Valves and valve actuation – With means to increase head and seat contact pressure – With positive reduction
Patent
1988-07-29
1989-07-04
Walton, George L.
Valves and valve actuation
With means to increase head and seat contact pressure
With positive reduction
137315, 251161, 251174, 251315, 251317, 251363, 277129, F16K 2500, F16K 4300
Patent
active
048444103
ABSTRACT:
There is provided a seat assembly adapted to be received in a spool bore of a valve having a fluid controlling member for controlling the flow of fluid through the valve, with the spool bore having a threaded interior portion. The seat assembly includes a first member having, located towards one end thereof, a grooved ring adapted to receive a tool, and a threaded exterior portion which is adapted to threadedly engage the interior threaded portion of the spool bore. The seat assembly further includes a second member adapted to be received in the first member, with the second member having a seat face adapted to contact the fluid controlling member. The first member threadedly moves the second member between a first position where the seat face contacts the fluid controlling member of the valve to a second position where the seat face is remote from the fluid controlling member of the valve. An alternative seat assembly is adapted to slide in a spool bore of a valve having a fluid controlling member for controlling the flow of fluid through the valve. This seat assembly includes a first member having, located towards one end thereof, a grooved ring adapted to receive a tool, and a threaded exterior portion and a second member having a threaded interior portion which is adapted to threadedly engage the threaded exterior portion of the first member to provide axial movement between the first and the second members. The first member can be moved between a first position where the first member contacts the fluid controlling member of the valve to a second position where the first member is remote from the fluid controlling member of the valve.
REFERENCES:
patent: 2316933 (1943-04-01), Chaplin
patent: 2558247 (1951-06-01), Hamer
patent: 2879798 (1959-03-01), Anderson
patent: 3653631 (1972-04-01), Hurst
patent: 3891183 (1975-06-01), Feiring
patent: 3934606 (1976-01-01), Matthews
patent: 4506864 (1985-03-01), Hartmann
patent: 4727901 (1988-03-01), Horvei
Crosby Valve & Gage
Walton George L.
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