Scubapro MK25 EVO/D420 - Dive Regulator System with R195 Octopus Second Stage Combining the iconic design of the original D-Series regulators with the latest advances in breathing performance technology, SCUBAPRO engineers have created a 21st century regulator in terms of quality, reliability, performance and style. The new D420 features a brand new balanced valve inside a housing supported by a full metal structure. Called the Progressive Flow Control Valve, it is able to deliver abundant airflow for the best breathing performance, with a natural smoothness comparable to what you might experience breathing on the surface. The uniquely shaped fiberglass-reinforced nylon casing is ultra-durable and allows the LP hose to be connected on either the right or left side for maximum rigging flexibility. A new dive/pre-dive system includes a switch on the top of the casing with a thumb tab for adjusting the direction of airflow right out of the valve. The highly efficient purge button is a technical jewel based on a new concept that gives the D420 its unique face. Teamed with the venerable MK25 EVO balanced piston first stage, this is a regulator system purpose-designed for today’s avid divers and SCUBAPRO brand enthusiasts everywhere. Comes in 2 Connector Types: Please Specify DIN or INT (A Clamp) fitting on Ordering Features: Uniquely shaped fibreglass-reinforced nylon casing carries on the D-Series heritage with the latest advances in breathing performance technology. Air-balanced Progressive Flow Control Valve is able to deliver abundant airflow with a natural smoothness comparable to breathing on the surface. Dive/pre-dive system includes a switch on the top of the case with a thumb tab for adjusting the direction of airflow right out of the valve. Casing design features inner winglets that direct airflow towards the exhaust valve, creating a dramatic improvement in exhalation effort. Diaphragm is located in the lower section of the casing to take advantage of the pressure gradient in the upright position, making breathing even easier. Reversible hose attachment allows for either left- or right-side LP hose connections for maximum rigging flexibility. Large purge button is easy to reach and press, with or without gloves. Exhaust tee is compact and efficiently deflects bubbles from the diver’s view while enhancing ease of exhalation. Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from largest to smallest. Air balanced flow-through piston first stage design delivers consistent and effortless airflow, regardless of depth, tank pressure, or breathing rate. Patented XTIS (Extended thermal Insulating system) fully insulates the inner mechanism from the environment, improving cold-water resistance by 30% and delaying ice formation in extreme cold-water conditions without compromising breathing performance. Anti-freeze protection radically increases breathing reliability when diving in the most extreme water temperatures. Two opposing high-pressure ports allow the first stage to be positioned either up or down. Four high-flow and one axial super high-flow low pressure ports on a swivel turret maximize hose routing options. CE certified according the latest EN250A European Standards for all diving conditions, including extreme cold water. Combination includes a safe second stage R195 octopus with an extra-long visibility hose and reversible hose attachment. Weight (without mouthpiece): 216g. Airflow at 200bar: 1800 l/min - 64 SCFM. Watch this short video to find out more about the D420 Dive Regulator System: Technical Features: Product Weight (M): 1.4 kg 2nd Stage Valve Housing Material: Technopolymer Water Temperature: Cold, Temperate, Warm 1st Stage Materials: Chrome-Plated Brass 1st Stage Type: Piston 2nd Stage Materials: Metal Components, Carbon Fiber Cover 2nd Stage Series: R Series 2nd Stage Design: Balanced Adjustable 2nd Stage: No Connector Types: INT  /  DIN Nitrox Mix: Up to 40% HP Ports: 2 LP Ports: 5 UPC: 4048336418690 (INT) / 4048336418706 (DIN) Product Code: 12.420.900 (INT) / 12.420.910 (DIN) Scubapro MK25 EVO Balanced Piston First Stage: Air balanced flow-through piston in a chrome-plated brass body provides constant and effortless airflow unaffected by depth, tank pressure, or breathing rate. Patent-pending XTIS (Extended Thermal Insulating System) fully isolates the mechanical elements from the cold, increasing freezing resistance 30 percent over the previous  MK25 without compromising breathing performance. Key insulation system components are visible in blue. New spring insulating coating, body insulating bushing, anti-freeze cap, bigger body and cap thread all work in concert with the XTIS to improve cold-water performance. Anti-freeze protection radically increases breathing reliability when diving in the most extreme water temperatures. Two opposing high pressure ports allow the first stage to be positioned either up or down. Five high-flow low pressure ports on a swivel turret maximize hose routing options. External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily. Available in either 3364psi/232bar INT or 4350psi/300bar DIN configurations. Weight: INT 232 (oz/g): 27.9/790; DIN 300 (oz/g): 20.1/572. Airflow at 2900psi/200bar: (l/min/SCFM): >8500/301. Intermediate pressure (psi/bar): 130-142/9.0-9.8. Scubapro R195 Octupus Second Stage: When you need a safe second you tend to need it quickly, so you better be able to see it, and it better be ready to deliver some air. The R195 OCTO does that and much more. The R195 OCTO is a modern second stage design that combines a classic downstream valve with a large diaphragm, functional purge button and VIVA switch for smooth and easy breathing and simple operation. Its robust construction, smooth air delivery and reliability makes the R195 OCTO a sensible safe second stage for all divers and a perfect choice for deco tanks thanks to its extra-long high visibility hose and reversible hose attachment. Features: High visibility yellow cover makes it easy to see when it comes time to share air with a buddy in need. Rugged reinforced technopolymer casing is fitted with a large diaphragm for the ultimate in breathing sensitivity, regardless of position in the water. Classic downstream valve comes with a VIVA switch to control free flows. Metal valve housing is built rugged and increases overall reliability. Yellow super-flow hose is 39in/1m long and features an oversized bore that allows more air to flow on each inhalation. Reversible hose attachment makes it easy to use on deco tanks. Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn\'t inhibit airflow. Technical Features Product Weight (M): 0.4 kg Activity: Recreational, Technical 2nd Stage Design: Unbalanced Adjustable 2nd Stage: Yes Hose Length (M): 99 cm UPC: 4048336097284 Product Code: 11.331.200