Butterfly valve

Details Butterfly valve Butterfly valve

1979-12-05

1982-03-09

Spiegel, H. Jay

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Liquid supplied at valve interface

13724616, 13724622, 251306, 251355, F16K 1226, F16K 136

Patent

active

043184227

ABSTRACT:
A butterfly valve is adapted to pivot a valve stem to a valve body through openings formed in a ring-shaped elastic valve seat attached inside the valve body, to slidably contact the valve member and the inner face of the valve seat each other in the vicinity of the valve stem, and to form recesses for charging lubricant in the slidably contacting face on the valve seat or on the side face of the valve member.

REFERENCES:
patent: 2070000 (1937-02-01), Clade
patent: 2147851 (1939-02-01), Mallon
patent: 2169810 (1939-08-01), Mueller
patent: 3183925 (1965-05-01), Hoyle et al.
patent: 3346002 (1967-10-01), Thompson, Jr. et al.
patent: 3580268 (1971-05-01), Shafer
patent: 3589678 (1971-06-01), Magoon
patent: 4014511 (1977-03-01), Uno
patent: 4025050 (1977-05-01), Manki et al.
patent: 4140147 (1979-02-01), Van't Sant

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