ZSFG type of deluge valve I. Introduction and main purposes: ZSFG type of deluge valve is a lever-type valve identified components using anti-reset function with one-way valve, a mechanical transmission, electric, manual and other open methods, to the sprinkler system water supply pipe network at the same time, sound and light alarm system to signal an alarm, fire control, fire-fighting purposes. Widely used in dry, wet rain and fire alarm systems can also be composed of foam and foam series sprinkler system.