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Technical
 

Apeks DST4 + 5th Port 1st Stage Regulator

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RRP 13,190  ฿
 
Dry Sealed System with swivel turret (DST)

5 MP ports x 3/8 UNF

2 HP ports 7/16 UNF

The first stage - the powerhouse of your regulator - reduces the high pressure air stored in your cylinder to a controllable intermediate pressure of about 9 - 10 BAR. The air then flows along the medium pressure hose to the second stage (demand stage). Apeks manufactures a wide range of first stages to meet the needs of every diver. The DST first stage is one of the world's top 1st stages with proven performance and reliability. The DST first stage with additional 5th port is the standard 1st stage of the Apeks Sidemount Regulator Set.
Image of Apeks scuba diving regulator DST4 + 5th Port First Stage


The first stage is of pressure adjustable depth compensated diaphragm design and supplies air at exactly the right pressure. As the diver descends the demand for gas increases and to maintain the supply, the intermediate pressure increases relative to the water depth. In the Dry-Sealed System hydrostatic pressure, acting on the outer sealing diaphragm, is transmitted to the primary diaphragm via the load transmitter. These first stages utilize a unique over-tracking (over-balanced) diaphragm design, where the intermediate pressure supplied to the second stage increases more than traditional balanced models, as the diver descends to greater depths. This increased intermediate pressure compensates for the increased density of your breathing gas by allowing a larger volume of gas to flow through the system on demand. The result is superior breathing performance regardless of depth.The first stage is of pressure adjustable depth compensated diaphragm design and supplies air at exactly the right pressure.


All first stages are available in both DIN and A clamp versions.


 
Technical information and illustrations...