For example, there is a single-acting pneumatic gate valve that needs to be closed when it loses air, and is equipped with a side-mounted handwheel. When equipped with a handwheel mechanism, should it be considered: should the spring force be overcome when the handwheel is opened? In addition, when the spring closes the valve, should we consider the problem of the gate valve spool stuck? Do you consider adding flow regulation when exhausting to slow down the speed of closing the valve?

Of course, the design and use of the handwheel requires normal and safe operation with or without media. The elastic force of the spring must be considered, which is mainly used to consider factors such as the torque of the handwheel components.

Whether the spool will be stuck when the valve is closed mainly depends on the structure of the valve. If the structure of the valve is well established, whether the valve will be stuck depends on whether the design of the valve is reasonable, whether the working conditions are normal, whether the operation is correct, etc.

Whether to consider adding flow adjustment and slowing down the speed of closing the valve needs to be decided in combination with the process requirements and operations with the process specialty, and it can be completed by adding relevant accessories.