The DCX high-performance, over-balanced first stage, provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions. Based on the DC1 the DCX also has a 5th low pressure port that points directly down from the first stage providing easy hose routing for backmounted doubles, sidemount or even for recreational divers. It differs from the DC1 in that it is lighter and protected by a super hard PVD* (Physical Vapor Deposition) coating. PVD is by far the most durable coating available and will out last any traditional finish.
*Physical Vapor Deposition (PVD) is a time tested proven technology that has been used for decades in other industries and is now available for specific Hollis products. PVD is a collective set of processes used to deposit thin layers of material, typically in the range of few nanometers to several micrometers. This state of the art process provides a superior alternative to traditional “Chrome Plating”, is environmentally friendly and provides longer lasting durablity.