Fluid handling – Non-valving motion of the valve or valve seat
Patent
1983-02-01
1984-05-22
Walton, George L.
Fluid handling
Non-valving motion of the valve or valve seat
251210, 251327, 251328, F16K 2900
Patent
active
044495471
ABSTRACT:
A gate valve presents on a flat valve seat surface defining a fluid flow path the mating flat surface of a freely rotatable circular disc carried at its center along a longitudinally moving straight line axis. The valve seat defines a fluid flow aperture asymmetrically disposed to the disc center movement line to thereby create a turning moment from pressure and flow of fluid through the valve seat. This serves without ratching mechanisms to rotate the disc periphery randomly thereby presenting different disc edge portions in a wear position from the fluid flow. Accordingly, wear is evenly distributed about the peripheral edge to significantly increase life and reduce sealing problems from chemical or sediment materials coming between the disc and valve seat surfaces. By mounting the disc and valve seat surfaces at an acute angle to the axis of movement, the disc is freely rotatable and subject to the turning moment up until the time they are frictionally wedged together in a sealed valve closure position.
REFERENCES:
patent: 587439 (1897-08-01), Jenkins
patent: 786043 (1905-03-01), Luckett
patent: 1004845 (1911-10-01), Bohme
patent: 1324351 (1919-12-01), Haynes
patent: 1586345 (1926-05-01), Wilson
patent: 3542338 (1970-11-01), Scaramucci
patent: 4367766 (1983-01-01), Uomala
patent: 4373546 (1983-02-01), Krakovsky
Brown Laurence R.
Walton George L.
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