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Soft-blob field with ribbon-tape seals — cool ice-lab sheet for description and returns.
Applicable for liquid and steam service to protect check valves
ductile iron disc
the unit includes a 4″ diameter ABS perforated standpipe for subsurface drainage and an 8″ diameter fixed top with heel-proof ductile-iron grate for surface flow capture
UPC - 098268428964
Specifications Compatible Series or Model 709DCDA Compatible Size Used On 10 IN Kit Contents 2 Discs
Watts 757-OSY 4 - Part of the 757 Series ZC100F-2NH Applicable for liquid and steamThis 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
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