WHY DIVE PRISM 2? NICK HOLLIS EXPLAINS
The PRISM 2 is a simple and reliable rebreather that can be used for all types of diving from the shallowest photography dives to the deepest exploration dives. P2 owners are the silent stormtroopers of the underwater world.
On a recent liveaboard trip (pre-Covid) there were a number of rebreathers from different manufacturers and a few PRISM 2’s on board. The divers on the trip saw that the PRISM 2 was one of the few that performed consistently and reliability and that those P2 divers didn’t miss a dive.
WHY DIVE THE PRISM 2 REBREATHER?
Why? Overall, the PRISM 2 is a simple unit, built from durable materials that require fewer parts than most. These design features of the P2 add to its ease of service and reliability. Traveling divers of all levels have learned to keep a “Save-a-Dive” kit with them and that’s true for P2 divers as well. However, P2 divers typically don’t have to have more than a spare oxygen sensor, wiring harness, O-ring or breathing hose available, as it’s uncommon to need a replacement outside of an annual service.
PRISM 2 ADVANTAGES
The big advantage to the P2’s design and manufacturing is that it’s incredibly compact and lightweight, making it very easy to travel with. In fact, the P2 head and electronics can easily be packed into a carry on.
Another cool feature is the P2’s clear-bucket design that no other rebreather incorporates. This allows your buddy to identify a critical leak during the initial safety checks before it becomes a major problem. The Acrylonitrile Butadiene Styrene (ABS) cover also protects from interference with overhead environments and drops from the local dive site bench. It also, notably, doubles as a stormtrooper helmet.
But do all the features of the PRISM’s lightweight and compact design benefits also translate to durability? Let’s dive into the details.
The PRISM is constructed of Advanced High Impact ABS in the breathing loop, Zytel Nylon in the head and basket, and Isoplast Urethane for the bucket. These materials were chosen for their extreme temperature resistance, high tensile strength, and are chemically resistant to degradation in the most extreme conditions.
These materials were chosen during the engineering and design of the P2 because they’re as strong (or stronger) than what other manufacturers use and strong enough to replace metals in load-bearing applications. Plus, they’re more resistant to cold water brittleness and deformation and have better insulating properties.
For example: The Scrubber Bucket of Isoplast Urethane and the Scrubber basket made from Zytel Nylon are; 2x strong as Delrin; 3x Stronger than aluminum; 1/3 Lighter than aluminum; and they don’t corrode. (Wait until you see what salt water and water that has sorb dust in it does to that aluminum bucket of the other guys.) Finally, there is no off-gassing of harmful formaldehyde chemicals into your loop!