Incoming gated relief valve

Details Incoming gated relief valve Incoming gated relief valve

1976-05-14

1977-09-27

Croyle, Carlton R.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

137115, 169 24, 417234, 417434, 417442, 417510, F04B 4900, A62C 2720

Patent

active

040508579

ABSTRACT:
A gate valve is threadedly attached to an influent port of a motorized pump of a vehicular fire engine at all times. Thus it is not necessary to stop the pump, remove a cap and connect a water supply hose to the influent port. Instead the supply hose is connected to the gate valve, the valve is purged of air, and then opened to connect the new source without air hammer, or flow interruption. A pressure relief valve on the suction side of the gate, relieves pump pressure whether the gate is open or closed.

REFERENCES:
patent: 588399 (1897-08-01), Cox
patent: 731893 (1903-06-01), Hall
patent: 2241857 (1941-05-01), Hisaw

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