Pump casing relief valve is a direct-acting, spring loaded, diaphragm type small relief valve used to relieve pressure build-up in a sprinkler system or in valve trim. The bottom plug can be removed and converted globe to angle type.
Available Size
| Size | UL adjustable pressure setting (psi) | Working Pressure (psi) | Ref.No. |
|---|---|---|---|
| 1/2″ / DN15 | 10 ~ 75 | 300 | U1501 (UL/FM) |
| 1/2″ / DN15 | 20 ~ 200 | 300 | U1502 (UL/FM) |
| 1/2″ / DN15 | 100 ~ 300 | 300 | U1503 (UL/FM) |
| 3/4″ / DN20 | 10 ~ 75 | 300 | U1504 (UL/FM) |
| 3/4″ / DN20 | 20 ~ 200 | 300 | U1505 (UL/FM) |
| 3/4″ / DN20 | 100 ~ 300 | 300 | U1506 (UL/FM) |
| 1″ / DN25 | 20 ~ 75 | 300 | U1507 (UL) |
| 1″ / DN25 | 40 ~ 200 | 300 | U1508 (UL) |
| 1″ / DN25 | 100 ~ 300 | 300 | U1509 (UL) |
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