You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing
Manufacturer Reference / Part No.:
The RS-790 delivers performance, durability and comfort making it the ideal choice for discerning divers.
The R-700 is a balanced diaphragm first stage designed for cold-water use, it features a dry ambient pressure chamber that prevents water contact with the diaphragm maximizing performance in temperate water conditions below 50°F/10°C. Additionally, the R-700 has an external rib section that nearly doubles the surface area for thermal exchange further reducing ice formation that can lead to freeze up in extreme conditions. The R-700 has two high pressure ports and four low pressure ports including two high flow (HF) that deliver up to a 15% increase in air flow. It is available in both INT (yoke) and DIN versions.
The S-90 second stage is a compact pneumatically balanced system that features a composite housing which insulates and protects under extreme cold-water conditions. The S-90 is equipped with a built-in venturi adjustment lever allowing the diver to select a surface or minimum setting reducing possible free flow or a dive setting for maximum air flow during the dive.
• | Balanced diaphragm first stage with anti-freeze system |
• | Dry ambient pressure chamber ideal for temperatures below 50°F/10°C |
• | Ribbed section to increase heat transfer and resist freezing |
• | Two H.P. ports and Four L.P. (2 standard/2 high flow) ports |
• | High flow L.P. ports offer up to 15% increase in air flow |
• | DIN version available as RS-790 DIN (300bar/4350psi) |
• | Eligible for TUSA CARE Free Parts for Life Program - USA Only |
• | Lightweight, compact composite case design |
• | Pneumatically balanced system |
• | Venturi adjustment lever |
• | Ortho-consciously designed mouthpiece |
• | Eligible for TUSA CARE Free Parts for Life Program - USA Only |
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