Cla-Val 50B-4KG1 Fire Pump Pressure Relief Valve
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Cla-Val 50B-4KG1 Fire Pump Pressure Relief Valve
Cla-Val 50B-4KG1 (globe) and 2050B-4KG1 (angle) pilot-controlled fire pump pressure relief valve. Opens fast and closes slowly to guard against pump start-up and shutdown surges, holding pump discharge pressure near the set point. UL listed 1.5 to 8 inch; FM approved 3 to 8 inch.
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Key specifications
| Function | Fire pump pressure relief valve (also usable as pressure sustaining, back pressure or unloading valve) |
| Patterns | Globe (50B-4KG1) or angle (2050B-4KG1) |
| Sizes | 1.5, 2, 2.5, 3, 4, 6, 8 in (40 to 200 mm) |
| End connections | Flanged 1.5 to 8 in; grooved 1.5 to 8 in; threaded 1.5 to 3 in |
| Flange options | ANSI 150#, ANSI 300#, ISO PN10/PN16/PN25, grooved 300#; RF or FF |
| Body and cover | Epoxy-coated ductile iron (ASTM A-536) |
UL ListedFM Approved
Download datasheet (PDF)