Dupla CO2 Fitting Pro 80204 Dupla CO2 Fitting Pro High Control Accuracy Regulator with Precise Bubble Rate Adjustment Customer Rating  N/A Add Review Ask Question $350.00 Qty : < > Product Description Reviews (0) (View All) Questions (View All) Features: Series connection of several fittings possible (CO2 supply of several aquaria with one cylinder) Large, easy to read working pressure and cylinder pressure gauge High control accuracy through large membrane/seal seat ratio Precise bubble count setting through stainless steel needle valve Safety pressure control valve integrated Non-wearing seal to cylinder valve Corrosion-proof through material improvement Fine particle filter in cylinder connection and in needle valve Pressure relief ring at the pressure control valve for easy removal of fitting Add Review There are no reviews for this product. Ask Question There are no questions asked for this product. Ok