MK25 EVO/D420

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.

The Scubapro D420 second stage regulators uniquely shaped fiberglass-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 depress, with or without gloves. Exhaust tee is compact and efficiently deflects bubbles from the diver's view while enhancing ease of exhalation. Super-flow 3/8" threaded 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. Regulator weighs 40.8 oz. (1,157 g), is Nitrox compatible up to 40% oxygen and comes with an owner's manual.

• Scubapro Mark 25 EVO Regulator Yoke, First Stage:
• Superior Cold-Water Performance Equal to Scubapro's MK17 First Stage
• EVO: Means Evolution, Revolutionizing Existing Technologies to Higher Performance
• High Performance, Reliable Scubapro Technology and Value
• Superior Ultra-High Airflow System, Maximum Performance in All-Temperatures & Conditions
• Ultra-Stable Intermediate Pressure
• High Performance in Warm and Cold Water to 3336 psi (230 bars)
• Meets New EN250-2014 Requirements
• CE Approved for 3360 psi (230 bars) in Cold Water Conditions
• Increased Cold Water Efficiency by 30% Over Previous MK25 Regulator
• New Design:
  Proprietary Insulating Coating On-Key Internal Components
  Specific Anti-Freezing Measure
  Patented Finned Cap and Body
  Xtreme Thermal Insulating System (XTIS)
  Ribs of XTIS: Act as Radiator, Increase Surface Area of Heat Transfer
  Warms-Up Internal Parts
• New Parts:
  Bigger Body Cap
  Insulating Bushing
  Antifreeze Cap
  Patented Isolation System
  Internal Parts Fully Insulated to Dramatically Improve Cold Water Performance
• Air-Balanced Flow-Through Piston Design
• Balanced Composite/Stainless Steel Flow-Thru-Piston
• HP Ports: Two 7/16" Threaded
• LP High Flow (HF) Ports: Five 3/8" Threaded
• LP Ports Mounted on Swivel Turret Cap for Maximum Hose Routing
• Scubapro D420 Second Stage Regulator:
• Uniquely Shaped Fiberglass-Reinforced Nylon Casing
• Carries-On D-Series Heritage w/Latest Advances in Breathing Performance Technology
• Air-Balanced Progressive Flow Control Valve
• Delivers Abundant Airflow w/Natural Smoothness Comparable to Breathing On-Surface
• Dive/Pre-Dive System: Switch On-Top of Case w/Thumb Tab Adjusting
• Casing Design Features Inner Winglets: Direct Airflow Towards Exhaust Valve
• Winglets: Create Dramatic Improvement In-Exhalation-Effort
• Diaphragm:
  Located In-Lower Section of Casing
  Takes Advantage of Pressure Gradient in Upright Position
  Makes Breathing Even Easier
• Reversible Hose Attachment: Allows Left-or-Right-Side LP Hose Connections
• Maximum Rigging Flexibility
• Large Purge Button: Easy to Reach & Depress, with or w/o Gloves
• Compact Exhaust Tee:
  Efficiently Deflects Bubbles-From-Diver's-View
  Enhances Ease of Exhalation
• High Comfort Orthodontic Mouthpiece:
  Improves Airflow & Mouth Comfort
  Fits All Mouth Sizes
  Largest to Smallest