Valves and valve actuation – With means to increase head and seat contact pressure – Spring
Patent
1975-08-22
1978-02-07
Cline, William R.
Valves and valve actuation
With means to increase head and seat contact pressure
Spring
251309, 137539, 1372695, 137DIG2, 137DIG4, F16K 506, F16K 1504
Patent
active
040722910
ABSTRACT:
An improved rotary valve comprising a valve body having a flow passage extending therethrough and a rotary valve stem journaled in said valve body transversely intersecting the flow passage. The valve stem includes at least one spring biased spherical valve member carried in a radially aligned cavity formed in the valve stem. A valve seat is formed in the valve body coaxial with the flow passage and is conformed to sealingly receive the spring biased valve member therein when the valve is placed in the closed position. The valve stem is pressure equalized within the valve body. In one form the valve stem is provided with an external configuration adjacent the valve member and flow passage to maintain a constant flow rate through the open valve. In another form this external configuration is modified to provide for varying the flow rate through the open valve through manipulation of the valve stem. A pressure equalized probe mechanism is disclosed as well as methods of forming valve seats within the valve bodies to conform to the configuration of the associated valve members.
REFERENCES:
patent: 500944 (1893-07-01), Pickel
patent: 1185333 (1916-05-01), Keltner
patent: 1992319 (1935-02-01), Maggenti
patent: 3406943 (1968-10-01), Newell
patent: 3512944 (1970-05-01), Craig et al.
patent: 3698685 (1972-10-01), Lang
patent: 3802457 (1974-04-01), Wurzburger
Cline William R.
Entek Corporation
Laney William R.
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