The Pneumadyne Inc. Manual Air Control Valve 14F272 is a manually operated pneumatic valve designed for general purpose flow control applications. It has a brass body with a chrome-plated ABS thermoplastic knob, and features a precision machined valve stem and seat. This 1/4" NPT valve has a flow coefficient (Cv) of 0.3 and a maximum pressure rating of 250 PSI. It can be used with air, inert gas, and some fluids. The compact and lightweight design makes it suitable for operating machinery, automation equipment, and other pneumatic systems.