Watts Regulator - 1" RPZ Backflow

The Watts LF825Y 1" RPZ Backflow Preventer provides the ultimate mechanical protection against high hazard (toxic) fluid contamination in potable water systems. Its lead-free construction ensures compliance with state and federal regulations, making it ideal for use in industrial plants, hospitals, irrigation systems, boiler feeds, and chemical plants. Designed with spring-loaded Y-type check valves and an internal relief valve, the LF825Y maintains a minimum differential pressure to safeguard potable water from dangerous backflow.

Key Features:

• Provides mechanical protection of potable water against hazardous cross-connections
• Modular relief valve allows for easy in-line maintenance
• Meets ASSE Standard 1013, AWWA Standard Code C511, and CSA Standard B64.4
• Spring-loaded Y-type check valves for low head loss
• Lead-Free construction complies with installation requirements
• Hydraulic sensing passages are internally located for streamlined operation
• Replaceable seat rings for all sizes

Construction & Durability:

• Lead-Free cast copper silicon alloy body and caps
• Diaphragm to seat area ratio of 10:1 for optimized performance
• Modular design allows servicing without removing the valve body
• Shutoff valves and test cocks are full-ported ball valves
• Designed to prevent backflow under both flow and no-flow conditions

Performance & Functionality:

• Rated up to 175 PSI (12.1 bar) with a water temperature range of 32°F to 140°F (0°C - 60°C)
• Maintains a zone pressure at least 5 PSI lower than inlet pressure during operation
• Automatically discharges if the differential pressure drops to 2 PSI or less
• Low head loss operation with spring-loaded check valves
• Internally located hydraulic sensing passages for reliable function

Ease of Installation & Use:

• 12" minimum clearance required for relief valve discharge
• Modular design for quick and easy in-line maintenance
• End connection complies with NPT ANSI / ASME B1.20.1 standards
• Can be installed in vertical or horizontal positions
• Drainage options available for relief valve discharge

Technical Specifications:

• Size: 1"
• Operating Pressure Range: Up to 175 PSI (12.1 bar)
• Temperature Range: 32°F to 140°F (0°C - 60°C)
• End Connection: NPT ANSI / ASME B1.20.1
• Material: Lead-Free cast copper silicon alloy
• Check Valves: Spring-loaded Y-type
• Certifications: ASSE 1013, AWWA C511, CSA B64.4

Installation & Application:

• Recommended for industrial plants, hospitals, irrigation systems, and chemical plants
• Ideal for potable water protection against high hazard contamination
• Can be installed indoors or outdoors with proper drainage
• 12" clearance required for proper relief valve discharge
• Protect from freezing and thermal water expansion during installation

Compatibility & Optional Accessories:

• Compatible with BMS and IMS for automated monitoring
• Works with standard NPT threaded piping systems
• Connection kits available for integration with monitoring systems