Description
- Short body, small volume and low weight, the shafts extending from both sides of the check valves make it easy to install the counterweight and lever on the right or left side of the check valve both horizontally and vertically. The valve moves freely depending on the flow. The opening of the flapper depends on the flow rate. The position-adjustable weight adapts to the working conditions. Metal-to-metal or rubber sealing ring design. Maintenance-free design.