Automatic shut-off valve and method of operation thereof

Details Automatic shut-off valve and method of operation thereof Automatic shut-off valve and method of operation thereof

1976-06-09

1978-12-05

Schwadron, Martin P.

Fluid handling

Processes

137 73, 137270, 137498, 137519, 13753327, 251 65, F16K 1728, F16K 1738

Patent

active

041281055

ABSTRACT:
A valve having a closure element in the form of a tapered plug normally maintained by gravity on a vertical rod extending loosely into a bore in the plug. Flow of fluid through the valve in excess of a predetermined rate acts on a flow-responsive surface of the plug to move the latter into engagement with a valve seat, thus blocking further flow. The construction is particularly suited to close control of the flow rate at which closure of the valve occurs. The size, shape, weight and position of various elements influences the magnitude of the flow rate required for closure and may be tailored to effect closure repeatedly at a virtually exact desired flow rate. One embodiment includes means for selectively changing the shape of the flow-responsive surface, and thereby the flow rate at which closure occurs. In the preferred embodiment, the closure element is retained in the closed position by a permanent magnet until intentionally reset by external means, such as the application of a back pressure from the downstream side of the closure element sufficient to overcome the magnetic attraction. The invention also resides in the method of operating the preferred embodiment of the valve by effecting reset with application of a back pressure from external means.

REFERENCES:
patent: 1026471 (1912-05-01), Siefken
patent: 1986358 (1935-01-01), Rasbridge
patent: 2167938 (1939-08-01), Clemmons
patent: 2745725 (1956-05-01), Ward et al.

Affiliated with

Also associated with

Rating

Automatic shut-off valve and method of operation thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic shut-off valve and method of operation thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic shut-off valve and method of operation thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-282428