Ball valve having replaceable seals under full service pressure

Details Ball valve having replaceable seals under full service pressure Ball valve having replaceable seals under full service pressure

1992-06-15

1993-03-16

Fox, John C.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

251 86, 251315, F16K 506

Patent

active

051935732

ABSTRACT:
A housing having an inlet and outlet and seal ring sealably positioned in each of the inlet and outlet and movable longitudinally. A ball valve element positioned in the housing between the seal rings and having a tubular member rotatable on trunnions. A movable seat ring is connected to opposite sides of the tubular member by fastening means inside of the seat ring and the ring is removable through an openable closure flange.

REFERENCES:
patent: 3580268 (1971-05-01), Shafer
patent: 4140149 (1979-02-01), Laignel et al.
patent: 4273152 (1981-06-01), Freeman
patent: 4372532 (1983-02-01), Yawamoto et al.
patent: 4512360 (1985-04-01), Chronister
patent: 4739792 (1988-04-01), Tomberg

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