First Stage Balanced Diaphragm - The Cressi-sub balanced diaphragm 1st stage is small, lightweight and versatile.
It features an environmentally sealed design with four low-pressure and two high-pressure ports perfectly positioned, allowing for proper alignment of hoses.
Consistent airflow at all depths and all tank pressures is insured as a result of its unique high flow design.
Second Stage For the diver looking for consistent high performance under all diving conditions, the Cressi-sub pneumatically balanced Airtech 2nd stage is the ideal choice.
Enhanced airflow at all tank pressures and all depths is provided by its pneumatically balanced design.
Additionally featured is a very attractive 2nd stage cover with a lightweight titanium insert.