Anti-contamination valve class BA, DN40, FIG.406 406E040B34

Anti-contamination valve – system protection and safe operation

The BA-class anti-contamination valve with nominal diameter DN40 is a reliable device designed to protect water supply systems against contamination and backflow. Its reduced pressure zone design and monitoring capability make it an ideal solution for both installers and end-users who value safety and long-term functionality. Constructed from brass, it ensures durability and corrosion resistance.

Construction and application

This valve combines the functions of a backflow isolator with pressure reduction, minimizing the risk of system contamination. Its compact design facilitates installation even in confined spaces. The silicone seal guarantees long-term leak-tightness and reliable operation. Designed for use with clean liquids, the valve must be installed in a horizontal position. Its primary purpose is to prevent water from the installation from flowing back into the potable water supply source—this is especially critical in public buildings, hospitals, and laboratories.

Key features and benefits

• BA Class: Provides the highest level of contamination protection in compliance with applicable standards.
• DN40 (1 1/2 inch) diameter: Optimal flow capacity for medium-flow installations.
• Internal cylindrical gas thread BSPP-G (ISO 228-1): Enables easy and leak-tight installation in standard systems. Connection length: 146 mm.
• Reduced pressure zone: Lowers the risk of system damage caused by excessive pressure.
• Monitoring capability: Allows for regular inspection of valve condition and rapid detection of potential faults.
• Durable construction: Brass construction ensures corrosion resistance and extended service life.
• Net weight: 9 kg – reflects robust construction and high-quality materials.
• Easy installation and operation: Simplified design enables quick setup and minimizes maintenance requirements.

The Zetkama Fig 406 anti-contamination valve is an investment in the safety of your water supply system and the peace of mind that comes from knowing it operates correctly.