Apeks DST first stage

OVERBALANCED, DIAPHRAGM-CONTROLLED FIRST STAGE

The heart of the regulator is the first stage. Most Apeks first stages operate with an overbalanced, diaphragm-controlled mechanism. In an overbalanced first stage, as the diver's depth increases, the average pressure increases faster than in a conventional, balanced first stage. The increased average pressure compensates for the increasing density of breathing gas, allowing more breathing gas to flow through the system when needed (i.e. during inhalation). The result is above-average breathing performance, regardless of depth.

DRY CHAMBER PROTECTED BY A DIAPHRAGM.

This device serves several functions, including protecting against icing of the mainspring, which can occur during dives in very cold waters. The membrane also protects the first stage dry chamber from the ingress of debris. This eliminates the need for oily silicone oils or filling the automaton with grease.

The Apeks DST offers great comfort thanks to its rotating head. The medium pressure ports located there provide a good hoses configuration, for example, for twin cylinders (twinset), single cylinder or stage cylinders. It is also an ideal companion for sidemount diving. It is possible to install a fifth medium pressure port on top of the head.

The DST has 4 medium pressure outlets (3/8" UNF) and 2 high pressure outlets (7/16" UNF).

Of course, the first stage of the Apeks DST is suitable for cold water and is therefore also suitable for temperatures below 10°C. Compatible with EAN40 out of the box.

An optional fifth port is available for sidemount or twin-cylinder configurations.

FIRST STAGE DST

• Unique overbalanced diaphragm design - when the diver descends, the overbalance feature allows the average gas pressure in the hose to rise at a rate faster than ambient pressure. This results in superior performance at depth.
• The 2 HP ports and 4 MP ports on the rotating turret are angled for optimal hose routing.
• The dry chamber system keeps water away from the main spring chamber, preventing ice buildup and keeping silt and debris out.