Tank pressure control apparatus

Details Tank pressure control apparatus Tank pressure control apparatus

1990-12-24

1991-09-03

Rivell, John

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

137202, 137410, 251 11, F16K 2404, F16K 3118

Patent

active

050443976

ABSTRACT:
An apparatus is provided for controlling flow of liquid through an aperture. The apparatus includes a housing and a float valve disposed in and unattached to the housing. The float valve is formed to include a float chamber and is movable in the housing between an aperture blocking position and an aperture unblocking position. The apparatus further includes a mechanism for controlling movement of the float valve by selectively venting fluid from the float chamber to reduce the buoyancy of the float valve.

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