3/2-way Normally Closed (NC) manually-actuated pneumatic on-off valve with non-revers. flow + soft sealing - Midi size - Festo (HE series) - Part number #170682 - G1/4" threaded pneumatic connection (port 3) - Bistable operation - Piston spool valve - In-line installation mounting - Die-cast Aluminium housing / NBR seals - 3-ports 2-positions - equivalent to part #HEDMIDI