Profile: Greenmark Sprinklers and Irrigation Supplies is an online irrigation & sprinkler supply store for contractors & homeowners. We offer automatic drains, backflow preventers, drip irrigation equipments, sensors, sprinklers, filters, pumps, remotes, risers, tools, valves, wire & electrical, valve boxes and manifolds. PVC pipe end of line drains are glued to PVC pipe at the end of the line with the drain wicking pad oriented downward. It acts like a PVC elbow with automatic drain built in. This is used to install the last sprinkler head on a line. Check valve assemblies prevent the backflow of pollutants that are objectionable but not toxic from entering into the potable water supply. They feature a ductile iron body and all stainless steel check assemblies. The Wilkins 1″ 975XL reduced pressure backflow preventer is designed for installation on potable water lines to protect against both back siphonage and backpressure of contaminated water into the potable water supply. Pressure vacuum breaker assemblies are used to protect against health hazard and non health hazard backsiphonage conditions in industrial plants, cooling towers, laboratories, laundries, swimming pools & lawn sprinkler systems. Febco 765 pressure vacuum breakers are available in sizes from 1/2 inches through 2 inches. It includes one check valve and one air opening port in one assembly. The lightweight poppet seals air opening under minimum flow conditions. These are designed for minimum head loss. The engineered plastic bonnet protects valve bodies from freeze damage. We also carry a selection of the most commonly requested replacement solenoids directly from the manufacturers.