Check the listing for details. Senninger Irrigation Inc. Low Flow 3/4" FPT Pressure Regulator. Condition: New. Listed at 17.84 USD. Special note: This pressure regulator is not designed to operate under static (constant) pressure. It must be installed after any valves or timers to operate correctly. Using this item under static pressure will eventually weaken the internal spring and cause the regulator to fail. The low flow PRL pressure regulator is ideal for drip irrigation and solid set application which often have lower flow rates. Also can be used in pivot and mechanical move applications where a PRL is used at each applicator. This pressure regulator is a 3/4" FPT inlet X 3/4" FPT outlet. Please Note: The pressure regulator shall maintain the predetermined operating pressure provided that the inlet pressure is at least 5 PSI above the expected outlet pressure, but not exceeding the maximum inlet pressure.Features:100% pressure tested, to ensure quality and performanceVery low hysteresis and friction lossesCan be installed above or below groundPatented tamper-proof designNo external metal parts for excellent corrosion resistance2 year warranty on materials, workmanship and performance