Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1975-07-03
1976-11-30
Schwadron, Martin P.
Fluid handling
Systems
Flow path with serial valves and/or closures
137489, F16L 2900
Patent
active
039943160
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: 2649109 (1953-08-01), Samiran
patent: 2836207 (1958-05-01), Griswold
patent: 2943636 (1960-07-01), Reed et al.
patent: 3034544 (1962-05-01), Griswold
patent: 3125319 (1964-03-01), Arbogast et al.
patent: 3168125 (1965-02-01), Rosell
patent: 3251379 (1966-05-01), Lebow
patent: 3286725 (1966-11-01), Elbogen et al.
patent: 3298390 (1967-01-01), DeGraaf
International Telephone and Telegraph Corporation
Peterson Thomas L.
Schwadron Martin P.
Spiegel H. Jay
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