Watts 800M4-QT-FZ 3/4 R 3/4 in. Bronze Anti-Siphon Pressure Vacuum Breaker with Quarter Turn Shutoff and Tee Handles, Freeze Sensor

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About This Product

This 3/4 in. anti-siphon pressure vacuum breaker backflow preventer is designed to stop contaminated water from reversing into the potable water supply due to back siphonage. Ideal for continuous pressure systems in irrigation and industrial applications, it ensures safety when water enters equipment at or below its flood rim. Constructed with a durable bronze body, it features a silicone rubber check valve disc, stainless steel springs, and a bonnet with a silicone O-ring seal. A freeze sensor, compatible with SentryPlus Alert® technology, helps monitor ambient temperature and signal when it nears freezing, making it suitable for cold-weather installations.

Highlights

• Integrated freeze sensor supports SentryPlus Alert® technology to detect low ambient temperatures 

• Freeze alert capability enabled via optional add-on connection kit (sold separately) 

• Rugged bronze body for long-lasting durability 

• Acetal bonnet serves as a freeze plug, reducing risk of freeze-related damage 

• Female NPT inlet and outlet with quarter-turn shutoff valves for easy installation and operation 

• Convenient internal access for maintenance 

• Test cocks positioned for easy winterization and performance testing 

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