Multi-purpose G1-1/2 PVC safety check valve for swimming pools, 50 mm. Check valve with viewing lens. Swimming pool filter accessories for spas.

[Perspective Mirror Design] Check valve with a transparent mirror pipe, allowing you to observe the internal movement. The check valve itself is corrosion-resistant and durable, and easy to install. [Long Service Life] Made of durable ABS and PVC, this water pipe check valve is sturdy and durable, with a long service life. [Functional Use] The controller valve can prevent unpredictable damage to the pump due to liquid backflow and prevent recontamination of the filtration equipment due to backflow. [Versatile] This check valve is mainly suitable for installation in swimming pools and on the water outlet pipe of the water pump in the spa machine room. [Wide Application] This pool pump valve is also suitable for water pump piping in integrated filtration equipment, automatic drainage piping in filtration equipment, etc. Product Description Specification: Item Type: Non-return valve. Material: ABS, PVC. Size: approx. 16.5 x 11 cm / 6.5 x 4.3 inches. Weight: approx. 439g / 15.5oz. Caliber specification: G1-1/2 (1.5 inches). Place of use: swimming pool, spa. Scope of application: It can be used to install water supply and drainage pipes of swimming pools and spas with acidic or alkaline fluids at a temperature of 5 ℃ ~ 50 ℃. The check valve relies on the liquid flow itself to automatically open or close the sealing baffle, thus creating a directional liquid flow state. It is mainly suitable for the water outlet pipe of the pump in the machine room installed in swimming pools and spas, the water pump pipe of integrated filtration equipment, the automatic drainage pipe of filtration equipment, etc. Main functions: A. Prevent unpredictable damage to the pump due to liquid backflow. B. Prevent the filtration equipment from being re-contaminated due to liquid backflow. Package list: 1 x check valve