800M4FR
Freeze Resistant Pressure Vacuum Breaker Backflow Preventers with Freeze Sensor
Series 800M4FR freeze resistant pressure vacuum breakers include a freeze sensor for use with SentryPlus Alert® technology to monitor temperature nearing the freezing point. The sensor is activated with the BMS/IMS Freeze Sensor Connection Kit to relay a signal to building or irrigation management systems, helping facility personnel take actions that reduce or eliminate PVB replacement and repair. Freeze alerts are distributed according to the BMS/IMS application.
This series prevents the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. Ideal for continuous pressure health hazard applications where exposure to sudden freezing conditions can occur in irrigation systems and industrial process water systems. Maximum pressure: 150 psi (10.3 bar), Minimum pressure: 15 psi (55kPa).
To learn more visit: https://www.watts.com/freeze-detection
Features
- Sensor on PVB signals when temperature nears the freezing point
- Freeze alerts feature available with add-on connection kit for irrigation management systems
- Freeze alerts help extend use of the PVB device by reducing damage and repair
- Unique built-in relief valve in plastic float protects assembly during sudden freeze conditions by relieving pressure caused by ice
- Compact and designed for easy maintenance
- Test cocks are positioned at lowest point of the valve for easy winterization draining
- O-ring bonnet seal reduces possibility of fouling
- Bronze body construction, silicone rubber check valve disc, plastic check valve seat, stainless steel springs, and a lightweight plastic disc float
Literature
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- 800M4QT, LF800M4QT, 800M4FR, LF800M4FR - Repair Kits Parts Breakdown
- Flyer - Freeze Detection
- Installation Instructions - 800M4QT, LF800M4, 800M4FR, LF800M4FR
- Installation Instructions - BMS/IMS Freeze Sensor Connection Kit - Watts
- Price List - Backflow Prevention Repair Kits & Service Parts
- Specification Sheet - 800M4FR
- Specification Sheet - 800M4FR (French)
- Specification Sheet - 800M4FR (Spanish)
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |