WATTS® 757 Double Check Valve Assembly With OSY Gate Valve, 3 in, 304 Stainless Steel

259192 MFG #: 0111511
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WATTS® Double Check Valve Assembly, Series: 757, 3 in Nominal Size, 175 psi, 33 to 140 deg F, 304 Stainless Steel Body, 31-3/4 in L

Series 757, 757N Double Check Valve Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70% lighter than traditional designs. Series 757, 757N is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and back siphonage.

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  • Features
  • Videos
  • Extremely compact design
  • 70% lighter than traditional designs
  • 304 (SCH 40) stainless steel housing and sleeve
  • Groove fittings allow integral pipeline adjustment
  • Patented tri-link check provides lowest pressure loss
  • Unmatched ease of serviceability
  • Available with grooved butterfly valve shutoffs
  • Available for horizontal, vertical or N pattern installations
  • Replaceable check disc rubber
  • Sizes 2-1/2, 3 and 4 in available with quarter-turn ball valve shutoffs
  • The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight
  • EPDM, silicone and Buna-n elastomers
  • Noryl® stainless steel tri-link checks
  • Reversible silicone or EPDM check discs
  • Bronze body nickel plated test cocks
  • 300 series stainless steel pins and fasteners
  • Stainless steel spring
  • OSY: UL/FM outside stem and yoke resilient seated gate valves
  • Notice: the information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer, you are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product
  • Standard/Approvals: ASSE 1015, cCSAus B64.5 Certified, cULus Listed, FM Approved, NSF Approved
  • WARRANTY: 1 Year Limited