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Watts 757N NRS 8 Part of the 757 Series Inserta Tee This 6 inch lead free This 6 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements 2 Body Material Lead Free Cast Copper Silicon Alloy Brand Watts Corrosion Resistant Coating No Disc Material Elastomer EAN 098268571707 Gauge Option Gauge Tapping High Pressure Reduced Pressure Range Not Applicable High Pressure Reduced Pressure Setting Not Applicable Inlet Connection Size 1 2 IN Inlet Connection Type Pex Crimped Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Operating Temperature Fahrenheit 180 Maximum Working Pressure BAR 27