Different Kinds of Check Valves

Butterfly Check Valve

• Butterfly check valves regulate the flow of gas or liquid using a disk. They are commonly used in ventilation systems.
  
  

Swing Check Valve

• Swing check valves are the most common in the market. They have a straight-body design or a Y-pattern.
  
  

Tilting Disk Check Valve

• Tilting disk check valves have a design like that of swing check valves, but are different in that they use a disk without a hinge.
  
  

Stop Check Valve

• Stop check valves have an external mechanism that stops the flow of liquid or gas, irrespective of the direction or pressure of the liquid or gas.
  
  

Piston Check Valves

• Piston check valves, which are also referred to as lift check valves, operate under a mechanism in which pressure or an upward stream of fluid causes the disc to be lifted off its seat. This enables the liquid to flow to the outlet.