Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive
Patent
1990-05-01
1991-07-02
Cusick, Ernest G.
Fluent material handling, with receiver or receiver coacting mea
Automatic control of flow cutoff or diversion
Level or overflow responsive
137423, 137409, 141212, 141216, 141220, 141229, F16K 2118, F16K 3118
Patent
active
050278703
ABSTRACT:
A float chamber located in generally parallel, laterally spaced relationship to the main liquid flow passageway contains superimposed floats that move along a substantially linear path of travel. The floats cooperate with other control components to effect closure of a main valve assembly when the liquid level adjacent the mechanism reaches a preselected first elevation, and to close a bleed valve assembly when the liquid level reaches a second, higher elevation. The main valve assembly includes a movable plate valve that is spring biased toward an open position and that is biased toward a closed position by the force of liquid adjacent thereto and upstream therefrom. A latch and associated catch prevent movement of the valve plate to its closed position until such time as the liquid level reaches the first elevation.
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OPW Technical Bulletin, "61-SO Overfill Prevention Valve," particularly p. 2, QA 11 (May 27, 1988).
OPW Technical Flyer 61-SO, "Overfill Prevention Valve" (Apr., 1989).
OPW Publication OPW-SOP, "The System Solution to your UST Needs," particularly p. 2 (Oct., 1988).
OPW Publication C-3557-PA, "Assembly and Installation Instructions for OPW 61-SO Overfill Prevention Valve," (Feb., 1988).
OPW Catalog SSE, "Service Station Equipment," particularly p. 19 (Apr., 1988).
Cusick Ernest G.
Emco Wheaton Inc.
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