WATTS® First Check Kit, For Use With: Model 009/LF009 1/4 to 3/4 in Reduced Pressure Zone Assembly, Domestic
This 1/4-3/4 IN first check replacement kit for series SS009M3 is used for checking for tightness against the reverse flow of polluted water from entering into the potable water supply due to backsiphonage and or backpressure. This kit consists of a check assembly and a cover O-ring.