Butterfly valve

Details Butterfly valve Butterfly valve

1979-06-25

1980-04-29

Cline, William R.

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

251305, 251308, 251367, F16K 1226

Patent

active

042002583

ABSTRACT:
A fluid flow controlling butterfly valve assembly is disclosed which comprises a valve body defining a through passage for fluid, a butterfly valving member supported within the body, a shaft extending transversely through the passage and drivingly connected to the valving member, and a shaft supporting structure rotatably supporting the shaft in the body while sealing against leakage from the valve.
In a preferred embodiment the shaft supporting structure includes a band extending about the body and defining recesses aligned with shaft portions emerging from the body. Resilient flexible elements are disposed within the recesses and compressively engage the shaft and body to provide both bearings and seals.

REFERENCES:
patent: 2729238 (1956-01-01), Hite
patent: 2783771 (1957-03-01), Thomas
patent: 3737144 (1973-06-01), Duncan
patent: 3967810 (1976-07-01), Pulvermacher
patent: 4060220 (1977-11-01), Fischer
patent: 4093178 (1978-06-01), Hughes
patent: 4111395 (1978-09-01), Sheppard
patent: 4123035 (1978-10-01), Boudreau
patent: 4133512 (1979-01-01), Johnson

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