The 3R21008 1/4 BSP Air Pneumatic Switch Control Valve is a hand lever operated device designed for manual actuation of pneumatic circuits. It provides a straightforward, tactile method to start or stop air flow without the need for electrical power, making it suitable for lowcomplexity control points and maintenance tasks. Key benefits Immediate manual control: leveroperated action gives direct, tactile actuation for quick on/off control. Power operation: no electrical power required, reducing wiring complexity and improving safety in hazardous or damp environments. Standard connections: 1/4 inch BSP threading enables easy integration with common pneumatic lines and components. Simple installation: compact design supports straightforward mounting and fast setup in existing systems. Reliable manual switch function: designed to provide a clear and repeatable control point within pneumatic circuitry. Key attributes Model: 3R21008 Type: Air pneumatic switch control valve Actuation: Hand lever operated, manual pull Connection size: 1/4' BSP Function: Switch control valve for pneumatic circuits Material: Not specified in the product title/specifications Port size: 1/4' BSP connections Performance: Not specified in the product title/specifications Compatibility: Suitable for standard 1/4' BSP piping and fittings Applications and use cases Manual control of a pneumatic cylinder in a clamping station or fixture, allowing an operator to engage or release without electrical controls. Local override or manual override point in an automated line, enabling quick isolation or activation of a pneumatic subsystem for maintenance or testing. Setup and testing environments where a straightforward, nonelectrical air switch is required to simulate cycles or verify pneumatic timing and response. Usage considerations Confirm compatibility with 1/4' BSP piping and seals in your system. Verify operating pressure and ensure the valve is used within the system's rated limits. Install in a location that provides convenient manual access for operators and complies with relevant safety standards.