Valves and valve actuation – Limit stop – Rotary valve
Patent
1975-10-14
1978-02-28
Cohan, Alan
Valves and valve actuation
Limit stop
Rotary valve
251309, 251315, F16K 506
Patent
active
040762114
ABSTRACT:
A ball valve having a valve body, a main flow passage therethrough, a lateral bore extending generally perpendicularly through the passage, and a unitary ball valve member received in the lateral bore. The ball valve member has a spherical ball portion with an aperture therethrough and a pair of circular sealing heads, one on each side of the ball portion. Each of the sealing heads carries a seal which is slidably and sealingly engageable with the walls of the lateral bore. The sealing heads are of substantially equal diameter so that pressure forces acting on the ball valve member which tend to move the latter axially within the bore are balanced. A seal body is insertable into a main flow passage of the valve body from one end thereof for sealingly engaging the ball portion after the ball valve member has been installed in the lateral bore.
REFERENCES:
patent: 1384159 (1921-07-01), Schenker
patent: 2825527 (1958-03-01), Wendell
patent: 2839074 (1958-06-01), Kaiser
patent: 3563265 (1971-02-01), Graham
patent: 3635439 (1972-01-01), McNally
patent: 3779509 (1973-12-01), Vandenbroek
patent: 3860032 (1975-01-01), Rogers
patent: 3897933 (1975-08-01), Christenot
patent: 3960365 (1976-06-01), Horowitz
Krechel Joseph L.
Purvis Michael J.
Cohan Alan
Control Devices, Incorporated
Michalsky Gerald A.
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