The G260 is the most imitated air balanced second stage design of all time. First introduced in 1986 as the G250, it was the first regulator to introduce an adjustable Venturi Initiated Vacuum Assist (VIVA). Today's modern version features metal components (inlet tube, orifice, inhalation control knob and hose connector) for excellent cold-water performance. It also offers a left-right hose attachment option, making it a great choice for tech diving configurations. When you put them together you get a super-charged breathing system that's surprisingly affordable. It's a proven performer for all types of diving, but where theMK21/G260 really excels is in cold-water diving scenarios and technical applications. G260 Second Stage: Nylon fiberglass design features SCUBAPRO's largest second stage casing and diaphragm for the ultimate in breathing sensitivity, regardless of position in the water. Metal components, including metal air barrel and metal valve inlet tube, increase resistance to freezing when diving in extreme conditions. Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures. High-flow exhaust valve reduces exhalation for better overall breathing comfort. Diver-adjustable inhalation effort knob fine-tunes air delivery to suit personal tastes. Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch prevents free flows in cold water or when used as an octopus. Reversible hose attachment allows you to easily adjust hose routing for tech diving configurations. Super-flow hose features an oversized bore (larger inside hose diameter) that allows more air to flow on each inhalation. Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow. Weight: 9.7oz/275g. Airflow at 2900psi/200bar: 1800 l/min - 64 SCFM. Maximum low pressure: 203psi/14bar.
