Piston valve

Details Piston valve Piston valve

1975-12-11

1977-03-15

Cohan, Alan

Fluid handling

Systems

Flow path with serial valves and/or closures

13761418, 13763019, F16K 100, F16K 324

Patent

active

040118894

ABSTRACT:
A valve having separate closures for its inlet and its outlet respectively comprises a housing having the inlet in an elongated tubular wall and the outlet at an annular valve seat. A piston constituting one closure is movable coaxially within said wall so as to open and close the outlet. A sleeve constituting another closure is movable coaxially over the piston and within said wall so as to open and close the inlet. The piston and the sleeve are associated for interdependent movement.

REFERENCES:
patent: 1047774 (1912-12-01), Eynon
patent: 1370760 (1921-03-01), Ostrander
patent: 3125121 (1964-03-01), Muller
patent: 3895651 (1975-07-01), Okada et al.

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