Description
Keep your potable water system safe and compliant with the Caleffi 573503A Dual-Check Backflow Preventer, a durable and code-certified solution designed to stop contaminated water from flowing back into the clean water supply. This compact brass backflow preventer is ideal for residential and light commercial plumbing and HVAC applications where cross-connection control and health code compliance are required.
Key Features
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Dual-Check Continuous Pressure Protection: Offers reliable two-stage check valve action to block backflow caused by backsiphonage or backpressure, protecting drinking water from contamination.
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Atmospheric Vent Design: Features an open vent between the checks to help relieve backpressure and improve overall protection performance.
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Lead-Free Brass Construction: Made from DZR low-lead brass for corrosion resistance, long service life, and compliance with potable-water safety standards.
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Code-Certified: Meets ASSE 1012/CSA B64.3 standards along with NSF/ANSI 372 (lead-free compliance) and applicable plumbing codes, making it suitable for both U.S. and Canadian installations.
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Standard 3/4″ FNPT Female Connections: Threaded connections make installation and service straightforward in common plumbing systems.
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Robust Performance Ratings: Withstands up to 175 psi working pressure and temperatures from 32 °F to 210 °F, fitting most potable water and HVAC system requirements.
