Fluid sprinkling – spraying – and diffusing – With fixed support for or ground installed supply means – Embedded or buried sprinkler
Patent
1986-05-14
1988-04-12
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
With fixed support for or ground installed supply means
Embedded or buried sprinkler
239572, 137498, F16K 1704
Patent
active
047368896
ABSTRACT:
Disclosed herein is an automatic shut off valve for a sprinkler system which closes the water flow path whenever a sprinkler head becomes dislodged from a riser pipe. The shut off valve includes a valve seat and a valve element. The valve element is attached to the stem of a valve assembly, which further includes a flange positioned in the water flow path. The valve element assembly is held away from the valve seat by a coil spring into which the stem of the valve assembly extends. The stem further includes a plurality of openings to allow water flow into the center of the flange and out through openings in the stem and thereafter through the center of the valve seat. The spring is calibrated in length and compression such that, during normal water flow with a head attached, the spring is not sufficiently compressed to allow the valve element to contact the valve seat. However, when the head becomes dislodged, the water flow increases significantly, thereby further compressing the spring so that the valve element comes in sealed contact with the valve seat and thereafter, the pressure differential maintains the contact. A calibrated leak may be provided through the contacting valve element and valve seat to allow the valve element to be released after the head is reattached by merely closing off the sprinkler head opening.
REFERENCES:
patent: 2315911 (1943-04-01), Truedson
patent: 2699799 (1955-01-01), Wager
patent: 3786272 (1973-09-01), Hammond
patent: 3872884 (1975-03-01), Busdicker et al.
patent: 4078726 (1978-03-01), Walto
patent: 4131235 (1978-12-01), Lieding
patent: 4345593 (1987-08-01), Sullivan
Barron Harry W.
Kashnikow Andres
Weldon Kevin Patrick
LandOfFree
Shut-off valve for sprinkler system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shut-off valve for sprinkler system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shut-off valve for sprinkler system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1424583