Watts 957N-DOSY 4 - Part of the 957 Series Z100F-3NH Waterproof Integration & Debris Protection:

Waterproof Integration & Debris Protection: Features that support secure bonding to the waterproofing membrane combined with a grate/strainer design that helps block debris from entering the drain

and an 8″ × 8″ square adjustable top fitted with a heel-proof ductile iron grate and standard no-hub outlet for versatile piping connections

Specifications Brand Watts Diameter 14 IN Inlet Connection Size 1 IN Inlet Connection Size-Metric 25 MM Inlet Connection Type Male Threaded Lead Free YES Maximum Operating Temperature-Fahrenheit 240 Maximum Working Pressure-PSI 150 Mount Type Free Standing Tank Acceptance 14

Z400BL-5BL-PC

All options are chemically stable across a pH range of 2–13 and designed to perform in a wide range of site conditions

Watts 957N-DOSY 4 - Part of the 957 Series Z100F-3NH Waterproof Integration & Debris Protection:This 4 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