Valve with downstream manual bleed

Details Valve with downstream manual bleed Valve with downstream manual bleed

1994-08-30

1998-12-29

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

251 3005, 251 46, 251215, F16K 3112

Patent

active

058530266

ABSTRACT:
A valve for controlling the flow of a liquid includes a valve seat which is engaged by a selectively operable valve member. A pressure chamber above the valve member contains upstream pressurized fluid in the closed position of the valve. The valve is opened by bleeding off pressurized fluid from this pressure chamber. A manual bleed screw assembly is used to manually open the valve when desired by initiating this pressure bleed procedure from the pressure chamber. The bleed screw assembly bleeds the pressurized fluid to a downstream location in the flow path, rather than to atmosphere, without having to completely remove the bleed screw assembly from the port in which it is received.

REFERENCES:
patent: 3282552 (1966-11-01), Sommese, Sr.
patent: 3829059 (1974-08-01), Rupert
patent: 4015616 (1977-04-01), Hanff
patent: 4099701 (1978-07-01), Berger
patent: 4301992 (1981-11-01), Karbo
patent: 4336918 (1982-06-01), Karbo
patent: 4505450 (1985-03-01), Saarem et al.
patent: 4911401 (1990-03-01), Holcomb et al.
Rain Bird Brass and Plastic Valves Brochure, dated Jan. 1992.

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