Rotary vacuum valve

Details Rotary vacuum valve Rotary vacuum valve

1989-07-21

1990-05-01

Rivell, John

Fluid handling

Systems

Multi-way valve unit

251161, 251180, F16K 2500, F16K 2900

Patent

active

049210157

ABSTRACT:
Indexing rotary vacuum valve in which second stage vacuum at torr p.sub.i is applied through aligned ports of one valve member juxtaposed to another, originating a force tending to bring the two tightly together, but wet lubrication is not needed since gas under supra atmospheric pressure is admitted to an interface chamber in the lower valve member lifting the upper one to establish a slight clearance, sealed against ingress of atmospheric pressure. First stage vacuum at torr p.sub.o greater than p.sub.i is applied at the interface around the vacuum ports, to prevent leakage of the second stage vacuum.

REFERENCES:
patent: 2751034 (1956-06-01), Ringo et al.
patent: 2918938 (1959-12-01), Kimball
patent: 3554224 (1971-01-01), Kirk et al.
patent: 4156437 (1979-05-01), Chivens
patent: 4509555 (1985-04-01), Stirbis
patent: 4564043 (1986-01-01), Trittler

Affiliated with

Also associated with

Rating

Rotary vacuum valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotary vacuum valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary vacuum valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-823973