Viking® Model J-1 Alarm Check Valve, Flange x Flange, 4", Valve Only No Trim, 08238 14315M/B They come with 3/16" diameter

They come with 3/16" diameter attaching holes that are pre drilled for easy installation

#8-32 × 0

205 Degree 20409AE Fire Sprinkler Head

19840FE24 Fire Sprinkler Head

Viking® Model J-1 Alarm Check Valve, Flange x Flange, 4", Valve Only No Trim, 08238 14315M/B They come with 3/16" diameterThe Viking Model J 1 Alarm Check Valve serves as a check valve by trapping pressurized water above the clapper and preventing reverse flow from sprinkler piping. The valve is designed to initiate an alarm during a sustained flow of water (such as the flow required by an open sprinkler) by operating an optional water motor alarm and or alarm pressure switch. The valve is made suitable for use on variable pressure water supplies by adding the optional