Relief valve testing apparatus

Details Relief valve testing apparatus Relief valve testing apparatus

1991-07-01

1994-01-04

Noland, Tom

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73168, 73862541, G01L 2700, G01L 522, G01L 500

Patent

active

052750361

ABSTRACT:
An apparatus for testing the opening pressure of a relief valve has a clamp removably secured to the bonnet of a relief valve. The clamp has four upstanding bolts slidably held in T-shaped slots. The bolts mount the base plate of a frame which carries a lifting cylinder and transducer. The cylinder connects to the relief valve stem and applies a lifting force thereto. The transducer measures the amount of force needed to open the valve. The frame is removable from the clamp which provides access to the relief valve adjustment nut. Adjustments in the relief valve opening pressure can be made without requiring removal of the clamp. A calibration adaptor fits on the frame to allow testing of the transducer in situ.

REFERENCES:
patent: 2317826 (1943-04-01), Templin
patent: 2350577 (1944-06-01), Vordahl
patent: 2419293 (1947-04-01), Simonson
patent: 3309918 (1967-03-01), Scott et al.
patent: 4349885 (1982-09-01), Thompson
patent: 4428223 (1984-01-01), Trevisan
patent: 4568310 (1986-01-01), Cohen et al.
patent: 4572237 (1986-02-01), Thompson
patent: 4646556 (1987-03-01), Courcoux et al.
patent: 4761999 (1988-08-01), Thompson
patent: 4949288 (1990-08-01), Bookout

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