Well bottom release valve

Details Well bottom release valve Well bottom release valve

1988-10-31

1989-08-15

Walton, George L.

Valves and valve actuation

With friction detent

166112, 166332, 251294, 251343, 251348, 137570, F16K 3146, F16K 3502

Patent

active

048567566

ABSTRACT:
A valve assembly for draining water from a well pipe to facilitate the flushing of the pipe or to reduce its weight when removing the pipe from the well without separating the components of the pumping system which are all securely connected. The valve assembly is positioned in an axial line just above the down hole pipe. The assembly includes a short pipe section having drainage ports. A tight fitting sleeve circumscribes the pipe section. The sleeve is spring biased continually urging the sleeve in a downward or closed position. A means is provided that is connected to the sleeve and extends upwardly to the surface where it may be accessed to manually open and close the ports.

REFERENCES:
patent: 245401 (1881-08-01), Raynor et al.
patent: 1354862 (1920-10-01), Ulrich
patent: 1402826 (1922-01-01), Anderson
patent: 1601676 (1926-09-01), Burright
patent: 1687317 (1928-10-01), Archer
patent: 1802510 (1931-04-01), Hole et al.
patent: 2944607 (1960-07-01), Baker
patent: 4103739 (1978-08-01), Hall
patent: 4595061 (1986-06-01), Underwood
patent: 4637471 (1987-01-01), Soderberg
patent: 4691778 (1987-09-01), Pyne

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