Tight shut-off valve with flow control

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

1985-10-28

1986-10-21

Weakley, Harold W.

Fluid handling

Systems

Multi-way valve unit

13762532, 13761416, 251121, 251123, 251163, 251188, F16K 510

Patent

active

046179640

ABSTRACT:
A flow control apparatus for use primarily in plug-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 invention utilizes a globe valve-type throttling plug which requires no special mechanism to coordinate the throttling motion of the valve. Only the plug and lower plate of the valve body are modified relative to existing plug valves to achieve a unique flow control capability. The plug of the invention provides distinct inlet and outlet channels separated by a flow control passage which may be selectively obstructed by a fixed flow control element which is an integral portion of an inverted lower trunnion extending from the bottom plate of the valve body. The vertical position of the plug with the plug rotated for alignment with the inlet and outlet of the valve, determines the degree of flow through the plug.

REFERENCES:
patent: 2595160 (1952-04-01), Miller
patent: 2612340 (1952-09-01), Laurent
patent: 3526249 (1970-09-01), Baustian
patent: 3863674 (1975-02-01), Scaglione
patent: 4410109 (1983-10-01), Morrell

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