Non-return valve ( L )

Description of Non-return valve ( L )

A non-return valve, also known as a check valve, is a mechanical device that allows fluid (liquid or gas) to flow through it in only one direction. Here’s a detailed description of its key components and working principle:

Disc or Ball: The movable part that allows or blocks the flow of fluid. This can be a disc, ball, or other shaped element depending on the design of the valve.

Seat: The sealing surface against which the disc or ball rests to stop the flow when the valve is in the closed position.

Spring (Optional): Some non-return valves include a spring that helps to close the valve more quickly.

Working Principle
Forward Flow: When fluid flows in the desired direction (forward), it pushes the disc or ball away from the seat, opening the valve and allowing fluid to pass through.

Reverse Flow: When fluid tries to flow in the opposite direction (backward), the disc or ball is pushed against the seat, closing the valve and preventing any backflow.