
Parts
18
309474U
Pneumatic Back Pressure Regulators
Part Numbers 233810 and 234257
25
24
21
17
10
12
13
11
15
14
2
3
4
1
10
4
8
9
23
16
2
1
3
4
26
27
Torque to 4-5 N•m (35-44 in-lb).
Torque to 2 N•m (18 in-lb).
Torque to 5 N•m (44 in-lb).
Grease OD.
Used only on non-npt model 233810.
Used only on npt model 234257.
Apply medium-strength (blue) thread
locker to the threads.
1
2
3
4
5
6
5
5
TI11250a
6
6
7
7
Ref.
Part
Description
Qty.
1
----
HOUSING, lower, for 233810
1
----
HOUSING, lower, for 234257
1
2
245369
SEAT, valve
1
3
15Y036
O-RING
1
4
15Y035
O-RING
1
8
15A143
COVER
1
9
117123
SCREW, fhms, M4x10
2
10
15A219
RING, for non-npt model
233810
2
11
117101
PLUG, threaded
2
12
117085
SEAL, ring
1
13
117099
PLUG, threaded
1
14
245373
PLUNGER, valve
1
15
15A179
DIAPHRAGM
1
16
15A204
PISTON
1
17
117122
NUT, seal-lock
1
21
117102
SEAL, flat
1
23
15A185
PACKING, PTFE with carbon
1
24
15A191
HOUSING, upper
1
25
117127
SCREW, shcs, M5x35
8
26
15C332
FITTING, for npt model 234257
only
1
27
15C333
WASHER, for npt model
234257 only
1
Ref.
Part
Description
Qty.