Continuous air removal valve

Details Continuous air removal valve Continuous air removal valve

1974-10-04

1976-03-16

Klinksiek, Henry T.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

417306, 417435, F16K 2400

Patent

active

039439585

ABSTRACT:
A valved cap is provided for the top of a riser pipe connected to a flow line under pressure such as may be found in irrigation systems and is normally closed when the system is in operation. The valve automatically opens when the system is stopped to admit air for preventing a vacuum build up and closes under pressure when the system is started up during which time air in the riser pipe is permitted to escape to avoid a pressure build up while the valve is closing. An apertured fitting connected to the valve stem within the riser pipe connects to a flexible air vent hose extending down the riser pipe and into the main flow line in the direction of the flow and air trapped in the riser pipe after the valve is closed is siphoned through the hose into the main flow line to be expelled into the atmosphere at an outlet in the main line.

REFERENCES:
patent: 2646059 (1953-07-01), Wittner et al.

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