Slow close hydrant check valve

Details Slow close hydrant check valve Slow close hydrant check valve

1977-05-11

1978-11-28

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Destructible element

137285, 137551, 251 50, 285 3, E03B 904, F16K 1736, F16K 3700

Patent

active

041271424

ABSTRACT:
A wet barrel hydrant check valve has a body containing a dash-pot assembly connected to a flapper valve, spring biased towards the closed condition. A sandwich flange fixed to the hydrant has a member holding the flapper out of the flow passageway, the flange being joined in a break-away connection to the valve body so that upon hydrant upset, as by vehicle impact, the hydrant and holding member are dismounted from the valve body, releasing the flapper into the flow path of escaping water for dash-pot controlled, gradual closure of the valve minimizing water hammer in the line.

REFERENCES:
patent: 1169401 (1916-01-01), Hodgson
patent: 2054561 (1936-09-01), Greenberg

Affiliated with

Also associated with

Rating

Slow close hydrant check 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 Slow close hydrant check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slow close hydrant check valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-974101