A check valve prevents back flow of gas by allowing flow in only one direction. In essence, it acts like a one-way door for gases.
Here's a breakdown of how it works:
- Unidirectional Flow: Check valves are designed to open and allow gas to flow in a specific direction.
- Backflow Prevention: When the pressure of the gas tries to reverse, the check valve automatically closes, preventing the backflow. In the oil and gas industry, large check valves are used specifically for this purpose and are installed on the discharge end of pumps.
- Automatic Shut-Off: According to information related to the oil and gas industry, these valves automatically shut off flow when the pump is disengaged, which prevents the system from draining.
In summary, the check valve uses a mechanism that is sensitive to the direction of gas flow. When flow attempts to reverse, this mechanism activates, sealing the valve and stopping any backflow.
