Fluid valve with actuation sensor

Details Fluid valve with actuation sensor Fluid valve with actuation sensor

1991-06-20

1992-09-08

Rivell, John

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

200 819M, F16K 3700

Patent

active

051449773

ABSTRACT:
Method and apparatus for remotely detecting when a safety relief valve is initially opened includes a permanent field fixedly associated with the closure member and a magnetic proximity switch mounted on the housing so that initial movement of the magnetic field causes the magnetic proximity switch to close, indicating that the valve has opened. Adjustment means are provided to calibrate the position of the sensor switch so that initial movement of the closure member from the seat of less than 0.04 inches can be detected without interfering with the operation of the valve.

REFERENCES:
patent: 2892051 (1959-06-01), Moore
patent: 3789875 (1974-02-01), McGee
patent: 3859619 (1975-01-01), Ishihara et al.
patent: 3896280 (1975-07-01), Blake
patent: 4213021 (1980-07-01), Alexander
patent: 4340086 (1982-07-01), Hemm et al.
patent: 4696325 (1987-09-01), Magee
patent: 4967792 (1990-11-01), Magee
patent: 5031660 (1991-07-01), Magee

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