Anti-contamination valve class BA, DN50, FIG.406 406E050B34

Anti-contamination valve – system protection and safe operation

The BA-class anti-contamination valve, with a DN50 diameter and marking FIG.406, is a reliable solution for protecting water supply systems against backflow and contamination. Its design, based on a reduced pressure zone, enables effective monitoring of system operation—essential for maintaining hygiene and the integrity of the entire installation.

Construction and application

This valve features a compact design, facilitating installation even in confined spaces. The silicone seal ensures long-term tightness and resistance to external environmental factors. Constructed from high-quality materials, it is designed for use in potable water systems where protection against water reversal and potential contamination is required. The internal cylindrical gas thread BSPP-G (ISO 228-1) ensures easy connection to existing infrastructure.

Benefits for installer and user

• Versatility: Ideal for protecting installations in residential, commercial, and industrial buildings.
• Easy installation: Compact design and standard thread simplify and accelerate installation.
• System monitoring: The reduced pressure zone allows for valve operation control and rapid detection of potential issues.
• Long-term reliability: Use of high-quality materials guarantees maintenance-free operation over an extended period.
• Contamination protection: Prevents contaminants from entering the system, safeguarding users’ health.
• Backflow isolation: Effectively blocks reverse water flow, protecting equipment and the installation from damage.

The BA-class anti-contamination valve is an investment in safety and long-term efficiency of the water supply system—for both professionals installing hydraulic systems and end-users who value comfort and hygienic water use.