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Perfect for Cold-Water Diving
The new RS-790 is Tusa’s flagship regulator. Its first stage, the R-700, is a balanced diaphragm design with a dry ambient pressure chamber for cold-water diving. Its ribbed top cap nearly doubles the surface area for thermal exchange—which is all-important for minimizing freeze-ups in ultra-cold conditions. The first stage offers two high-pressure and four low-pressure ports, two of which are high-flow. The S-90 second stage is pneumatically balanced and comes with a venturi adjustment lever that allows you to set it to “minimum” when on the surface—to eliminate freeflows—and “maximum” when at depth—to increase air flow. The RS-790 is available in both yoke and DIN versions. Bottom line: In cold or contaminated waters, having a sealed first stage keeps water out for reliable air delivery.
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Think of ScubaLab as the Consumer Reports of the scuba diving world. After all, ScubaLab has equipped active divers with the most reliable scuba diving gear information since 1992.
