MK19 Evo/D420/R195 Octo Dive Regulator System
With the introduction of the D420, SCUBAPRO engineers have combined the iconic design of the original D-Series second stages with the latest advances in breathing performance technology. They then teamed it with the MK19 EVO balanced diaphragm first stage to create a 21st century smooth, natural breathing regulator. The D420 features a 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 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 concept that gives the D420 its unique face. Teamed with the compact, lightweight MK19 EVO, with its environmentally sealed system, dry ambient pressure chamber plus user-friendly LP port swivel turret, this regulator system is uniquely well-suited to handling cold water and the harsh diving conditions often encountered by technical divers. This makes the MK19 EVO/D420 more tech-driven than the MK25 EVO/D420, while serving avid divers and SCUBAPRO brand enthusiasts everywhere.
With the introduction of the D420, SCUBAPRO engineers have combined the iconic design of the original D-Series second stages with the latest advances in breathing performance technology. They then teamed it with the MK19 EVO balanced diaphragm first stage to create a 21st century smooth, natural breathing regulator. The D420 features a 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 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 concept that gives the D420 its unique face. Teamed with the compact, lightweight MK19 EVO, with its environmentally sealed system, dry ambient pressure chamber plus user-friendly LP port swivel turret, this regulator system is uniquely well-suited to handling cold water and the harsh diving conditions often encountered by technical divers. This makes the MK19 EVO/D420 more tech-driven than the MK25 EVO/D420, while serving avid divers and SCUBAPRO brand enthusiasts everywhere.
- Uniquely shaped fiberglass-reinforced nylon casing carries on the D-Series heritage with the latest advances in breathing performance technology
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Air-balanced Progressive Flow Control Valve is able to deliver abundant airflow with a natural smoothness comparable to breathing on the surface.
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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.
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Casing design features inner winglets that direct airflow towards the exhaust valve, creating a dramatic improvement in exhalation effort.
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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.
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Reversible hose attachment allows for either left- or right-side LP hose connections for maximum rigging flexibility
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Large purge button is easy to reach and depress, with or without gloves.
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Exhaust tee is compact and efficiently deflects bubbles from the diver’s view while enhancing ease of exhalation
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Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
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Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from largest to smallest.
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MK19 EVO is designed to be the ultimate first stage for cold water or contaminated diving conditions.
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Ideal first stage for avid recreational, technical, professional and military divers.
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Latest design makes it substantially smaller and lighter than the original MK19.
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Air-balanced first stage diaphragm delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate
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Environmentally sealed system prevents water and pollutants from fouling the inner mechanism and is extremely resistant to freezing
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The dry chamber is equipped with a double spring making it more compact and reliable.
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Two opposing high pressure ports allow the first stage to be positioned either up or down, plus provide for an optimum hose/transmitter layout
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Swivel turret comes with four High-Flow LP ports plus one axial Super High-Flow LP port to maximize hose routing options for technical diving layouts
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CE certified according the latest EN250A European Standards for all diving conditions, including extreme cold water.
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Regulator system includes the R195 Octopus.
| 2nd Stage Design | Balanced |
| 1st Stage Type | Diaphram |
| 2nd Stage Series | D Series |
| Water Temp | Warm, Cold, Temperate |
| Connector Type | DIN |
| Nitrox Mix | Up to 40% |
| HP Ports | 2 |
| LP Ports | 5 |
| 1st Stage Material | Chrome-Plated Brass |
| 2nd Stage Material | Reinforced Technopolymer Casing, Metal Components |
| Weight |
3.82 lb
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| Adjustable 2nd Stage | No |
| 2nd Stage Valve Housing Material | Technopolymer |
