High-quality and flexible connection system, specifically designed for handling aggressive, gas-generating media. Materials used: PP, PBT and PTFE. All parts coming into contact with media are from PTFE1. Three different hose diameters (1.6 mm; 2.3 mm; 3.2 mm) can be connected. Pressure equalisation is possible through use of membrane filter. Outgassing of media is reduced by use of a one-way valve that decreases media loss and protects the user from vapours.