Valves are mechanical devices that control the flow of fluids (liquids, gases, or slurries) by opening, closing, or partially obstructing passageways. There are various types of valves designed for different applications, and they are categorized based on their function, design, and the industry they serve. Additionally, valves are subject to various codes and standards that ensure their proper design, manufacturing, and use. Here are some common types of valves and relevant codes and standards:
- Pinch Valve: Codes and Standards: MSS SP-136
- Foot Valve: Codes and Standards: MSS SP-71, ASME B16.34
- Cryogenic Valve: Codes and Standards: BS 6364, ISO 28921-1
- Knife Gate Valve: Codes and Standards: MSS SP-81, MSS SP-135
- Plug Valve: Codes and Standards: API 599, API 6D, ASME B16.34
- Ball Valve: Codes and Standards: API 608, API 6D, ASME B16.34
- Plug Valve: Codes and Standards: API 599, API 6D, ASME B16.34
- Plug Valve: Codes and Standards: API 599, API 6D, ASME B16.34
- Bellows Seal Valve: Codes and Standards: API 594, ASME B16.34
- Diaphragm Valve: Codes and Standards: MSS SP-88, ASME B16.34
- Gate Valve: Codes and Standards: API 600, API 603, ASME B16.34
- Balancing Valve: Codes and Standards: ASHRAE 90.1, ASME B16.34
- Globe Valve: Codes and Standards: API 602, API 603, ASME B16.34
- Check Valve: Codes and Standards: API 594, API 602, ASME B16.34
- Needle Valve: Codes and Standards: API 600, API 602, ASME B16.34
- Safety Valve: Codes and Standards: API 526, ASME Section I and VIII
- Butterfly Valve: Codes and Standards: API 609, MSS SP-67, ASME B16.34
- Control Valve: Codes and Standards: ISA-S75.02, ANSI/ISA-75.08.01, IEC 60534
- Pressure Reducing Valve (PRV): Codes and Standards: API 526, ASME Section I and VIII
- Pressure Relief Valve (PRV): Codes and Standards: API 520, API 526, ASME Section VIII
