Did you know the water pressure from a typical water source can be excessive for a drip irrigation system? This leads to emitters and fittings popping off, and the strain can damage your drip system. Put a pressure regulator in place to lower the incoming water pressure and keep it at a constant rate-even when the water pressure varies. This pressure regulator is preset at 15 PSI and has a 3/4 in. FPT inlet and outlet. Connects to sprinkler and drip irrigation systems. Made of high-impact acrylonitrile butadiene styrene (ABS) treated with UV inhibitors.