Description
Overview
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 formaton 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.
The RS-790 offers the following features:
Key Features
- First Stage:
- Balanced Diaphragm Design
- Anti-Freeze System
- Dry Ambient Pressure Chamber
- Ideal for Temperatures Below 50 Degrees Fahrenheit (10 Degrees Celsius)
- Nitrox Compatible to 40%
- Environmentally Sealed
- 2 High Flow LP Ports 15% Increase Air Flow
- 2 Standard LP Ports
- 2 HP Ports
- Second Stage:
- Pneumatically Balanced Design
- Lightweight, Compact Composite Case
- Venturi Adjustment Lever
- Ortho-Consciously Designed Silicone Mouthpiece
- Owner’s Manual
- Limited Lifetime Warranty
