Backflow preventer

Product Overview

The Stainless Steel Threaded Low Resistance Backflow Preventer is a compact, high-efficiency device designed to prevent reverse flow and protect water systems from contamination while minimizing pressure drop. Constructed from 304 or 316L stainless steel, this valve features threaded connections (NPT or BSP) for easy installation in tight spaces, making it ideal for potable water, HVAC, and industrial applications.

Its optimized flow path ensures minimal resistance, reducing energy consumption and maintaining system efficiency. The dual check valve design with a pressure relief chamber guarantees zero backflow, complying with international standards for water safety.

Product Features

Low Resistance Design:Streamlined internal geometry reduces pressure drop (flow coefficient: Cv ≥ 1.5 for DN50).Ideal for systems requiring energy efficiency and high flow rates.

Threaded Connections:NPT (National Pipe Thread) or BSP (British Standard Pipe) threads for quick, tool-free installation.Compact design saves space in confined installations.

Durable Stainless Steel Construction:304 (1.4301) or 316L (1.4404) stainless steel resists corrosion in mildly aggressive environments.Electropolished (Ra ≤ 0.8 μm) or passivated surface finishes for enhanced durability.

Dual Check Valve System:Two independent check valves with an intermediate relief chamber ensure fail-safe backflow prevention.Leakage Class VI (ISO 5208) for zero reverse flow.

Compliance:Meets ASSE 1013, EN 1717, and ISO 2852 standards.

Operational Advantages

Energy Efficiency: Low pressure drop reduces pump workload and operating costs.

Corrosion Resistance: Suitable for mildly corrosive environments (e.g., chlorinated water).

Easy Installation: Threaded connections eliminate welding or flanging, saving labor and time.

Low Maintenance: Self-cleaning design and replaceable seals extend service life.