U-PVC Spring Weighed Check Valves can be used vertically or horizontally. The ball and spring in the spring types which allow the flow is controlled. The ball that is located in the direction of the flow, compress the spring with the effect of the flow and provides the movement of the fluid. The flow which is coming from the opposite direction closes the channel by means of the ball and the flow is blocked. Our products that is U-PVC Spring Check Valves are available in both DIN and ASTM standards. Our DIN standard is between 50mm - 90mm. In our ASTM standard, these are in between 1-1/2inch and 3inch. The product with a glass chamber is also available. It is suitable if adding as it as a PC when ordering. Our operating pressure is PN16 in all sizes. General Features of U-PVC double sided internal threaded Spring Check Valve : *Long-lasting, durable and environmentally friendly. *High resistance to chemical substances. * The color, smell and taste of the water that it carries do not change. * It is waterproof. *Easy to install and easy to clean. *Easy to clean *Has a spring system. *There is also the option of glass observation. UPVC SPRING CHECK VALVE USAGE AREAS: * Pool systems * Clean water pipe systems