Regulating valve, pressure reducer, flow regulator, tapping regulator, test equipment for all Ecomini and Solo 58 test gas cylinders (5-component gas) Also fits Dräger test gas cylinders and MSA test gas cylinders With 1/4 inch external thread 30 l/h or 0.5 l/m flow limitation incl. pressure indicator for checking the fill level Attention: coupling with free passage! Danger of bursting with closed passage!