Barbed tubing connector RTU-PK-3/3 With barbed fitting for plastic tubing PP, PU, PR. Nominal size=2,5 mm, Operating medium=Compressed air in accordance with ISO8573-1:2010 [7:-:-], Note on operating and pilot medium=Lubricated operation possible (subsequently required for further operation), Pneumatic connection, port 1=for tubing, 4mm outside diameter, Pneumatic connection, port 2=For tubing outside diameter 4 mm