Apeks TEK3 Doubles First Stage Pair

The Apeks TEK3 Regulators are specifically designed for doubles (aka twinsets); each first stage supplying a one-sided mirror image of the other. Popular with technical divers because of their DS4 heritage, the Apeks TEK3 first stages have angled ports that are made to route downward to allow for perfect streamlined doubles hose routing that avoids snagging, crossing hoses and restricted access to your valves.

The Apeks TEK3 pair of first stages are work horse designs with years of proven performance and reliability preferred by the most demanding technical divers. The Apeks TEK3 is a unique over-balanced, diaphragm design - as the diver descends, the over-balancing feature allows the intermediate pressure gas in the hose to increase at a rate faster than ambient resulting in superb performance at extreme depths. Each polished chrome plated body has one standard high pressure 7/16-inch hose port and three standard high-flow low pressure 3/8-inch hose ports in left and right hand versions popular for doubles configurations. An environmental seal keeps water out of the main spring chamber thus preventing ice buildup and keeping silt and contamination out. The TEK3 regulators come standard with DIN connectors, include Apex branded DIN Protective Caps w/spare o-rings, and are Nitrox Ready.

When purchased separately, individual regulator stages remain as factory configured by the manufacturer and final integration must, out of necessity, become a customer responsibility. Please note that when this 1st stage is sold "raw" as received from the factory and not part of a package, it will have two of the three LP ports plugged (i.e. one LP port will be open with a plastic dust cap) and the HP port will also be plugged. FYI, do NOT attempt to unscrew what appears to be a conical shaped hose port plug on the top of the body, is actually the HP balance chamber plug..