10" threshold

This rating indicates the factory-set delay timing

Frequent tripping typically indicates a serious combustion issue

A lockout often indicates either a faulty C6456513 pressure switch

Watts 0887291 Repair Kit 10" thresholdThe Watts 0887291 RK009CK1 1 2" First Check Repair Kit is a field ready solution for maintaining Reduced Pressure Zone (RPZ) Assemblies within the Watts 009 Series and LF009 Series. Designed for 1 4" to 1 2" backflow preventers, this backflow preventer repair kit includes the essential check assembly and cover O ring required to restore first check functionality. When a device exhibits continuous dripping from the relief valve, it often signals debris