Owner manual
2
Ref. No. Part Name Material
1 Base Bronze
2 Base Ring Bronze
3 Base Ring Set Screw Brass
4 Disc Bronze
5 Guide and Ring Bronze
6 Guide Ring Set Screw Brass
7 Spindle Steel
8 Spring Plated Steel
9 Spring Washer Steel
10 Bonnet Bronze
11 Adjusting Bolt Brass
12 Adjusting Bolt Locknut Plated Steel
13 Lifting Cap Zinc Alloy/Steel
14 Lifting Cap Pin Plated Steel
15 Spindle Nut Plated Steel
16 Spindle Nut Locknut Plated Steel
17 Seal and Wire Stainless Steel
Dimensions — Weights
Watts Bronze Safety Relief Valves
Figure 41
Materials
VALVE SIZE ORIFICE SIZE DIMENSIONS WEIGHT
Inlet x Outlet A B C D* E
in. mm in. mm in. mm in. mm in. mm in. mm lb. kgs.
1
⁄2 x
3
⁄4 15 x 20 D 6
9
⁄16 167 1
3
⁄8 35 2
1
⁄4 57 1
3
⁄8 35 1
1
⁄8 29 2 0.9
3
⁄4 x
3
⁄4 20 x 20 D 6
9
⁄16 167 1
3
⁄8 35 2
1
⁄4 57 1
3
⁄8 35 1
1
⁄4 32 2.25 1.0
3
⁄4 x 1 20 x 25 E 7
1
⁄8 181 1
5
⁄8 41 2
5
⁄16 59 1
3
⁄8 35 1
1
⁄4 32 2.5 1.1
1 x 1 25 x 25 E 7
1
⁄8 181 1
5
⁄8 41 2
5
⁄16 59 1
3
⁄8 35 1
1
⁄2 38 2.75 1.2
1 x 1
1
⁄4 25 x 32 F 9 229 1
7
⁄8 48 2
13
⁄16 71 1
13
⁄16 46 1
1
⁄2 38 4 1.8
1
1
⁄4 x 1
1
⁄4 32 x 32 F 9 229 1
7
⁄8 48 2
13
⁄16 71 1
13
⁄16 46 1
3
⁄4 44 4.25 1.9
1
1
⁄4 x 1
1
⁄2 32 x 40 G 9
11
⁄16 246 2
1
⁄8 54 3 76 1
13
⁄16 46 1
7
⁄8 48 7 3.2
1
1
⁄2 x 1
1
⁄2 40 x 40 G 9
11
⁄16 246 2
1
⁄8 54 3 76 1
13
⁄16 46 2
1
⁄16 52 7.25 3.3
1
1
⁄2 x 2 40 x 50 H 12
1
⁄8 308 2
9
⁄16 65 3
1
⁄2 89 2
3
⁄4 70 2
1
⁄4 57 13.5 6.1
2 x 2 50 x 50 H 12
1
⁄8 308 2
9
⁄16 65 3
1
⁄2 89 2
3
⁄4 70 2
9
⁄16 65 13.75 6.2
2 x 2
1
⁄2 50 x 65 J 13
5
⁄16 338 3
1
⁄8 79 3
3
⁄4 95 2
3
⁄4 70 2
3
⁄4 70 17.5 7.9
2
1
⁄2 x 2
1
⁄2 65 x 65 J 13
5
⁄16 338 3
1
⁄8 79 3
3
⁄4 95 2
3
⁄4 70 3 76 17.75 8.0
*Add
1
⁄2" to D dimension when lever is pulled out to manually operate the valve.