Anti-contamination valve class BA, DN25, FIG.406 406E025B34

Anti-contamination valve – system protection and safe operation

The BA-class anti-contamination valve, with a nominal diameter DN25 and marking FIG.406, is a critical component for safeguarding water systems against contamination and backflow. Its design, based on the proven Zetkama technology, ensures reliable performance and long service life. This model is especially suitable for applications requiring high hygiene standards and protection against potential water contamination.

This valve combines the function of a backflow isolator with a reduced-pressure zone and monitoring capability. As a result, it not only protects the installation but also enables continuous monitoring of its condition. The compact design facilitates installation even in confined or hard-to-reach areas. The silicone seal ensures tightness and resistance to various media.

Construction and application

The BA-series anti-contamination valve is designed for use with clean liquids. Manufactured from high-quality materials, it provides durability and corrosion resistance. Connection is made via an internal cylindrical gas thread BSPP-G (ISO 228-1), 106 mm in length, enabling seamless integration with existing infrastructure. It is essential to install the valve exclusively in a horizontal position – this is a mandatory condition for proper operation and full protection.

The net weight of the valve is 4 kg, reflecting its robust construction and high-quality materials. It is an essential component wherever protection against contamination of potable or process water and prevention of media backflow into the supply source are priorities. Thanks to its design, the valve reduces pressure, minimizing the risk of damage to system components.

Key features and benefits

• Contamination protection: Prevents contaminants from entering the water system, safeguarding user health and system integrity.
• Backflow isolation: Eliminates the risk of media reversal, which is especially critical in potable water or process fluid systems.
• Compact design: Enables easy installation even in space-constrained environments.
• Durability and reliability: Constructed from high-quality, corrosion- and mechanical-damage-resistant materials.
• Easy installation and operation: Simple design facilitates both installation and subsequent maintenance.
• Versatile application: Ideal for water systems in residential, industrial, and commercial buildings.
• Standards compliance: Ensures safe operation in accordance with applicable regulations (detailed normative information available in technical documentation).