The most basic function of a valve is to regulate the flow of fluids such as water within the piping system. Each valve type has a its own defining work mechanism that sets it apart from other valves. Generally, the common functions among valves include:
- Start or stop the flow based on the condition of the valve
- Control the direction of flow within the pipes
- Adjust the flow rate and pressure within piping system
- Throttle flow rates within the pipes
- Relieve pressure and vacuum within the piping system