Control valve assembly

Details Control valve assembly Control valve assembly

1978-07-31

1980-02-12

Nilson, Robert G.

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

137599, 1375992, 13761417, 1376375, 251188, F16K 1112

Patent

active

041878728

ABSTRACT:
A control valve assembly for controlling fluid flow in a flowline having a housing with a normally operative flow control structure and bypass structure therein for providing independent first and second flow paths for allowing controlled fluid passage through the housing from the flowline through the first and second flow paths, as desired.

REFERENCES:
patent: 1744143 (1930-01-01), Roberts
patent: 2323480 (1943-07-01), MacDougall
patent: 2590569 (1952-03-01), Peterson
patent: 2652225 (1953-09-01), Peterson et al.
patent: 2664263 (1953-12-01), Stadler
patent: 2769456 (1956-11-01), Atkinson
patent: 2880748 (1959-04-01), Elsey
patent: 3456679 (1969-07-01), Graham

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