Butterfly valve assembly

Details Butterfly valve assembly Butterfly valve assembly

1992-09-30

1993-05-04

Fox, John C.

Valves and valve actuation

Rotary valves

Butterfly

251308, 251358, F16K 122

Patent

active

052074110

ABSTRACT:
An industrial butterfly valve for use in a fluid flow line is provided having a tubular housing with a disc valve and stem mounted for pivotal movement within the flow passage found in the housing. The assembly employs a unique bolt retention component that functions to prevent back out of the bolts holding the disc to the stem and further functions to prevent leakage around the bolts. A resilient seat around the interior periphery of the flow passage provides a positive seal when the disc is rotated to a closed position the resilient seat having a pair of annular bias springs molded into the mounting edges so as to retain its shape and resist peeling or distortion upon assembly and disassembly in a flow line.

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