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The Watts GRD-640 is a stainless-steel metered overflow drain designed for green roof and planter applications where controlled secondary drainage is required
built-in air gap
UPC - 098268613667
Specifications Adjustable Reduced Pressure Range 10 to 35 Adjustable Reduced Pressure Range-BAR 1
7 bar ArmorTek Technology Yes Body Material Ductile Iron Brand Watts Coating Epoxy Coated Using ArmorTek Technology EAN 098268652345 Inlet Connection Size 6 IN Inlet Connection Type Flanged Joint Lead Free YES Maximum Operating Temperature-Fahrenheit 160 Maximum Working Pressure-PSI 250 Outlet Connection Size 6 IN Outlet Connection Type Flanged Joint Part Number 1SE00044 Pilot Control System Fitting Material Stainless Steel Pilot Control System Tubing Material Stainless Steel Series LFM115 Trim Material 316 Stainless Steel Valve Style Mustang Warranty Name Watts Warranty - ACV ArmorTek Submittal Package - Automatic Control Valve LFM115
Watts 957N-DOSY 8 - Part of the 957 Series ADA Pad The Watts GRD-640 is aThis 8 inch N pattern reduced pressure zone assembly backflow preventer helps prevent the reverse flow of fire protection substances and 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. This extremely compact and lighter than a traditional designed assembly is approved for horizontal installation
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