DS4 First Stage

The Apeks DS4 First Stage Regulator is a workhorse with years of tested and proven experience preferred by the most demanding technical divers. For a long time, they have been popular first stages for twinset configuration.

The Apeks DS4 is overbalanced for maximum performance at depth.

A dry chamber prevents water from coming into contact with the first stage spring to stop freezing.

The DS4 is also available with a rotating turret form as the Apeks DST model for any use and outstanding performance, especially for side-mounted stage cylinders.

• Environmentally dry sealed
• 4 MP ports
• 2 HP port
• Adjustable intermediate pressure
• Finished in highly polished chrome