cellulose 1E312606992
3 Filter Head
Type P594-1, Brass 1E312514012
Type P593-1, Aluminum 1E312509012
4 Machine Screw
Type P594-1, Brass 1J500218992
Type P593-1, Aluminum 1J500209012
5 Washer (2 required)
Type P594-1, Brass 1J500018992
Type P593-1, Aluminum 1J500010062
6 Spring Washer, Plated carbon steel 1H885128982
7* Gasket, Composition 1F826804022
Type 252 Pilot Supply Filter (Figure 12)
Key Description Part Number
1 Filter Head Assembly
Aluminum (A92011 T3) 17B7978X012
316 Stainless steel 17B7978X022
2 Filter Body
Aluminum (A92011 T3)
Standard 27B6811X022
Extended 27B7488X022
316 Stainless steel
Standard 27B6811X012
Extended 27B7488X012
3 Lower Seat, Delrin®17B6816X012
4 Filter Cartridge, Polyethylene 17B6813X012
5 O-ring, Nitrile (NBR) 1F269206992
6 Pipe Plug, 316 Stainless steel 1A767535072
7 Drain Valve (Optional),
316 Stainless steel 16A8280X362
8 Upper Seat, Delrin®17B6814X012
*Recommended spare part
Delrin®is a mark owned by E.I. du Pont De Nemours and Co.
KEY PART NAME
CONTROL SPRING RANGE IN psig / bar AND SPRING COLOR CODE
5 to 15 /
0.34 to 1.0,
White
10 to 40 /
0.69 to 2.8,
Yellow
30 to 75 /
2.1 to 5.2,
Black
70 to 140 /
4.8 to 9.7,
Green
130 to 200 /
9.0 to 13.8,
Blue
200 to 350 /
13.8 to 24.1,
Red
7Diaphragm Assembly 17B9055X022(1) 17B9055X022(1) 17B9055X022(1) 17B9055X022(1) 17B9055X022(1) 17B9055X032(2)
8 Spring Seat 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012 17B0515X012
9 Spring 17B1260X012 17B1262X012 17B1259X012 17B1261X012 17B1263X012 17B1264X012
10 Diaphragm Limiter - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10B4407X012
11 Adjusting Screw 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3081X012 10B3080X012
1. Standard assembly for Stainless steel construction; 1/32 in. / 0.80 mm thick diaphragm and 1-3/4 in. / 45 mm diaphragm plate diameter.
2. Standard assembly for Stainless steel construction; 1/32 in. / 0.80 mm thick diaphragm and 1-1/2 in. / 38 mm diaphragm plate diameter.
Table 4. 161EBM Series Monitor Pilot Part Numbers (keys 7, 8, 9, 10 and 11, Figure 10)
18
Type EZL

Figure 7. Type EZL Main Valve Assembly
GE10987
DETAIL A.1
4 IN. / DN 100 BODY SIZE ONLY
DETAIL A.2
2 AND 3 IN. / DN 50 AND 80
BODY SIZES ONLY
APPLY LUBRICANT (L) OR SEALANT (S)(1)
L1 = LITHIUM HYDROXYSTEGRATE NLGI 2 GRADE GREASE
S1 = ANAEROBIC METHACRYLATE SEALANT FOR NUTS AND BOLTS
S2 = ANAEROBIC METHACRYLATE SEALANT FOR THREADS
S3 = MULTI-PURPOSE POLYTETRAFLUOROETHYLENE (PTFE) THREAD SEALANT
1. Lubricant and sealants must be selected such that they meet the temperature requirements.
A
2
1
72
22
23
24
25
34
26
6
27
28
29
30
31
32
33
34
32
33
21
201918
17
16
15
891084
1413
3
4
5
6
7
8
9
8
11
L1
L1 L1 L1 S3 L1 L1 L1 S1 L1 L1
L1
L1
L1
L1
L1
L1
S1
S1
L1
L1
L1
L1
L1
L1
S2
S1
S1
75
2
2
L1
34
72
L1
19
Type EZL

Figure 8. Types 6352 through 6354H Pilot Assemblies
COMPLETE TYPE 6352, 6353 OR 6354L PILOT
35A623635A8889
DETAIL OF TYPE 6354M OR 6354H PILOT
GE10987-8
Figure 7. Type EZL Main Valve Assembly (continued)
37
36
43
39
60
3759
35
23
11
10
14
20
22
15
13
16
19 21 12 17
9
2
7
6
5
8
4
1
3
20
Type EZL