Pipeline safety valve

Details Pipeline safety valve Pipeline safety valve

1987-09-18

1988-09-06

Chambers, A. Michael

Fluid handling

Destructible or deformable element controlled

Destructible element

137458, 137461, 137463, 137466, 166323, F16K 1714

Patent

active

047685395

ABSTRACT:
A surface pipeline safety valve having a tubular member telescopically movable in the housing for controlling the movement of a valve closure member, a rod piston and cylinder assembly contacting and moving the tubular member in response to pressure in the bore of the housing in which the second side of the assembly is in communication with the atmosphere. High and low pressure responsive mechanisms for closing the valve. Seals in the assembly and high and low pressure responsive mechanisms are replaceable from the exterior of the housing.

REFERENCES:
patent: 3749119 (1973-07-01), Tausch et al.
patent: 3860066 (1975-01-01), Pearce et al.
patent: 3987849 (1976-10-01), Mott
patent: 4161980 (1979-07-01), Watkins
patent: 4527630 (1985-07-01), Pringle
patent: 4574889 (1986-03-01), Pringle
patent: 4577654 (1986-03-01), Pringle

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