Method and apparatus for measurement of valve stem thrust

Details Method and apparatus for measurement of valve stem thrust Method and apparatus for measurement of valve stem thrust

1982-04-19

1986-02-18

Cohan, Alan

Valves and valve actuation

Electrically actuated valve

Rotary electric actuator

25112903, 7386231, F16K 3105

Patent

active

045709033

ABSTRACT:
A method and apparatus for directly measuring the thrust present on a valve stem wherein a valve actuator is operated to actuate a valve and to automatically shut off when a predetermined actuator condition is attained, the invention, including a tension load cell supported for coupling to the valve stem to provide a measurement of the thrust present on the externally accessible end of the valve stem to provide a valve stem thrust reading directly without the need to disassemble the valve, or actuator assembly, with minimal hardware requirements, and at low cost.

REFERENCES:
patent: 2028696 (1936-01-01), Beckwith
patent: 2878687 (1959-03-01), Kron et al.
patent: 3024403 (1962-03-01), Safford
patent: 3170339 (1965-02-01), Plume
patent: 3524526 (1970-08-01), Denkowski
patent: 3720295 (1973-03-01), Balz
patent: 4346728 (1982-08-01), Sulzer
patent: 4361308 (1982-11-01), Buss

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