Product Overview
The Copper Double Check Backflow Preventer is a high-performance, compact device designed to protect potable water systems from backflow contamination. Constructed from durable lead-free copper alloy, it is ideal for residential, commercial, and light industrial applications where water safety and reliability are paramount.
This backflow preventer features a double check valve assembly that ensures fail-safe protection against reverse flow, even in low-hazard applications. Its corrosion-resistant copper construction makes it suitable for use with potable water, while its compact design allows for easy installation in tight spaces.
Working Principle
The Double Check Backflow Preventer operates through two independent check valves:
First Check Valve: Prevents backflow by closing when downstream pressure exceeds supply pressure.
Second Check Valve: Acts as a secondary barrier, ensuring additional protection in case the first valve fails.
Shut-Off Valves: Integrated isolation valves allow for easy testing and maintenance without disrupting the water supply.
Key Features
Lead-Free Copper Construction:Compliant with NSF/ANSI 372 and Safe Drinking Water Act (SDWA) requirements.Resists corrosion and ensures long-term durability in potable water systems.
Double Check Valve Design:Two independently operating check valves provide redundant protection against backflow.Test cocks for easy field testing and maintenance.
Compact & Lightweight:Space-saving design ideal for residential and commercial installations.Easy to install in horizontal or vertical orientations.Low Pressure Drop:Optimized flow path minimizes pressure loss, ensuring efficient water supply.
Compliance & Certifications:Meets ASSE 1015, CSA B64.6, and NSF/ANSI 372 standards for backflow prevention devices.
Operational Advantages
Reliable Protection: Dual check valves ensure fail-safe backflow prevention.
Easy Maintenance: Test cocks allow for quick field testing without disassembly.
Corrosion Resistance: Copper construction ensures longevity in potable water systems.
Cost-Effective: Low installation and maintenance costs compared to RPZ devices.
Why Choose us
Compliance: Meets all major industry standards for backflow prevention.
Durability: Lead-free copper construction resists corrosion and extends service life.
Versatility: Suitable for residential, commercial, and light industrial applications.
Support: Comprehensive technical documentation and global availability.
| Nominal Diameter |
½” to 2″ (DN15 to DN50) |
| Nominal Pressure |
PN6-PN16，150 psi (10.3 bar) maximum working pressure |
| Temperature Range |
0.5℃-80℃ |
| Body Material |
Lead-Free Copper Alloy (C84400 or equivalent) |
| Seat Material |
EPDM or NBR (FDA compliant for potable water) |
| End Connections |
Threaded (NPT) or Flanged (optional) |
