Check valve with anti-pollution protection, internal thread type EA291NF 2 inch 149B2215

Non-return valve with pollution prevention – protection of the installation and safety of use

The non-return valve with pollution prevention, type EA291NF, is a reliable solution for protecting water and gas installations against backflow of medium. Its design allows for supervision, a port for checking the tightness of the seal, and a port for draining the installation riser, making it a versatile element of the system. Made of high-quality materials, it ensures long-lasting and trouble-free operation.

Construction and application

The valve is designed for installation in systems where protection against contamination of drinking water or gas is required. Its internal threaded connection with a diameter of 2 inches (DN50) facilitates assembly and disassembly. The brass body guarantees corrosion resistance, and the sealing unit made of POM (polyacetal) and NBR (nitrile) gasket ensure tightness and reliability. The ability to mount in any position is an additional advantage, making it easier to adapt to specific installation conditions.

The valve finds application in both residential and industrial buildings, as well as in irrigation systems or heating installations. It is particularly recommended where there is a risk of medium flowing back to a source of contamination. Thanks to its design, it minimizes pressure losses and operates quietly, without generating water hammer. It has two control ports with caps DN1/4’’, allowing easy control of the valve's technical condition.

• Protection against backflow: prevents the medium from flowing back to the supply source, protecting it from contamination.
• Versatility: the ability to mount in any position makes it easier to adapt to different installation conditions.
• Durability: the brass body provides corrosion resistance and long life.
• Reliability: the POM sealing unit and NBR gasket guarantee tightness and trouble-free operation.
• Easy control: control ports allow quick assessment of the valve's technical condition.
• Quiet operation: no generation of water hammer ensures comfortable use.
• Small pressure losses: the optimal design minimizes flow resistance.

The valve meets the requirements of PN-EN 13959 and ISO 228, NF E 03-005 standards, which confirms its high quality and safety of use. The maximum working pressure is 1.0 MPa, and the operating temperature is up to 80°C. The connection length is 150 mm and the net weight is 1.36 kg.