Adjustable check valve

Details Adjustable check valve Adjustable check valve

1984-03-12

1985-11-05

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137854, E16K 1514

Patent

active

045507490

ABSTRACT:
A fluid check valve has a disk shaped resilient valve element mounted along the flow path of the valve to permit the flow in one direction only. The disk is maintained normally in a dish shape, with dished disk being biased toward and against the valve inlet to normally bias the valve in a closed configuration. The operating characteristics of the valve, such as cracking pressure and minimum flow rate, are adjustable by a disk mount which enables the biasing force to be varied. The mount supports the disk and enables slight adjustable movement of the disk axially toward and away from the inlet so as to vary the degree of dishing of disk and, therefore, its resilient biasing force. In another aspect of the invention the valve is provided with improved outlet characteristic which minimize the back pressure of the valve and enable it to be responsive quickly even at very low flow rates and pressure differentials.

REFERENCES:
patent: 2128050 (1938-08-01), Landis
patent: 2270469 (1942-01-01), Osborn
patent: 3037522 (1962-06-01), Millan
patent: 3124488 (1964-03-01), Ruetschi
patent: 3889710 (1975-06-01), Brost
patent: 3954121 (1976-05-01), Kardos

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