Watts RK 009-CK1-SS 3/4-1 - Part of the RK-009 Series Sheet Drain it helps protect roof membranes

it helps protect roof membranes and assemblies while managing water flow from secondary sources

StrataGrid SGB30 is a high performance soil reinforcement product

bottom-loaded blowout proof stem and virgin PTFE seat

137 square inches of free area and a 4 inch no hub outlet

Watts RK 009-CK1-SS 3/4-1 - Part of the RK-009 Series Sheet Drain it helps protect roof membranesThis first check replacement kit 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 cover O ring. Features Factory Replacement Kit No special tools required for changing parts All parts are made of high quality materials First check kit Specifications Compatible Series or Model 009 Compatible Size