Piston-expanded metallic seal for side door well valve

Details Piston-expanded metallic seal for side door well valve Piston-expanded metallic seal for side door well valve

1983-06-10

1984-05-15

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 12, 277125, 277236, 166118, 166332, F16J 1540, E21B 2300

Patent

active

044484275

ABSTRACT:
A valve having a lead seal for controlling flow through a port in the housing of the valve in which the seal is moved from an out of the way position into a position preventing flow through the port. The seal is metallic and by using a piston-type seal expander in combination with a ball catcher pressure exerted within the valve on a ball may be exerted over the entire area defined by the piston to set the seal under very high pressures, after which the ball and its catching tube may be released from the piston and removed from the valve.

REFERENCES:
patent: 3051243 (1962-08-01), Grimmer et al.
patent: 3200837 (1965-08-01), Brown
patent: 3208532 (1965-09-01), Chenoweth
patent: 3375013 (1968-03-01), Grantom
patent: 4288082 (1981-09-01), Setterberg
patent: 4415038 (1983-11-01), Schmuck

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