The control valve design standards provide guidelines for the materials of construction, dimensions, connections, and performance requirements for control valves.

Here are some of the most commonly used design standards for control valves:

1. ISO 5752 Standard
   • This is an international standard that defines the dimensions and connection sizes for control valves.
   • It provides guidelines for the design of control valves, including the dimensions and connections of the valve body, bonnet, stem, and actuator.
2. API 6D Standard
   • This is an American Petroleum Institute standard that covers the design and manufacture of pipeline and pipeline valve components.
   • It provides guidelines for the design and manufacture of control valves, including the materials of construction, valve body and bonnet design, and actuator design.
3. ASME B16.34 Standard
   • This is an American Society of Mechanical Engineers standard that covers valve pressure-temperature ratings.
   • It provides guidelines for the design of control valves, including the pressure-temperature ratings, materials of construction, and valve body and bonnet design.
4. MSS SP-67 Standard
   • This is a standard developed by the Manufacturer’s Standardization Society (MSS) that covers the design of control valves.
   • It provides guidelines for the design of control valves, including the materials of construction, valve body and bonnet design, and actuator design.
5. NAMUR NE 107 Standard
   • This is a standard developed by the North American Instrument Manufacturers Users’ Roundtable (NAMUR) that covers the interface between control valves and process control systems.
   • It provides guidelines for the design of control valves, including the communication between the valve and process control system, response time, and accuracy.