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This product has a limited lifetime warranty.

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Whats in the box:1st Stage, 2nd Stage, LP Hose

The Mk11 First Stage Regulator is the perfect choice for the recreational diver who wants the advantage of a diaphragm first stage for use in temperate waters. Diaphragm-based first stages are environmentally sealed so that water cannot enter the inner mechanism.Bearing in mind that regulators generate temperatures as low as minus 22°F due to the incredibly fast moving air and the pressure drop involved, it is imperative that sensitive moving metal parts avoid contact with extremely cold water or debris. Therefore, diaphragm first stages have been the favored choice of cold-water divers and those working in contaminated or muddy water. SCUBAPRO diaphragm first stages feature balanced technology and are packed with patented features resulting in ultra fast flow to the second stage on demand and a fantastic overall performance.

The MK11 first stage's streamline body is constructed of machined marine-grade chrome. The MK11 has a balanced diaphragm to offer you peace of mind with its smooth breathing mechanisms and maximum performance that don't diminish as your tank's air pressure changes. This first stage is available with a DIN or yoke configuration, making it ideal for divers around the globe. This first stage comes standard with the Thermal Insulating System (TIS), which keeps your first stage from freezing up and malfunctioning in cold water conditions. Additionally, its over-balanced diaphragm first stage design gives you better breathing performance at greater depths.

A second stage regulator must translate natural breathing behavior into mechanical reality. A high quality second stage can significantly reduce stress and enhance diver safety by providing smooth, low-effort breathing response, resulting in ample yet controllable quantities of air. The human breathing process is unique and individual, rather intuitive, and taken for granted at thesurface. However, once underwater and dependent on a regulator, we suddenly realize how personal and unique breathing behaviors areand how important a regulator can be. The harsher the diving conditions, the higher the flexibility and response we demand from a second stage regulator. This is why at SCUBAPRO we have implemented diver adjustable functions on many of our regulators. The R395 second stage offers an ideal balance of quality, comfort, and reliability. The R395's downstream valve means you can dive breathing easily - both literally and figuratively. The R395's streamline design, minimal weight, and orthodontic silicone mouthpiece mean jawfatigue and pain will be a thing of the past. Just as important as the R395's smooth diaphragm action is ScubaPro's guarantee of unsurpassed quality and workmanship. This VIVA-patented system uses the power of a vacuum assist to reduce work of breathing and increase breathing comfort. It is diver-adjustable on all current SCUBAPRO second stages.