Flexible time delay valve

Details Flexible time delay valve Flexible time delay valve

1977-08-25

1979-12-11

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137 85A, F16K 1514

Patent

active

041778316

ABSTRACT:
A time delay valve of flexible material to be supported in an opening in a wall and having a body member provided with a recess permitting the use of a tool to position the valve in the opening in the wall from one side of the wall with the recess also accommodating displaced material during the time that the valve is being installed. The valve has an enlarged head which closes the opening and flexes away from the wall to open and permit relatively free fluid flow. A metering groove extends radially of an annular sealing surface formed on the perimeter of the head to restrict and delay fluid flow when the valve is in a closed position relative to the wall.

REFERENCES:
patent: 2571893 (1951-10-01), Kendall
patent: 2662723 (1953-12-01), Coffey
patent: 2775363 (1956-12-01), Taylor
patent: 2936779 (1960-05-01), Kindred
patent: 3159176 (1964-12-01), Russell et al.
patent: 3454182 (1969-07-01), Morton
patent: 3851588 (1974-12-01), Taylor
patent: 3931830 (1976-01-01), Gritz

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