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Scubapro MK19/D420 Regulator, Yoke Specifications

  • 1'st Stage Type

    Balanced Diaphragm

  • LP Ports

    Swivel Turret 4-High-Flow 3/8" Threaded, 1-Axial Super High-Flow

  • HP Ports

    Two 7/16" Threaded

  • Adjustable 2'nd Stage

    Yes, Venturi Dive/Pre-Dive Switch

  • Nitrox Compatible

    Yes, Up to 40% Oxygen

  • 2'nd Stage Type

    Air Balanced Progressive Flow Control Valve

  • Materials

    First Stage: Chromed Brass
    Second Stage: Case Fiberglass-Reinforced Nylon, Valve Body Chromed Brass

  • Hose Thread

    3/8"

  • Hose Length

    29.5" (75cm)

  • Total Weight

    38.8 oz. (1,100 g)

  • UPC Code

    4048336417648

About Scubapro MK19/D420 Regulator, Yoke

Merging the iconic design of the original D-Series regulators with cutting-edge breathing technology, Scubapro presents a 21st-century regulator that excels in quality, reliability, performance, and style. The D420 boasts a new balanced valve within a full metal housing, called the Progressive Flow Control Valve, which provides abundant airflow for a smooth, surface-like breathing experience. The unique fiberglass-reinforced nylon casing is ultra-durable, allowing the LP hose to connect on either side for ultimate rigging flexibility.

The new dive/pre-dive system features a switch on the casing with a thumb tab for airflow direction adjustments. The efficient purge button sports a fresh concept, giving the D420 its distinctive appearance. Paired with the MK19 EVO balanced diaphragm first stage, this regulator system is perfect for today's passionate divers and Scubapro enthusiasts.

The MK19 EVO 1st stage is designed for cold water or contaminated diving conditions, with consistent airflow regardless of depth, tank pressure, or breathing rate. Its environmentally sealed system prevents fouling, while the new dry chamber with a double spring ensures compactness and reliability. The swivel turret maximizes hose routing options, making it ideal for recreational, technical, professional, and military divers.

The Scubapro D420 second stage regulator features a unique fiberglass-reinforced nylon casing with advanced breathing performance technology. The air-balanced Progressive Flow Control Valve ensures smooth airflow, while the dive/pre-dive system allows for easy adjustments. The innovative casing design improves exhalation effort and diaphragm positioning enhances breathing ease. The reversible hose attachment, large purge button, and compact exhaust tee add to the regulator's user-friendly design. The regulator weighs approximately 38.8 oz. (1,100 g) without hose or mouthpiece and includes an owner's manual.

Scubapro MK19/D420 Regulator, Yoke Features

  • Scubapro MK19/D420 Regulator, Yoke:
  • Combining Iconic Design of D-Series w/Latest Advances In Breathing Performance Technology
  • 21st Century Regulator In Terms of Quality, Reliability, Performance & Style
  • Balanced Valve Inside Housing Supported by Full Metal Structure
  • High Performance, Reliable Scubapro Technology & Value
  • Superior Ultra-High Airflow System
  • Maximum Performance in All-Temperatures & Conditions
  • 3/8" Threaded 29.5" (75cm) Oversized Bore Low-Pressure Super Flow Hose
  • More Air On-Each Inhalation
  • Nitrox Compatible Up to 40% Oxygen
  • Ideal for Recreational, Technical, Professional & Military Divers
  • Weight: Approximately 38.8 oz. (1,100 g) w/o Hose or Mouthpiece
  • Owner's Manual
  • Scubapro MK19 EVO First-Stage:
  • Balanced Diaphragm 1st Stage Design
  • Fully Developed by Italy R&D Based On Growing Technical Market Needs
  • Ultimate First Stage for Cold Water or Contaminated Diving Conditions
  • Substantially Smaller & Lighter than Original MK19 & Competitors
  • Swivel & Dry Chamber: Premium Package Fits Tech Diver Needs
  • Dry Chamber Equipped w/Double Spring, More Compact & Reliable
  • Environmentally Sealed System Prevents Water/Pollutants from Fouling Inner Mechanism
  • Swivel Turret 4-High-Flow LP Ports Plus 1-Axial Super High-Flow LP Port
  • Maximize Hose Routing Options
  • Two 7/16" Threaded HP Ports
  • More Compact Streamline than Predecessor
  • Environmentally Sealed
  • Dry Ambient Pressure Chamber
  • Favored Choice of Cold-Water Divers
  • Machined Marine-Grade Chrome Plated Brass
  • Thermal Insulating System (TIS)
  • TIS: Prevents Freezing-Up and Malfunctioning in Cold Water Conditions
  • 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

Warranty Information

This product has a limited lifetime warranty.

Key Features

  • Smooth, surface-like breathing experience
  • Ultimate rigging flexibility with LP hose
  • Designed for cold or contaminated diving
  • Improved exhalation effort & ease of use
  • Reversible hose attachment for versatility

What's in the box:

  • 1'st Stage
  • 2'nd Stage
  • Low-Pressure Hose
  • Owner's Manual
  • MFG Lifetime Limited Warranty