The Aquatec RG-2100F is a diaphragm design 1st stage, offering a consistent airflow independent of depth/tank pressure.  This is a compact 1st stage featuring two high-pressure ports, and four low-pressure ports; with an intermediate pressure of 9.5~10.2 BAR. 

CE Approved and manufactured from chrome plated brass with stainless steel springs for long life.

Pair with an Aquatec Primary and Secondary 2nd stage, and a brass pressure gauge (BAR); NOTE regulator does not come with a power inflator hose.

Read our blog post about Balanced 1st Stages HERE