Replaceable adjustable butterfly valve seat

Details Replaceable adjustable butterfly valve seat Replaceable adjustable butterfly valve seat

1980-05-29

1981-08-04

Spiegel, H. Jay

Valves and valve actuation

Rotary valves

Butterfly

F16K 122

Patent

active

042818184

ABSTRACT:
This invention concerns a butterfly valve having a resilient, adjustable body seat for the pivoting disc. The seat comprises a T-shaped elastomeric ring which is confined at one end by the transverse wall of an annular groove in the valve body and that another end by a clamping ring which slides along the wall of the flow passage extending through the body. The clamping ring is forced against the seat ring by a plurality of individual screw actuators spaced around its circumference and therefore selected portions of the seat ring can be compressed as needed to produce a leak-free seal around the entire periphery of the pivoting disc. The T-shaped elastomeric ring is held in place solely by mechanical forces in order to permit removal, maintenance, and replacement thereof.

REFERENCES:
patent: 3393697 (1968-07-01), Fawkes
patent: 3583670 (1971-06-01), Manske
patent: 3726504 (1973-04-01), Kormos et al.
patent: 3734457 (1973-05-01), Roos
patent: 3774880 (1973-11-01), Crookham et al.
patent: 3814380 (1974-06-01), Kormos et al.
patent: 4006883 (1977-02-01), Hilsheimer

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