The Swagelok 1- stainless steel needle valve, 1/4" MNPT x 1/4" FNPT, SS-20VM4-F4 is a flow-control valve from Swagelok. It acts as the on/off or metering point in a piping or tubing run, controlling how fluid or air passes through the circuit. It is commonly in fluid power systems, machine tools, and process automation lines.
