Radially expandable tubular valve seal

Details Radially expandable tubular valve seal Radially expandable tubular valve seal

1978-07-27

1980-05-06

Nilson, Robert G.

Valves and valve actuation

With means to increase head and seat contact pressure

Fluid pressure

166332, F16K 318

Patent

active

042013640

ABSTRACT:
Disclosed is a valve to control fluid flow between a region exterior of a tubular member and a region interior of the tubular member. The valve includes a tubular seal element which is radially expandable to prevent flow and is radially contractible upon sliding movement thereof to permit flow and to reduce frictional resistance to such sliding movement.

REFERENCES:
patent: 1596049 (1926-08-01), Kienast
patent: 2608204 (1952-08-01), Dunn
patent: 3103948 (1963-09-01), Salmen
patent: 3355142 (1967-11-01), Kammerer

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