Combining the iconic design of the original D-Series regulators with the latest
\nadvances in breathing performance technology, SCUBAPRO engineers have created a
\n21st century regulator in terms of quality, reliability, performance and style. The D420
\nfeatures a balanced valve inside a housing supported by a full metal structure. Called
\nthe Progressive Flow Control Valve, it is able to deliver abundant airflow for the best
\nbreathing performance, with a natural smoothness comparable to what you might
\nexperience breathing on the surface. The uniquely shaped fiberglass-reinforced nylon
\ncasing is ultra-durable and allows the LP hose to be connected on either the right or
\nleft side for maximum rigging flexibility. A dive\/pre-dive system includes a switch on
\nthe top of the casing with a thumb tab for adjusting the direction of airflow right out
\nof the valve. The highly efficient purge button is a technical jewel based on a concept
\nthat gives the D420 its unique face. Teamed with the venerable MK25 EVO balanced
\npiston first stage, this is a regulator system purpose-designed for today\u2019s avid divers
\nand SCUBAPRO brand enthusiasts everywhere.
\nMK25 EVO FIRST STAGE
\n\u25ca Air balanced flow-through piston in a chrome-plated marine-grade brass body
\nprovides constant and effortless airflow unaffected by depth, tank pressure, or
\nbreathing rate
\n\u25ca Patented XTIS (Extended Thermal Insulating System) fully insulates the inner
\nmechanism from the environment, improving cold-water resistance by 30% and
\ndelaying ice formation in extreme cold-water conditions without compromising
\nbreathing performance. Key insulation system components are visible in blue.
\n\u25ca Anti-freeze protection radically increases breathing reliability when diving in the
\nmost extreme water temperatures.
\n\u25ca Two opposing high-pressure ports allow the first stage to be positioned either up
\nor down.
\n\u25ca Four high-flow and one axial super high-flow low pressure ports on a swivel turret
\nmaximize hose routing options.
\n\u25ca External intermediate pressure adjustment enables technicians to fine-tune
\nperformance quickly and easily.
\n\u25ca Weight: INT 232, 790g; DIN 300, 572g.
\n\u25ca Airflow at 2900psi\/200bar: (l\/min\/SCFM): >8500\/301.
\n\u25ca Intermediate pressure (psi\/bar): 133-142\/9.2-9.8.
\nD420 SECOND STAGE
\n\u25ca Uniquely shaped fiberglass-reinforced nylon casing carries on the D-Series
\nheritage with the latest advances in breathing performance technology.
\n\u25ca Air-balanced Progressive Flow Control Valve is able to deliver abundant airflow with
\na natural smoothness comparable to breathing on the surface.
\n\u25ca Dive\/pre-dive system includes a switch on the top of the case with a thumb tab for
\nadjusting the direction of airflow right out of the valve.
\n\u25ca Casing design features inner winglets that direct airflow towards the exhaust valve,
\ncreating a dramatic improvement in exhalation effort.
\n\u25ca Diaphragm is located in the lower section of the casing to take advantage of the
\npressure gradient in the upright position, making breathing even easier.
\n\u25ca Reversible hose attachment allows for either left- or right-side LP hose
\nconnections for maximum rigging flexibility.
\n\u25ca Large purge button is easy to reach and press, with or without gloves.
\n\u25ca Exhaust tee is compact and efficiently deflects bubbles from the diver\u2019s view while
\nenhancing ease of exhalation.
\n\u25ca Super-flow hose features an oversized bore that allows more air to flow on each
\ninhalation.
\n\u25ca Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all
\nmouth sizes, from largest to smallest.
\n\u25ca CE certified according the latest EN250A European Standards for all diving
\nconditions, including extreme cold water.
\n\u25ca Weight (without mouthpiece): 216g.
\n\u25ca Airflow at 200bar: 1800 l\/min – 64 SCFM.<\/p>\n","protected":false},"excerpt":{"rendered":"
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