How the valves are classified based on their function?

Isolation

• Gate valve
• Ball valve
• Plug valve
• Piston valve
• Diaphragm valve
• Butterfly valve
• Pinch valve

Regulation

• Globe valve
• Needle valve
• Butterfly valve
• Diaphragm valve
• Piston valve
• Pinch valve

Non- return

• Check valve

Special purpose

• Multi- port valve
• Flush bottom valve
• Float valve
• Foot valve
• Line blind valve
• Knife gate valve