Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1997-06-19
1998-11-17
Rivell, John
Fluid handling
Processes
Cleaning, repairing, or assembling
251302, F16R 118
Patent
active
058363360
ABSTRACT:
A cut-off diaphragm gate valve has two members (1) of the shape of a quadrangle located opposite to each other as in mirror reflection. Passage openings (4) are disposed in the four corners of each of the members (1). Control screws (5) furnished with nuts (6) and washers (7) are inserted in the passage openings (4). The control screws (5) hold the two members (1) together and place the two members (1) in the proper relative position. Threaded attachment openings (8) made in each of the two members (1) serve for connecting the cut-off diaphragm gate valve to the liquid transport installation. Each of the two members is in part immersed in a profiled gasket (9) vulcanized together with each of the members (1). A profiled diaphragm (19) is nested between the profiled gaskets (9). The profiled diaphragm is seated rotatably on a fixed pin (18). A regulating and limiting pin (27) is located at a side edge (26) of the diaphragm (19) for establishing an open position of the cut-off diaphragm gate valve.
REFERENCES:
patent: 1099200 (1914-06-01), Patterwon
patent: 1617503 (1927-02-01), Seymour et al.
patent: 3045706 (1962-07-01), Dillon
patent: 3512751 (1970-05-01), Fitzgerald
patent: 3659822 (1972-05-01), Nagy
patent: 3788346 (1974-01-01), Fitzgerald
patent: 3837356 (1974-09-01), Selep et al.
patent: 4543981 (1985-10-01), Bates et al.
Kasper Horst M.
Rivell John
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