6mm 8mm 10mm 12mm 14mm 16mm 19mm 25mm 32m Hose Barb Brass Vertical Lift Spring Check Valve is a quality one-way non-return valve designed for water systems. Made of durable brass material, this valve is suitable for hoses with diameters ranging from 6mm to 32mm. Its vertical lift design ensures smooth water flow, while the spring-loaded mechanism prevents backflow and water hammer. Compatible with various water systems and applications, this valve is a reliable choice for controlling water flow.