The non-return valve with plastic closing elements, 1 1/2", nut–nut connection is a reliable component for domestic water installations. It protects the system against backflow and supports stable operation of heating or cooling circuits using water or water-glycol mixtures.
Designed for a nominal pressure of 16 bar and a maximum operating temperature of 70°C, the valve performs well in demanding conditions of central heating and utility water systems. The DN 40 connection size fits larger pipelines, so the product suits both main lines and key distribution points in the installation.
The body made of CW617N – 4MS brass offers high resistance to corrosion, while the ABS closing element works precisely and quietly. The nut–nut connection with G 1 1/2 thread simplifies assembly and disassembly during service, and the nickel-free design supports use in systems where contact with drinking water is expected.
The non-return valve is a solid choice for professional installers and demanding homeowners looking for a durable DN 40 check valve for water and up to 50% glycol systems.