Features: Material: Brass + Steel Wire Thread: 1/2''/3/4''/1''; Medium: natural gas, oil, water. The bottom valve is usually used on the water inlet pipe of the self-priming primer pump (pump), mainly to prevent water from backflow (anti-backflow), and also to filter the sundries into the pump. It has dual features and is easy to use and install. The installation of the check valve can prevent the medium from flowing back, reverse rotation of the pump and the drive motor, and the discharge of the medium in the container, which plays the role of pumping smoothly and saving energy loss. Note: Although the bottom valve is equipped with an anti-clogging screen, the bottom valve is generally suitable for cleaning media. The bottom valve should not be used for medium with excessive viscosity and particle size. Ball valves are widely used for mechanical equipment, industrial equipment, water supply and drainage equipment, such as gardens, water pumps, corner rainwater tanks, outdoor faucets, rainwater bucket connection, rainwater collectors, water pipes, etc. Specification: Material: Copper + Steel Wire Interface: 1/2''/3/4''/1''Size: As the picture showPackage Included: 1x Brass Check ValveNote: Please allow 1-2cm errors due to manual measurement, please make sure you do not mind before ordering. Due to the difference between different monitors, the picture may not reflect the actual color of the item.