WATTS® 800M4FR Freeze Resistant Pressure Vacuum Breaker, 1 in, FNPT, 150 psi, 7.5 fps, Bronze

41215 MFG #: 0388015
/ ea

WATTS® Pressure Vacuum Breaker, Freeze Resistant, Series 800M4FR, 1 in Nominal Size, 7.5 fps, 150 psi Working, FNPT, Bronze Body, Noryl® Plastic, 7-1/2 in H x 7-1/2 in W

Series 800M4FR Freeze Resistant Pressure Vacuum Breakers prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. It consists of bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, a bonnet with silicone rubber O-ring seal, a lightweight plastic disc float, a built-in relief valve to protect the internal components and the body from freezing, tee handle or lever handle shutoffs, and test cocks for winterization draining. Series 800M4FR is ideal in continuous pressure health hazard applications where exposure to sudden freezing conditions such as on irrigation systems and industrial process water systems can occur. Maximum Pressure: 150 psi (10.3 bar), Minimum Pressure: 15 psi (55kPa).

  • Features
  • Unique built-in relief valve relieves pressure caused by ice formation
  • Replaceable plastic seat
  • Easy maintenance of internal parts
  • O-ring bonnet seal for less possibility of fouling
  • Silicone seat disc for durability
  • Test cocks positioned for easy testing and winterization
  • Compact space saving design
  • Standardly equipped with tee handle quarter turn ball valve shutoffs 1/2 to 1 in, the 1-1/4 to 2 in feature lever handles
  • No special tools required for servicing
  • Bronze body for durability
  • Stainless steel springs
  • Celcon bonnet
  • Silicone Rubber vent disc
  • Polypropylene disc holder float
  • Silicone Rubber check valve disc
  • 33 to 140 deg F
  • Vacuum breakers are not designed, tested or approved to protect against backpressure backflow or water hammer shock
  • For protection against backpressure backflow, install Watts 909/009 Reduced Pressure Zone Backflow Preventer
  • For Protection against water hammer shock install a Watts Series 15 Water Hammer Arrestor utilizing good plumbing practice
  • Standard/Approvals: ANSI/ASSE 1020, Approved by the foundation for Cross-Connection Control and Hydraulic Research at the University of Southern California, CSA B64.12, IAPMO Listed, Manual Section 10. QC models are not ASSE 1020 approved, USC Manual Section 10, UPC Listed