The first stage of a regulator is critical to allow you to breathe underwater. Its purpose is to take air from the tank and reduce the pressure to a level for the second stage to handle and provide air to the diver. First stages, come in either DIN or Yoke styles depending on the type of tank you will be connecting too. We have first stages designed for cold water, this helps to minimize the chance of the first stage freeing during use in very cold water.
The Aquatec RG-4100F is a balanced 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.
Designed for...
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...
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...
The Aquatec RG-1100F is a piston based 1st stage, featuring the Extended Thermal Insulating System that gives this 1st stage a 30% improvement of freezing over previous models. It has an ultra fast breathing response and great sensitivity with extra-high airflow.
The 1st stage...
