Ball valve
• Not suitable for regulating flow except in some specialized ball valves
• Tight shutoff
• Low pressure drop when open
• Used for gas, liquids or slurries Butterfly valve
• Suitable for regulating flow
• Not suitable for tight shutoff
• Low pressure drop when open
• Used for low line pressure and large pipeline diameters
•
Wide range of service gas, liquids and slurries Gate valve
• Not suitable for flow regulation, only suitable for on or off
• Tight shutoff
• Low pressure drop
when open Diaphragm valve • Suitable for on/off or narrow range throttling control
• Tight shutoff
• Low pressure drop when open
• Used for corrosive fluids
and slurries Plug valve • Suitable for regulating flow
• Tight shutoff
• Quick opening
• High pressure drop when open
Non-return valve
• Allow flow in one direction only
• Self closing
• Low pressure drop when open
• Not suitable for reciprocating pump discharge
Pressure relief valve • Opens at predetermined pressure level
