Non-return valve BA295S-1/2A Flow isolator, threaded, 1/2 inch, with union fittings

Backflow prevention valve – reliable protection for your installation

This backflow prevention valve, flow isolator BA295S-1/2A, is a key element of any water installation where protection against contamination and backflow is a priority. Made of dezincification-resistant brass (DZR), it guarantees durability and reliability even in harsh conditions. Its compact design and 1/2 inch threaded connections facilitate installation and integration with existing infrastructure.

Design and application

The BA295S-1/2A valve is designed to protect potable water systems from contamination caused by backflow or backpressure. It meets the requirements of EN 1717 standard (category 4), making it an ideal solution for both residential, industrial and commercial buildings. Thanks to the built-in filter at the inlet, it effectively stops impurities, and the possibility of replacing the valve insert simplifies servicing. The mounting position should be horizontal, with the drain valve facing downwards.

Advantages and benefits – protection and ease of use

• Triple protection: a unique design with two check valves and a drain valve divides the internal space into three pressure zones, providing maximum protection against contamination.
• Low pressure drop: a nominal flow rate of 2.4 m³/h with a low pressure drop (1 bar) guarantees efficient operation of the installation without performance losses.
• Simple servicing: replacing the valve insert instead of the entire valve significantly reduces operating costs and simplifies repairs.
• Durability and reliability: made of dezincification-resistant brass (DZR) ensures long-term protection against corrosion and mechanical damage.
• 5-year warranty: the manufacturer provides a 5-year warranty from the date of manufacture, confirming the high quality of the product.
• Compliance with standards: meets the requirements of EN 12729 standard (except BA295S-1B) and has approvals for contact with drinking water, in accordance with KTW recommendations.
• Low noise level: approved by TÜV LGA for low noise level (group 1 without restrictions).

This valve is not only a protective element, but also an investment in the long-term efficiency and safety of the water installation. Its compact dimensions (connection length 135 mm, length with screw connection 195 mm) allow for installation even in limited space. Pressure class PN 10 and maximum inlet pressure of 10 bar ensure safe operation under standard conditions. Kvs value of 2.4 further confirms its high flow rate.