Tight shut-off valve with flow control element

Details Tight shut-off valve with flow control element Tight shut-off valve with flow control element

1986-06-30

1987-05-05

Chambers, A. Michael

Fluid handling

Systems

Flow path with serial valves and/or closures

13761417, 13763021, 251113, F16K 1114

Patent

active

046623949

ABSTRACT:
A flow control apparatus for use primarily in plug-type and ball-type valves provides means for continuously varying the flow rate of fluid through the valve while using the same operator that is used to control the open and closed position of the valve. The upper trunnion is integrally connected to a butterfly member and connected to the plug by a mechanical linkage comprising a latch rod and a roller latch with corresponding detents in the valve body and upper trunnion, respectively. The butterfly member controls the fluid flow with the plug in the open position in response to 90 degrees of overtravel in the same operator that controls the position of the plug.

REFERENCES:
patent: 1620464 (1927-03-01), Huff
patent: 2809662 (1957-10-01), Ray
patent: 2944568 (1960-07-01), Jonson
patent: 2997057 (1961-08-01), Toth
patent: 3430658 (1969-03-01), Self
patent: 3526249 (1970-09-01), Baustrair
patent: 3860032 (1975-01-01), Rogers
patent: 4230154 (1980-10-01), Kalbfeisch

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