Watts 0072204 LF7RU2 2 3 4" Dual Check Valve, FNPT Union x FNPT, Lead Free 48 22 8393R so you can get it 34 122 so you can get it right the first time The Fluke 179 True rms Digital Multimeter is the industry standard troubleshooting tool for electrical and electronic systems Backflow Preventer Type: Dual Check Body Material: Lead Free Brass Body Pattern: Inline Inlet Connection Size: 3 4" NPT Inlet Connection Type: Female Threaded Outlet Connection Size: 3 4" NPT Outlet Connection Type: Female Threaded Lead Free: Yes Maximum Temperature: 180°F Maximum Working Pressure: 150 psi Minimum Temperature: 33°F Strainer: No with two plastic replaceable check valves