Dupla CO2 Magnetic Valve 80242 Dupla CO2 Magnetic Valve with High Quality Brass Body Customer Rating  N/A Add Review Ask Question $200.00 Qty : < > Product Description Reviews (0) (View All) Questions (View All) The Dupla CO2 Magnetic Valve enables semi or fully automatic CO2 control. It has a high quality brass valve body and provides reliable functioning at all times. For semi-automatic operation, it is connected to the lighting timer so that CO2 supply is switched off with the lights. For fully automatic operation, it is used with a pH Control Delta or Alpha. Add Review There are no reviews for this product. Ask Question There are no questions asked for this product. Ok