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Product Description Check valve with compression fittings by Unidelta Improve your piping system with the compression check valve from Unidelta. This high-quality valve with two compression fittings is ideal for PE pipes and provides a reliable non-return solution for your water installations. Features: Material: Made of robust PP polypropylene for durability and corrosion resistance. O-ring: Made of NBR (nitrile rubber) for a secure seal. Connection: 2-way clamp for easy and safe installation. Dimensions: 20mm Length: 161 mm Diameter: 50 mm 25mm Length: 180 mm Diameter: 60 mm 32mm Length: 201 mm Diameter: 68 mm 40mm Length: 246 mm Diameter: 80 mm Temperature resistance: Up to 60 C Working pressure (PN): Maximum 16 bar at 20 C. Approvals: Certified according to DVGW, KIWA, WRAS. Colour: Body in black, coupling nut in blue. Advantages: Easy installation: the PE pipes are chamfered on both sides, inserted into the clamp and screwed tight. Flexible installation: The conical closing mechanism is pressed against the inlet side by an internal spring and closes the valve. Thanks to the spring pressure, you can install the check valve in either a vertical or horizontal position. Universal use: Suitable for PELD, PEHD, PE40, PE80, PE100 pipes. Safe operation: Reliably prevents the backflow of water, protecting your equipment from possible damage. Areas of application: Media: Ideal for transporting drinking water, clean process water, rainwater and chlorinated water. Note: Not suitable for media containing salt (the internal spring made of V2A stainless steel can rust in corrosive environments). Marking: The flow direction is marked on the non-return valve. Additional information: Maintenance-free: The valve requires no maintenance, which saves time and effort. Example of use: Prevent water from flowing back due to hydrostatic conditions.