3/4" Wilkins 420XL Pressure Vacuum Breaker Assembly w/ Integral Anti-Freeze Relief Valve (Lead Free)34-420XL 3/4" Wilkins 420XL Pressure Vacuum Breaker Assembly w/ Integral Anti-Freeze Relief Valve (Lead Free)
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This Wilkins Series 420 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.
- 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
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