Non-return valve with anti-pollution protection class EA, 1 1/4 inch, female thread RV277-11/4A

Non-return valve with pollution prevention – protection for installation and drinking water

This non-return valve with pollution prevention, class EA, with a 1 1/4 inch external thread, is a reliable solution to protect water installations from backflow. This is particularly important in systems with pressure regulators, filters and reduction-filtering stations. It meets the requirements of EN 1717 standard, guaranteeing the safety of drinking water in central supply systems.

The valve is made of dezincification-resistant brass (DZR), which ensures its durability and corrosion resistance. An EPDM rubber seal further increases its reliability. The design with a conical valve with a low opening pressure (10 mbar) minimizes pressure loss in the installation.

Construction and application

The valve is designed for mounting in any position, which facilitates its installation in various configurations. Its compact design allows it to be used even in limited spaces. It is designed to operate at temperatures from 2°C to 65°C and withstands a maximum working pressure of 25 bar, ensuring safe operation for a long time. The Kvs value of 28 indicates a high flow rate of the valve, which translates into efficient operation of the entire system.

The valve has a DVGW quality mark for water, confirming its compliance with strict German standards. This gives you the certainty that the product meets the highest standards of quality and safety. Excellent tightness is guaranteed by a special L-shaped seal and double guidance of the poppet (axial and lateral) assisted by a closing spring.

Key features and benefits

• Protection against backflow: Protects the water installation from contamination and damage caused by water flowing backwards.
• Durability and resistance: Made of DZR brass ensures long-term operation without corrosion.
• Versatility: Possibility of mounting in any position facilitates installation in various conditions.
• Low pressure loss: The conical valve design minimizes flow resistance, positively affecting system performance.
• Compliance with standards: Meets the requirements of EN 1717 standard and has a DVGW quality mark for water, guaranteeing safety and reliability.
• Warranty: 5 years from the date of manufacture gives confidence in long-term satisfaction with the purchase.
• Wide operating temperature range: From 2°C to 65°C allows the valve to be used in various environmental conditions.