Parts - Graco B Series Instructions Manual

Stainless Steel Back Pressure Regulator –
Model 236770, Series B
Model 237503, Series B
Ref.
No. Part No. Description
1n 236893 SEAT, valve
2n 236894 STEM, valve
3 100529 NUT, hex, cap; 5/16–18
4 189815 CAP, regulator, air
5 101976 WRENCH, Allen; 3/8
6n 189817 GASKET, acetal
7n 154789 GASKET, copper
8 16C761 HOUSING, valve
9 157796 SPRING, compression
10 160180 PLATE, spring
11 100111 NUT, lock; 1/2–20
12
20
2
13
14
19
18
6
8
Includes items 1 to 20
Includes items 1 to 15
3
7
2
1
3

Parts

Ref.
Qty. No. Part No.
1 12 189816
1 13 177432
1 14n 177431
1 15 112844
1
1 17 236892
1
1 18 16C760
1
1
1 19 187877
20n 187876
n Keep these spare parts on hand to reduce down
time.
5
Torque 324 to 396 in-lb (37 to 45 N.m)
1
2
Torque 27 to 33 in-lb (3.1 to 3.7 N.m)
17
Torque 70 to 80 in-lb (8 to 9 N.m)
3
Description
PLATE, backup
PLATE, support, diaphragm
DIAPHRAGM
SCREW, adjusting, 1/2–20 x
1–5/8 long
UNION, adapter; 1/2–14 npt(m)
x 3/8–18 npsm(f) swivel
ADAPTER, inlet; 3/8–18
npsm(m), 3/8–18 npt(m), 1/4–18
npt(f)
TUBE, fluid gauge
GAUGE, 0–300 psi
(0–21 bar, 0–2.1 MPa)
15
11
1
4
10
9
308401 5
Qty.
1
1
1
1
1
1
1
1
03504