Size: Typically available in DIN (200/300 bar) and Yoke (232 bar) configurations, with hose lengths ranging from 30 cm to 90 cm.
Grade: High-pressure regulators (first stage) and low-pressure regulators (second stage) designed for breathing gases like air, nitrox, or trimix.
Viscosity: Not directly applicable; regulators focus on gas flow rates (e.g., 30-40 liters per minute at 1 bar).
Buoyancy: Neutral to slightly negative buoyancy, depending on material and design.
Material: Brass or chrome-plated brass for first stages, aluminum or titanium for lightweight options; second stages often use plastic or corrosion-resistant metals.
Pressure Rating: First stages handle 200-300 bar input; second stages deliver 8-10 bar intermediate pressure.
Environmental Resistance: Saltwater-resistant coatings, O-rings (Viton or EPDM), and cold-water kits for temperatures below 10°C.
Weight: Varies by material (e.g., 0.5-1.5 kg for first stages, 0.3-0.7 kg for second stages).
Compatibility: Works with standard scuba tanks (DIN/Yoke) and octopus/secondary regulators.