A mechanical valve is a manually or mechanically actuated valve that controls the flow of air, gas, or fluid based on physical input such as pressing, pulling, rotating, or contact with a machine part. Unlike electrically controlled valves, mechanical valves operate without electrical power, making them simple, reliable, and ideal for basic control and safety functions.

Mechanical valves are commonly used in pneumatic systems for limit detection, safety interlocks, emergency stop functions, and position sensing. They are widely applied in automation, material handling, packaging machines, and production lines where rugged, low-maintenance, and fail-safe control is required. Their simplicity and durability make them a trusted choice in harsh or power-sensitive environments.