Watts 1/2 LFN45BM1 Valve, 1/2" Pressure Reducing Valve Brass MPT x FPT - Lead Free Double union inlet & outlet connections (option DU) Integral stainless steel strainer Thermoplastic seat & cage Lead Free cast copper silicon alloy body construction Serviceable in line Bypass feature controls thermal expansion pressure Sealed spring cage on all models for accessible outdoor or pit installations