VICTAULIC S014769100 1-1/2 769 BARE VLV ASY
Victaulic® FireLock NXT™ Deluge Check Valve, Series: 769, 1-1/2 in Nominal, Grooved, 300 psi Maximum, Specifications Met: ASTM A536, cULus Listed, Media: Water, Ductile Iron Body, Nitrile Bushing/Seat O-Ring, 1.9 in OD x 28.5 in H The patented Victaulic® series 769 firelock NXT™ precaution valve controls the water supply entry into the precaution system piping and sprinklers. The precaution system is normally supervised with pressurized air or nitrogen in order to detect any leaks in the system. The series 769 valve is a low differential, latched clapper valve that uses a unique, direct-acting diaphragm to separate system water supplies from precaution pipe sprinkler systems. The positive latching mechanism uses the supply water pressure from upstream (city side) of the main control valve to hold the clapper shut. When the water pressure in the diaphragm chamber is released the latch retracts from the clapper and the valve actuates. The low differential and unique latch and actuator design of the valve allow the valve to be self-resetting; therefore it is not necessary to remove the cover. The low differential design is not subject to water columns.
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