Features High Security: The backflow valve prevents unwanted backflow of liquid. With just a few turns, the valve is sealed with screws, ensuring an absolutely pure water system. Excellent Aluminum Alloy: The spring loaded check valve is made of excellent aluminum alloy, which is not easy to wear and tear, and operates reliably for a long time. Easy installation: This check valve is very easy to install, it is internally and externally threaded, when installing it, you only need to align the threaded port and screw it on the water pipe. Wide Application: Check valves are designed for use in fluid systems to prevent reverse flow of liquids or pneumatic systems to prevent reverse flow of compressed air, and can be used on variable frequency pumps. Suitable For High Loads: This check valve is so robust that the checker can withstand pressures of up to 16 bar, keeping the water pressure even and constant. Specification: Item Type: 5 Way Check Valve Material: Aluminium Alloy Nominal Diameter: DN32 Thread Inner Diameter: Approx. 39mm / 1.5in Thread Outer Diameter: Approx. 40.5mm / 1.6in Nominal Pressure (PN): 16MPa Connection Form: Male Thread, Female Thread Driving Method: Hydraulic Control Type ( Channel Position ): Straight Through Type Structure Type: Spring Type Lift Compound Package List: 1 x Check Valve Package List 1 x Check Valve