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Wilkins 1-420XL Pressure Vacuum Breaker Assembly with Integral Anti-Freeze Relief Valve

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$ 130.95
SKU 1-420XL

This Lead Free Wilkins Series 420XL pressure vacuum breaker assembly is designed for installation on potable water lines to protect against back-siphonage of contaminated water into the potable water supply. Supplied with an integral anti-freeze relief valve to reduce the risk of valve damage under intermittent, non-seasonal freezing conditions. Designed for use under continuous pressure. Assembly shall provide protection where a potential health hazard exists.

Standards Compliance
  • ASSE® Listed 1020
  • IAPMO® Listed
  • CSA® Certified
  • Approved by the Foundation for Cross Connection Control and Hydraulic Research at the University of Southern California

  • Main valve body: Cast Bronze ASTM B 584
  • Elastomers: Silicone (FDA Approved), Buna Nitrile (NSF Listed)
  • Polymers: Polypropylene (FDA Approved), Delrin (NSF Listed), Noryl (NSF Listed)
  • Springs: Stainless Steel, 300 Series

Features Sizes:  1"

Maximum working water pressure 175 PSI

Maximum working water temperature 140°F

Hydrostatic test pressure 350 PSI

Threaded connections ANSI B1.20.1

Integral anti-freeze relief valve Replaceable thermoplastic modular cartridge


Specifications        Install Manual