Air pneumatic mechanical toggle/exhaust switch valves for manual control of pneumatic lines. Available in the TAC and TAC2 series and multiple port and configuration variants to match common pneumatic layouts. Why choose these valves Manual, mechanical actuation gives reliable, predictable control of airflow when electric or solenoid actuation is not required or practical. Integrated exhaust function lets you vent a circuit quickly and safely, useful for stopping actuators or depressurizing a line for maintenance. Multiple model and port configurations (see list below) make it easy to select a valve that matches your system layout without adapters or workarounds. Models and variants included TAC3V and TAC231V series TAC3V variants labeled 3P and 3S TAC4V variants labeled 4P TAC231V variants labeled 31P TAC241V and variants labeled 41V and 41P Note: Model labels correspond to the TAC and TAC2 product families and their 3way/4way or port/position variants to suit different pneumatic circuits. Key attributes Functionality: Manual toggle operation with exhaust/venting capability to control and release air pressure in a pneumatic line. Compatibility: Designed for use with standard compressed air systems and common pneumatic fittings; suitable for industrial and workshop pneumatic installations. Size and form factor: Compact, manually operated valve bodies and toggle levers that fit into control panels or inline piping where manual control is required. Performance: Provides immediate mechanical switching and exhaust for fast depressurization and direct, tactile control of air flow. Durability: Built for repeated manual operation in demanding environments; suitable for maintenance, test benches, and intermittent control tasks. Typical applications / use cases Cylinder control and manual override: Use the valve to manually extend or retract pneumatic cylinders for setup, testing, or occasional operation without wiring solenoids. Line isolation and safe bleed: Isolate a section of a pneumatic circuit and vent it through the exhaust when performing maintenance, repairs, or adjustments. Production line and process control: Provide operatorcontrolled air supply or emergency venting for fixtures, clamps, or pneumatic tooling where handson control is required. What to consider when selecting Choose the right model designation (3V/4V, 3P/4P, 31/41 variants) to match the number of ports and the way you need air routed in your circuit. Confirm mechanical mounting and toggle orientation fit your panel or piping layout. Verify compatibility with your pneumatic line fittings and tubing sizes. What you get A mechanical toggle/exhaust pneumatic valve from the TAC or TAC2 families (models and port variants as listed) ready for integration into pneumatic systems that require manual control and exhaust capability. If you need help identifying the correct model for your application, compare the port/position labeling on your existing valve or system diagram to the TAC/TAC2 model codes to match function and layout.