Fluid handling – Freeze condition responsive safety systems – Low temperature responsive drains
Patent
1988-01-12
1988-08-16
Walton, George L.
Fluid handling
Freeze condition responsive safety systems
Low temperature responsive drains
236101D, 237 80, E03B 712
Patent
active
047636823
ABSTRACT:
A valve activating system is provided, which is intended for association with a valve assembly including a valve housing defining a conduit therein which includes a fluid inlet opening and a fluid outlet opening, and a valve which is normally biased in a closed position in the conduit to control the flow of fluids therethrough. In order to activate the valve an opening is provided into the conduit for insertion of a valve activating element, such as a simple lever which is positioned at a location at which it can activate the valve. In the embodiment shown, the opening into the conduit has a circular cross-section and is fitted with a sealing O-ring. The lever is sized and shaped so that its insertion through the O-ring will complete a fluid tight closure of the opening so that fluid present in or flowing through the conduit cannot exit through the opening provided for the lever. Therefore the valve activating system remains dry. A mechanical thermostatic device is positioned at the other end of the lever, which at a predetermined temperature condition, causes the lever to pivot around the O-ring to activate the valve. The O-ring serves the dual function of a seal and of a fulcrum. The system is intended primarily for use as a freeze protection assembly for a water supply system.
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Dale, II Warren A.
Gardner James B.
Corbin Charles C.
Drain Brain, Inc.
Margolis Donald W.
Walton George L.
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