Hydrant valve

Details Hydrant valve Hydrant valve

1979-11-15

1981-12-01

Schwadron, Martin P.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

13761406, 251 35, 251 43, 251128, 251291, F16K 3728, F16K 3112

Patent

active

043030939

ABSTRACT:
A servo valve controlled hydrant valve for aircraft fueling has a removable adaptor for the hose coupling and includes a clamping device which assures that the servo valve is deactuated before the adaptor housing can be unbolted for removal. Deactuation of the servo valve closes the vent line in a piston-cylinder main valve arrangement thereby assuring closure of the main valve.

REFERENCES:
patent: 1301557 (1919-04-01), Valley
patent: 2693816 (1954-11-01), Hoelzer
patent: 2943636 (1960-07-01), Reed et al.
patent: 3034554 (1962-05-01), Griswold
patent: 3206158 (1965-09-01), Bloomquist
patent: 3358708 (1967-12-01), Williams
patent: 3610571 (1971-10-01), Cisco
patent: 3971405 (1976-07-01), Millar
patent: 4078577 (1978-03-01), Brown

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