Air release valve

Details Air release valve Air release valve

1994-07-01

1996-04-30

Michalsky, Gerald A.

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137411, F16K 3118

Patent

active

055115772

ABSTRACT:
The air release valve comprises a valve chamber (36) having an inlet (20) and an outlet (24). Inside the chamber is a control float (38) which is responsive to changes in liquid level in the chamber. There is also a a stack of valve members (40, 42, 44) in the chamber above the control float. The valve members have vent passages through them which increase in size with increasing height in the stack but which are smaller than the outlet (24). The top valve member (44) in the stack is designed to be lifted up, by differential air pressures acting on it, to seat on the outlet (24) and thereby reduce the effective size of the outlet when a pipeline served by the air release valve is filling with liquid and the liquid displaces air through the valve.

REFERENCES:
patent: 2853092 (1958-09-01), Klikunas
Brochure "Adams Sewage Air Relief Valves," undated.
Brochure "Epex Air Relief Valves," undated.
Brochure "Anti-Slam, Regulated Closure Air & Vacuum Valves," Revised Aug. 1, 1989.
Brochures concerning prior APCO valves, undated.

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