In-line fluid flow control valve with apparatus for and method o

Details In-line fluid flow control valve with apparatus for and method o In-line fluid flow control valve with apparatus for and method o

1989-09-11

1991-12-24

Walton, George L.

Valves and valve actuation

Mechanical movement actuator

Screw

137 15, 137318, 251282, 251326, 251327, 251329, F16K 300, F16K 3314, F16K 4300

Patent

active

050745263

ABSTRACT:
The present invention provides an in-line fluid flow control valve adapted and designed for installation in an existing fluid line carrying fluid under pressure, without the necessity of interrupting flow of fluid through such line, and further provides apparatus for installation of the valve of the invention and a method of installation of the valve of the invention. The valve of the invention generally comprises a valve body having a sleeve to be placed around the fluid line and a neck extending outwardly from the sleeve, a double acting and hydraulically balanced valve member to seal the fluid line and the neck of the valve body, and a valve actuating assembly to operate the valve and to maintain proper alignment of the valve member. The installation apparatus of the invention generally comprises a hollow body releasably attachable to the neck of the valve body, having a closure valve to selectively separate the interior of the hollow body from the neck of the valve body and the interior of the fluid line, a cutting device to penetrate the fluid line, and a reaming device to precisely size the line penetration and prepare the inner surface of the fluid line for efficient seating of the valve member thereon.

REFERENCES:
patent: 2420849 (1947-05-01), Wilson
patent: 2757897 (1956-08-01), Cline
patent: 2815187 (1957-12-01), Hamer
patent: 3135284 (1964-06-01), Magos
patent: 3240227 (1966-03-01), Burkholder
patent: 3948282 (1976-04-01), Yano
patent: 4051863 (1977-10-01), Still
patent: 4162058 (1979-07-01), Ellis
patent: 4483514 (1984-11-01), Kennedy
patent: 4532957 (1985-08-01), Battle et al.

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