Obturator for ball valve

Details Obturator for ball valve Obturator for ball valve

1994-04-11

1995-05-23

Fox, John C.

Valves and valve actuation

Rotary valves

Ball valve

251161, F16K 520

Patent

active

054174058

ABSTRACT:
An improved valve sealing arrangement where a sealing surface on the valve obturator presses against a compatibly arranged valve seat circumscribing a flow path to close the flow path, or alternately, the valve obturator having a through bore rotatable into position to align with the flow path. The improvement entails forming or cutting slots into the valve obturator behind upper and lower portions of the sealing surface to give localized flexibility to the upper and lower portions to match the flexibility of the middle region of the sealing surface which is located in front of the through bore.

REFERENCES:
patent: 2076840 (1937-04-01), Heggem
patent: 2076841 (1937-04-01), Heggem
patent: 3348805 (1967-10-01), Sanctuary
patent: 3456916 (1969-07-01), Ytzen et al.
patent: 3515371 (1970-06-01), King et al.
patent: 5263685 (1993-11-01), Winnike et al.

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