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with multiple color and decorative grate options
is UL and FM approved and is used in fire service protection applications in conjunction with a water spray system
supporting consistent flow and easier maintenance
The flanged design with a flashing clamp ensures secure integration with the waterproofing membrane
users may need to modify it for slip resistance
Watts 957N-DOSY 8 - Part of the 957 Series nwgf with multiple color and decorativeThis 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