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








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