Suitable for a range of plumbing systems, this vertical check valve is crafted from brass for enhanced durability. The dual external threads provide a secure connection, while the valve's design ensures unidirectional flow. This prevents backflow, protecting your water supply and maintaining system. Features -Color:Golden -Material:Brass -Size:6.00X3.00X3.00cm/2.36X1.18X1.18in Thread Screw:1/2" -Durable brass construction: made from forged brass, this check valve offers exceptional durability and resistance to wear -Easy and secure installation: the precision thread design on both ends allows for quick and secure installation, making it a convenient choice for various plumbing and fluid systems -Increased: the dual external thread design provides a larger diameter connection, enhancing flow capacity and work efficiency while maintaining a compact and reliable valve structure -Prevents backflow: designed to permit media to only direction, this check valve effectively prevents backflow, ensuring the proper operation of fluid and pneumatic systems -Multiple applications: suitable for use in pump and compressor discharge, cooling towers, systems, pressure pumps, dust collection pumps, condensate lines, boilers, and other applications requiring backflow prevention Package list: 4 x Brass Vertical Check Valve