Plug valve equipped with pressure equalization means

Details Plug valve equipped with pressure equalization means Plug valve equipped with pressure equalization means

1984-01-26

1986-03-25

Nilson, Robert G.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

13763021, 251368, F16K 506, F16K 3900

Patent

active

045776628

ABSTRACT:
Disclosed is a plug valve comprising displacement means (5) allowing equalization of upstream and downstream pressures existing on the plug (3), said equalization means being applied before the plug has been moved.

REFERENCES:
patent: 297986 (1984-05-01), Goldsmith
patent: 541716 (1895-06-01), Callahan
patent: 2879800 (1959-03-01), Komrosky
patent: 3030982 (1962-04-01), Navara

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