Festo HEL-3 8-D-MIDI-NPT On-Off Valve is a valve from the HEL-3 family, identified by the part number HEL-3 8-D-MIDI-NPT. The -NPT suffix indicates National Pipe Thread connections. It is an on-off valve designed to control flow in a system by opening or closing passages, suitable for configurations that require NPT-threaded connections.
