Frangible valve stem assembly for rotary valve

Details Frangible valve stem assembly for rotary valve Frangible valve stem assembly for rotary valve

1982-12-06

1985-02-05

Weakley, Harold W.

Fluid handling

Frangible

137368, 251292, F16K 1304

Patent

active

044973446

ABSTRACT:
The operating stem of a rotary valve is rotationally displaced via a detachable valve cap mounted on the stem and to which rotational operating torque is applied. Depending internally from the cap into a rotational interfit with slots provided on a stem lug are a pair of frangible shear pins adapted to shear off and prevent valve damage in response to excessive rotational torque exerted against the cap.

REFERENCES:
patent: 1015358 (1912-01-01), Suess
patent: 3540481 (1970-11-01), Peters
patent: 3971402 (1976-07-01), Gallo
patent: 4051866 (1977-10-01), Bake
patent: 4072161 (1978-02-01), Schoeneweis

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