Scubapro MK11 1st stage

- Air-balanced diaphragm first stage design delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate.

- Marine grade brass body has sealed internal parts to prevent water and pollutants from fouling the inner mechanism while enhancing cold-water performance.

- Two high pressure, two low pressure and two high-flow LP ports maximize hose routing options.

- External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.