Valve fluid control device and fluid backflow protection device

Details Valve fluid control device and fluid backflow protection device Valve fluid control device and fluid backflow protection device

1989-07-14

1991-10-15

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137312, 13762547, F16K 2500, F16K 324, F16K 504, F16K 2402

Patent

active

050565494

ABSTRACT:
A valve designed for the prevention of leakage between two or more ports when the valve is in its off position and where leakage occurs at a port seal as shown and described. In this design, each port is sealed when the valve is in the off position, and an open area vented to atmosphere is provided between each of the port seals, whereby if a seal should leak, the fluid will pass to the atmosphere by way of a vent, and will not come in contact with any other sealed port in the valve. The vented chamber separates each port seal from other port seals in the valve. The vented chamber is exterior to the valve and is not a part of the inside of the valve member such as a passage therethrough.

REFERENCES:
patent: 1648486 (1927-11-01), Larsen
patent: 1708273 (1929-04-01), Larsen
patent: 2038132 (1936-04-01), Robinson et al.
patent: 2484622 (1949-10-01), Hartman
patent: 2631001 (1953-03-01), Griswold
patent: 3101740 (1963-08-01), Ray
patent: 3191628 (1965-06-01), Kirkwood et al.
patent: 3459212 (1969-08-01), Campion
patent: 3512546 (1970-05-01), King
patent: 3605792 (1971-09-01), Westbrook
patent: 3658093 (1972-04-01), Kirkwood
patent: 3724487 (1973-04-01), Hunter
patent: 3827285 (1974-08-01), Grove
patent: 4067352 (1978-01-01), Halpine
patent: 4108199 (1978-08-01), Bonafous
patent: 4314579 (1982-02-01), Wheatley et al.
patent: 4326671 (1982-04-01), Goguen
patent: 4327765 (1982-05-01), Wilson et al.
patent: 4410001 (1983-10-01), Goguen
patent: 4427177 (1984-01-01), Constantinescu et al.
patent: 4478236 (1984-10-01), Neuzeret et al.
patent: 4506697 (1985-03-01), Marchant
patent: 4589438 (1986-05-01), Breda
patent: 4681133 (1987-07-01), Weston
patent: 4749002 (1988-06-01), Lembser
PCT International Publication No. WO84/02547, Published Jul. 5, 1984.

Affiliated with

Also associated with

Rating

Valve fluid control device and fluid backflow protection device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve fluid control device and fluid backflow protection device , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve fluid control device and fluid backflow protection device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-983736