Fluid flow check device

Details Fluid flow check device Fluid flow check device

1988-01-04

1989-02-21

Rivell, John

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

116277, 200 819R, F16K 3700

Patent

active

048056650

ABSTRACT:
A fluid flow check device is adapted for interconnection with a fluid flow line check valve, and includes a housing having a switch mounted therein. A pivot shaft is connectable at a first end to a flapper pivot axle of the check valve and at a second to the switch. A timed alarm circuit is connected to the switch and activates an alarm when fluid flow starts to cease for a preset duration.

REFERENCES:
patent: 2029633 (1936-02-01), Muhleisen
patent: 2514731 (1950-07-01), Sourber
patent: 2940070 (1960-06-01), Sanders
patent: 3085432 (1963-04-01), Bloom et al.
patent: 3240062 (1966-03-01), Fredriksson
patent: 3360621 (1967-12-01), Liddell
patent: 3857277 (1974-12-01), Moore
patent: 4353390 (1982-10-01), Karpenko
patent: 4625758 (1986-12-01), Murray

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