铜质双止回阀

Type：DH11X

Subtitle：Residential Double Check Backflow Preventer

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.

标签：黄铜单向阀

类别：倒流防止器

工作条件建筑施工, HVAC system, 水厂

产品概览	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.

主要功能	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.

运行优势	Reliable Protection: Dual check valves ensure fail-safe backflow prevention. 易于维护： 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	遵守规定： Meets all major industry standards for backflow prevention. Durability: Lead-free copper construction resists corrosion and extends service life. 多功能性： Suitable for residential, commercial, and light industrial applications. Support: Comprehensive technical documentation and global availability.

中型

水

工作条件

建筑施工, HVAC system, 水厂

总结

The Copper Double Check Backflow Preventer is a reliable, cost-effective solution for protecting potable water systems from backflow contamination. Its lead-free copper construction, dual check valve design, and compact form factor make it an ideal choice for residential, commercial, and irrigation applications. With compliance to ASSE 1015, CSA B64.6, and NSF/ANSI 372 standards, this device ensures water safety and system reliability, providing peace of mind for engineers, contractors, and end-users alike.

产品参数

公称直径	½" to 2" (DN15 to DN50)
额定压力	PN6-PN16，150 psi (10.3 bar) maximum working pressure
温度范围	0.5℃-80℃
机身材料	Lead-Free Copper Alloy (C84400 or equivalent)
座椅材料	EPDM or NBR (FDA compliant for potable water)
末端连接	Threaded (NPT) or Flanged (optional)