The Aquatec RG-3100F is a piston based 1st stage, with a time-tested design for demanding conditions.  This is the 1st stage of choice for a rental regulator, it comes factory cleaned and ready for up to 40% Nitrox.  A simple design, easy to maintain and great value.

The 1st stage features one high-pressure port, 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.