“Industrial valves, also known simply as “valves,” are equipment used to start, stop, and regulate the flow in piping systems. The main functions of valves include opening and closing the flow path (similar to a switch), as well as increasing or decreasing the flow rate (regulating the flow rate), adjusting pressure and temperature, isolating one part of the system from others, and protecting the system. In critical situations, valves can be used to establish one-way flow and to reverse the direction of the flow.”
The classification of valve types is determined by various criteria, including valve performance in the system, movement mechanism of the blocking element, actuator energy source, connections, and type of blocking element.
According to these criteria, there are various types of valves including:
- Types of valves based on the movement mechanism of the flow blocking element
- Linear valve
- with the rotary actuator
- with the axial actuator
- Rotary valve
- Rotary valve with more or less than 90-degree rotation
- Rotary valve with more or less than 90-degree rotation
- Types of valves based on performance in the system
- Isolation valve
- Control valve or regulating valve
- Safety valve
- Check Valve
- Valve with special function
- Types of valves based on the type of connections
- Threaded valve or screw valve
- Flanged valve
- Welded Valve
- Socket Weld Valve
- Wafer Valve and Lug Valve
- Types of valves based on the mechanism of the operator
- Manual Valve
- Powered Valve
- Automatic Valve
- Types of valves based on the type of blocking element
- Gate Valve
- ball valve
- plug valve
- piston valve
- diaphragm valve
- Butterfly valve
- Choke Valve
- Globe Valve
- Needle valve
- Pressure relief valve
- Check Valve
