On/off sprinkler head with temperature responsive exhaust port v

Details On/off sprinkler head with temperature responsive exhaust port v On/off sprinkler head with temperature responsive exhaust port v

1980-02-26

1983-01-18

Weidenfeld, Gil

Fire extinguishers

Sprinkler heads

Shut off valve

169 42, A62C 3720

Patent

active

043687822

ABSTRACT:
An on/off sprinkler has a body defining an extinguishant inlet and outlet and is divided internally by a diaphragm defining with the body an intermediate chamber and normally isolating the inlet from the outlet. The diaphragm has a drain orifice allowing an extinguishant pressure balance on both sides of the diaphragm. There is an exhaust port from the intermediate chamber which is normally closed by a valve controlled by a heat sensitive device serving upon attainment of a predetermined temperature value to open the valve thus causing extinguishant exhaustion from the intermediate chamber which results in diaphragm movement to place the inlet in communication with the outlet and sprinkler operation.

REFERENCES:
patent: 1771826 (1930-07-01), Taylor
patent: 2661805 (1953-12-01), Lim
patent: 3048676 (1974-11-01), Doherty, Jr.
patent: 3791450 (1974-02-01), Poitras
patent: 3924687 (1975-12-01), Groos
patent: 3991829 (1976-11-01), Johnson
patent: 4099573 (1978-07-01), Sahara

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