Special requirements for process media valves for pipe media and valve stems

Valve and valve automation products designed to handle radioactive waste and valve stems, in order to successfully automate the process, it is important to ensure that the valve itself meets the specific requirements of the process and the media in the pipeline. Usually the production process and process media can determine the type of valve, the type of spool, and the structure and materials of the trim and valve.

After the valve is selected, the next step is to consider the requirements of the automation, that is, the choice of the actuator. The actuator can be easily considered in two basic types of valve operation.

1. Rotary valve (single rotary valve)

These valves include: plug valves, ball valves, butterfly valves, and dampers or baffles. Actuators that require a torque of 90 degrees for the required torque

2. Multi-turn valve

These valves can be non-rotating lift stems or rotating non-lifting rods, or they require multiple turns to drive the valve to the open or closed position. Such valves include: through valves (stop valves), gate valves, knife gate valves, and the like. As an option, a linear output pneumatic or hydraulic cylinder or membrane actuator is also used to drive the valve.