Fluid pressure-operated valves

Details Fluid pressure-operated valves Fluid pressure-operated valves

1979-02-05

1981-02-10

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

13751611, 137517, 13753317, 13754321, F16K 1502

Patent

active

042495660

ABSTRACT:
An emergency two-way shut-off valve comprises a housing and two valve members having openings therethrough which when the valve members are spaced apart, permit flow of fluid through the valve but, when the valve members are pressed together, are blocked off by imperforate portions of the valve members. Both valve members are movable and spring-urged apart towards respective stops within the housing.

REFERENCES:
patent: 1364001 (1920-12-01), Shadduck
patent: 2179144 (1939-11-01), Buttner
patent: 2748798 (1956-06-01), Withrow
patent: 3221880 (1965-12-01), Wilkinson
patent: 4099540 (1978-07-01), Papp

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