With the new D420, SCUBAPRO engineers have managed to combine the iconic design of the original D-Series regulators with the latest breathing apparatus technology. They then connected this second stage to the new MK19 EVO balanced diaphragm first stage. The result is a regulator that excels in quality, reliability, performance and style and is ready for the 21st century. The new D420 features a brand new balanced valve housed in a housing supported by a metal structure called the progressive flow control valve. This valve can supply an enormous amount of air, so that you breathe as naturally and smoothly as you are used to above water. The housing made of glass fiber reinforced nylon and a unique shape is exceptionally strong and allows you to connect the medium pressure hose on the left or right - you can use it in any direction. The new 'dive/pre-dive' mechanism features a thumb switch so that the direction of airflow can be controlled externally, and the extremely efficient purge button is a technological tour de force based on a new design that gives the D420 its unique look. Together with the compact and lightweight MK19 EVO (with a dry chamber completely sealed from the environment), this system offers an easy-to-use swivel head with low-pressure connections. This regulator is ideal for cold water and heavy diving conditions, which technical divers regularly encounter. This makes the MK19 EVO/D420 technically an even better choice than the MK25 EVO/D420, specially designed for today's enthusiastic diver and fans of the SCUBAPRO brand anywhere in the world.

• The glass fiber reinforced nylon body with its unique shape continues the tradition of the D series with the latest breathing apparatus technology.
• The air-balanced valve (Progressive Flow Control Valve) delivers a very large flow of air, making breathing as smooth as above water.
• The dive/pre-dive mechanism features a thumb switch so that the direction of airflow can be controlled directly on the valve.
• The housing - a design - has wings that guide the airflow towards the exhaust valve. Exhaling also takes even less effort.
• The membrane is located at the bottom of the housing and makes good use of the pressure gradient in a vertical position, making breathing even easier.
• The hose can be connected left or right thanks to the low-pressure ports on both the right and left sides - optimal flexibility regarding your configuration.
• The large water purge button is easy to find and can be easily pressed with or without gloves.
• The exhalation piece is compact and ensures that the bubbles are not discharged into the diver's view. Exhaling is all the easier.
• The Superflow hose has an extra large diameter so that more air is supplied with each breath.
• The compact Hi-Flow mouthpiece improves air flow and is even more comfortable - no matter how big the mouth is, it fits.