On/off sprinkler

Details On/off sprinkler On/off sprinkler

B - Operations, Transporting

05

B

236/2, 299/27, 1

B05B 1/26 (2006.01) A62C 37/08 (2006.01)

Patent

CA 1146044

ABSTRACT An on/off sprinkler has a body defining an extinguishant inlet and an 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.

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