Rubber Disc For Ball Check Valve
| Casting |
304 Stainless Steel&Ductile Iron |
| Rubber | EPDM/NBR |
| Craft | Compression/Injection |
| Size range | DN40-DN500 |
| Shore hardnes | 70°±5° |
| Certificates approved | EN681-1/WRAS/ACS/KTW/DVGW |
The ball check valve mainly consists of a rubber coated ball and a valve body. The rubber ball is composed of a ball cover and a rubber ball. The rubber ball is processed into a ball core from stainless steel or ductile iron, and is lined with a rubber layer to maintain elasticity and strength. The working principle is that the rubber ball rolls in a short stroke inside the ball cover to achieve the opening and closing of the valve. When the water pump starts, the pressure of the water rushes open the rubber ball, causing it toroll to the right, and the check valve opens; After stopping the pump, due to the return water pressure ofthe system, the rubber ball is forced to roll to the left, reaching the closure of the check valve.The rubber coated ball needs to be tightly and evenly coated, and the ball should be rol ledrepeatedly with a short stroke inside the football cover.