Gate valve sleeve

Details Gate valve sleeve Gate valve sleeve

1994-06-16

1996-10-01

Fox, John C.

Valves and valve actuation

Reciprocating valve

Gate

251358, F16K 316

Patent

active

055605877

ABSTRACT:
A gate valve sealing unit includes first and second annular seal members that are attached to a main body structure within a passageway that receives and is selectively occluded by a gate. The first and second seal members include first and second rigid mounting hubs to which are mounted first and second annular elastomer sleeves, respectively. Each elastomer sleeve has a continuous lip section and plural axially spaced cavities, the lip sections of the first and second sleeves engaging peripheral margins on opposite sides of the gate when it occludes the passageway and engaging each other otherwise. The first and second mounting hubs include axially outward radial flanges that extend from the respective first and second sides of the main body structure.

REFERENCES:
patent: 2626776 (1953-01-01), Martineau
patent: 2985422 (1961-05-01), Anderson et al.
patent: 3333816 (1967-08-01), Williams et al.
patent: 3722857 (1973-03-01), Townsend
patent: 4257447 (1981-03-01), Clarkson
patent: 4515347 (1985-05-01), Sitton et al.
patent: 4688597 (1987-08-01), Clarkson et al.
patent: 4773627 (1988-09-01), King et al.
patent: 4846442 (1989-07-01), Clarkson et al.
patent: 4911407 (1990-03-01), Paul, Jr.
patent: 5271426 (1993-12-01), Clarkson et al.
Bulletin 27-25, "KGD Model Wafer-Type Knife-Gate Valves," The Clarkson Company, Sep., 1991.
Lit. No. 27-70, "Installation and Maintenance Instructions, Clarkson Series KGD Valve," The Clarkson Company, Jun., 1992.

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