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  • Watts 957-OSY-FS 10" Stainless Steel 175 PSI Reduced Pressure Zone Backflow Preventer
  • Watts 957-OSY-FS 10" Stainless Steel 175 PSI Reduced Pressure Zone Backflow Preventer

Watts 957-OSY-FS 10" Stainless Steel 175 PSI Reduced Pressure Zone Backflow Preventer

mpn: F111589 SKU: WAT957OSY100 UPC: 098268479447
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$24,770.04
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Manuals (2)

Manual_Installation Instructions Manual_Specification Sheet
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Description

The Watts 957-OSY-FS 10" Reduced Pressure Zone Assembly is a stainless-steel backflow preventer engineered to protect potable water supplies from contamination caused by backpressure or backsiphonage. Its compact, lightweight design, flood-sensor readiness, and durable construction make it ideal for health-hazard cross-connections, service-line protection, and facility-wide potable water systems.

Features

  • 304 stainless steel housing and sleeve for corrosion resistance and durability.
  • Torsion-spring dual-check modules for reliable, low-pressure-loss protection against backflow.
  • Bottom-mounted cast stainless steel relief valve for maintenance-friendly service.
  • Resilient seated outside-stem-and-yoke (OSY) gate shutoff valves on inlet and outlet.
  • Grooved-joint inlet and outlet connections for easier pipe alignment and installation in tight spaces.
  • Compact design — significantly lighter than traditional backflow preventers — simplifies installation and servicing.
  • Option for flood detection via built-in port, compatible with building management system (BMS) or cellular alert kits.

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