Freeze-proof, pollution free valve

Details Freeze-proof, pollution free valve Freeze-proof, pollution free valve

1979-04-20

1981-08-11

Schwadron, Martin P.

Fluid handling

Hydrant type

Expansible chamber operated by valve actuator for draining...

137282, 137301, 251 36, E03B 904

Patent

active

042828953

ABSTRACT:
A valve is located below the frost line in the water supply line for a drinking fountain or the like. When the valve is opened, a piston is raised by the water pressure, compressing a spring. When the valve is closed, the spring retracts the piston, sucking the water in the line down below the frost line. Water is retained within the valve and not drained into the surrounding earth. Hence, danger of pollution is reduced.

REFERENCES:
patent: 2630130 (1953-03-01), Murdock et al.
patent: 4096877 (1978-06-01), Arledge

Affiliated with

Also associated with

Rating

Freeze-proof, pollution free 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 Freeze-proof, pollution free valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Freeze-proof, pollution free valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1021953