The soft seal valve means the valve body and the valve disc/ball is not metal to metal. Commonly the valve body/valve seat is non-metal in design. Soft seal is generally used for normal temperature and pressure pipelines. Soft seal is the seal between metal and non-metal, such as nylon tetrafluoroethylene, the manufacturing standard is the same.

Soft seal means that the sealing material embedded in the valve seat is non-metallic material. Because the soft sealing material has certain elasticity, the requirements for machining accuracy are relatively low for hard seal.

The selection of soft and hard sealing ball valves is mainly based on the process medium, temperature and pressure. Generally, the medium containing solid particles or with wear or temperature higher than 200 degrees is the best choice for hard sealing. When the diameter is greater than 50, the valve pressure difference is large, and the valve opening torque is also considered. When the torque is large, the fixed hard sealing ball valve should be selected. The sealing grade of soft and hard sealing can reach 6 Class.

Soft Seal Gate Valve

Soft Seal Butterfly Valve

Soft Seal Valve