Zurn Wilkins 420XL PRESSURE VACUUM BREAKERS feature all-bronze bodies and an anti-freeze relief valve, reducing the risk of damage during non-seasonal freezing conditions. Low lead compliant, they also have a thermoplastic modular cartridge, allowing for quicker repairs, and ANSI B1.20.1 threaded connections. ASSE listed 1020 and certified to NSF/ANSI 372. Hydrostatic test pressure: 350 psi. Maximum working temperature: 140°F. Maximum Working Pressure: 175 psi. USC FCCCHR approved.
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