Pressure control valve and coupling

Details Pressure control valve and coupling Pressure control valve and coupling

1975-08-20

1978-03-14

Schwadron, Martin P.

Fluid handling

Systems

Flow path with serial valves and/or closures

1374895, 137637, B67D 538

Patent

active

040785777

ABSTRACT:
This disclosure relates to a hydrant coupling device including a pressure control valve which, due to its portability, may be connected to any one of a plurality of hydrants to regulate the flow of liquid therefrom, and additionally including a pit valve which is interlocked with the pressure control valve body to prevent the spilling of liquid if the control valve is accidentally forced loose from the pit valve.

REFERENCES:
patent: 2629395 (1953-02-01), Krone et al.
patent: 2649109 (1953-08-01), Samiran
patent: 2665926 (1954-01-01), Fraser
patent: 2729471 (1956-01-01), Fraser
patent: 2836207 (1958-05-01), Griswold
patent: 2943636 (1960-07-01), Reed et al.
patent: 3034544 (1962-05-01), Griswold
patent: 3168125 (1965-02-01), Rosell
patent: 3217747 (1965-11-01), Joanis et al.
patent: 3251379 (1966-05-01), Lebow
patent: 3286725 (1966-11-01), Elbogen et al.
patent: 3298390 (1967-01-01), De Graaf
patent: 3351094 (1967-11-01), Elbogen et al.
patent: 3479005 (1969-11-01), De Graaf

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