Our first stages represent the cutting edge of design. We have overcome complex engineering constraints and produced equipment that achieves top performance and yet remains uncomplicated, guaranteeing greater reliability and lower cost maintenance and service. The first stage - the powerhouse of your regulator - reduces the high pressure air stored in your cylinder to a controllable intermediate pressure of 9.0 - 10.0 bar. The air then flows along the medium pressure hose to the second stage (demand stage).