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Y696VR Series
4. To replace the lever assembly (key 9), remove the
machine screws (key 11) and lever pin.
5. To replace the valve stem (key 13) or stem seal
O-ring (key 15) remove the valve stem from the
diaphragm casing.
6. Lightly grease the new stem seal O-ring (key 15)
and install on the valve stem (key 13). Install the
valve stem by pushing it into the diaphragm casing
(key 20).
7. Install the lever assembly (key 9) on the valve
stem (key 13) and secure the lever assembly
(key 9) with the machine screws (key 11).
8. Install the diaphragm head gasket (key 7), lower
diaphragm head (key 24), diaphragm (key 5),
and upper diaphragm head (key 6) on the pusher
post (key 8) and attach with the hex nut (key 37).
Tighten using 30 to 45 ft-lbs / 41 to 61 N•m
of torque.
9. Install the pusher post (key 8) plus attached
diaphragm parts onto the lever assembly (key 9).
10. Install the spring case assembly (key 23) and control
spring (key 1) on the diaphragm casing (key 20)
so that the vent assembly is correctly oriented, and
secure them with the spring case cap screws (key 21)
and hex nuts (key 22), finger tight only.
11. Turn the adjusting nut (key 2) clockwise until there
is enough control spring (key 1) force to provide
proper slack to the diaphragm (key 5) and attached
parts. Using a crisscross pattern, finish tightening
the spring case cap screws (key 21) and hex nuts
(key 22) using 55 to 75 in-lbs / 6 to 8 N•m of torque.
Then finish turning the adjusting nut (key 2) to the
desired outlet pressure setting.
12. Install a replacement closing cap gasket (key 35) if
necessary, and then install the closing cap (key 3).
Parts Ordering
When corresponding with the local Sales Office or
about this regulator, include the type number and all
other pertinent information stamped on the closing
cap or nameplate. Specify the eleven-character part
number when ordering new parts from the following
parts list.
6
Parts List
Key
Description
1
Spring
1 to 3 in. w.c. / 2 to 7 mbar
1-1/2 to 5 in. w.c. / 4 to 12 mbar
3 to 8 in. w.c. / 7 to 20 mbar
8 to 16 in. w.c. / 20 to 40 mbar
16 to 32 in. w.c. / 40 to 80 mbar
0.25 to 3 psig / 17 to 207 mbar
2
Adjusting Nut
3
Closing Cap
4
Lower Spring Seat
5*
Diaphragm
Nitrile (NBR)
Fluorocarbon (FKM)
Ethylenepropylene (EPR)
Silicone
6
Upper Diaphragm Head
7*
Diaphragm Head Gasket
8
Pusher Post
Stainless steel
Hastelloy
C
®
9
Lever Assembly
Stainless steel
Hastelloy
C
®
11
Machine Screw (2 required)
Stainless steel (standard)
Stainless steel (NACE)
Hastelloy
C
®
13
Valve Stem
Stainless steel (NACE)
Hastelloy
C
®
14
Cotter Pin
Stainless steel (Standard)
Stainless steel (NACE)
Hastelloy
C
®
15*
O-ring (Stem Seal for Type Y696VRM only)
Nitrile (NBR)
Fluorocarbon (FKM)
Ethylenepropylene (EPR)
Perfluoroelastomer (FFKM)
16*
Body Gasket
17
Split Ring
19
Union Nut
Cast iron body
WCC steel body
CF8M Stainless steel body
Hastelloy
C
®
20
Diaphragm Casing
Type Y696VR
Cast iron
WCC Steel
Standard
NACE
CF8M Stainless steel
Hastelloy
C
®
20
Diaphragm Casing (continued)
Type Y696VRM
WCC Steel
CF8M Stainless steel
Hastelloy
C
®
21
Cap Screw (12 required)
Standard
NACE
22
Hex Nut (12 required)
Standard
NACE
*Recommended Spare Parts.
Hastelloy
C is a mark owned by Haynes International, Inc.
®
Part Number
1D892527022
1D7654000A2
0B0197000A2
1B766627062
1B883327022
1A630627022
1A201914012
1L928308012
1U226019012
0R032502052
0R0325X0032
0R0325X0062
0R0325X0082
0B006628982
1L143403022
0Y096435072
0Y0964X0012
1E3409X0052
1E3409X0022
1A866935032
1A8669X0012
1A8669X0022
1A630935032
1A6309X0022
1A866537022
1A8665X0032
14B7990X012
1E472706992
1N430406382
1D6875X0032
1D6875X0082
1A348004032
0Y095828982
0Z017619062
0Z017624092
0Z0176X0012
0Z0176X0012
3B973519012
3F191622012
3F1916X0022
3F191633092
3F1916X0102
39A7502X022
39A7502X012
39A7502X032
1B136324052
1B136338992
1A309324122
1A309338992
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