Control valves automatically regulate pressure and/or flow rate, and are available for any pressure. If different plant systems operate up to, and at pressure/temperature combinations that require Class 300 valves, sometimes (where the design permits), all control valves chosen will be Class 300 for interchange-ability. However, if none of the systems exceeds the ratings for Class 150 valves, this is not necessary.
Globe valves are normally used for control, and their ends are usually flanged for ease of maintenance. Depending on their type of supply, the disk is moved by a hydraulic, pneumatic, electrical or mechanical actuator. The valve modulates flow through movement of a valve plug in relation to the port(s) located within the valve body. The valve plug is attached to a valve stem, which, in turn, is connected to the actuator.
Related Industry Knowledge
- Butterfly valve history
- Butterfly valve structure features
- Butterfly valve advantages
- Ball valve
- Ball valve history
- Ball valve advantages
- Ball valve classification
- Three-way ball valve features
- Regulating valve
- Regulator valve classification
- Why Control Valves used?
- Control valve Principles of Operation
- Control Valve Arrangement
- Why a Steam Control Valve is used i...
- What is the principle of operation ...
- Requirements for the use of regulat...
- What general terms are the pneumati...
- Application of pneumatic regulating...
- What are the industrial application...
- How do three-way control valves work?