Graco Inc 233757 important safety instructions 15A179

Mechanical Back Pressure Regulators Part Nos. 233812 and 234258

25 1

28

26

3 27

24	5	10
22
21	13		12
20
19		2	11
18
23			9
16

Parts

17 6

15

14

2

3 4 1

10 5

4

8

1Torque to 6 N•m (53 in-lb).

2Torque to 2 N•m (18 in-lb).

3Fill internal cavity with grease.

5Used only on non-npt model 233812.

6Torque to 5 N•m (44in-lb).

TI11248a

Ref.				Ref.
				No.	Part No.	Description	Qty
No.	Part No.	Description	Qty
				15	15A179	DIAPHRAGM	1
1		HOUSING, lower, for 233812	1
				16	15A173	CAP, spring	1
		HOUSING, lower, for 234258	1
				17	117122	NUT, seal-lock	1
2	245369	SEAT, valve	1
				18	15A175	PLATE, spring, bottom	1
3	15Y036	O-RING	1
				19	117096	SPRING, compression	1
4	15Y035	O-RING	2
				20	117092	SPRING, compression	1
8	15A143	COVER	1
				21	15A176	PLATE, spring, top	1
9	117123	SCREW, fhms, M4x10	2
				22	117108	BALL, 8 mm	1
10	15A219	RING, for non-npt model 233812	2
				23	15A186	PACKING, PTFE with carbon	1
		only
				24	245366	HOUSING, upper	1
11	117101	PLUG, threaded	2
				25	117129	SCREW, shcs, M5x80	8
12	117085	SEAL, ring	1
				26	117017	WASHER	8
13	117099	PLUG, threaded	1
				27	15A141	BONNET, cover	1
14	245373	PLUNGER, valve	1
				28	15A242	SCREW, custom	1

309474K 15