Butterfly valve

Details Butterfly valve Butterfly valve

1977-01-10

1978-08-01

Cline, William R.

Valves and valve actuation

With correlated flow path

Pipe coupling or union

251152, 251305, 251368, F16K 122

Patent

active

041038665

ABSTRACT:
The butterfly valve includes a pair of tailpieces which are threaded onto the outer ends of axially spaced pipe sections of a piping system and have a radially extending flange, a valve unit having a wafer-like body which fits between the tailpieces, and a pair of clamping members, each encircling one of the tailpiece flanges. All of these components preferably are fabricated by a powder-metallurgy process.
The valve unit is supported between the tailpieces by a plurality of bolts which extend through axially alignable, circumferentially spaced apertures in the clamping members and the outer periphery of the valve body. After the butterfly valve has been installed, the valve unit can be removed without disturbing the piping system by removing the bolts or rotated 360.degree. without disturbing the piping by loosening the bolts so that the valve unit and clamping members can be rotated relative to the tailpieces.

REFERENCES:
patent: 3550902 (1970-12-01), Pidgeon
patent: 3643916 (1972-02-01), Sandenburgh
patent: 3722855 (1973-03-01), Massey
patent: 3902697 (1975-09-01), Robinson

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