Watts 757-OSY 4 - Part of the 757 Series ZC100F-2NH Specifications Compatible Series or Model

Specifications Compatible Series or Model 709DCDA Compatible Size Used On 10 IN Kit Contents 2 Discs

UPC - 098268428964

Stainless steel spring

Z624-4NH-G

Watts 757-OSY 4 - Part of the 757 Series ZC100F-2NH Specifications Compatible Series or ModelThis 4 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. It is ideal for protection at cross connections identified as non health hazards and from other contaminants found at the service line