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Review Summary
Balanced Flow-Thru-Piston
Five 3/8" Thread HF
Two 7/16" Thread
Yes, Venturi Dive/Pre-Dive Switch
Yes, Up to 40% Oxygen
Air Balanced Progressive Flow Control Valve
First Stage: Body Chromed Brass, Piston: Composite/Stainless Steel
Second Stage: Case½Fiberglass-Reinforced Nylon, Valve Body Chromed Brass
3/8"
40.8 oz. (1,157 g)
4048336404297
The perfect blend of rich diving history and cutting-edge regulator technology, the D420 delivers top breathing performance with classic styling. It features a brand new balanced valve called the Progressive Flow Control Valve that delivers abundant airflow for the best breathing performance, with a natural smoothness not unlike what you might experience breathing on the surface. This technical jewel is a must-have breather for all divers and all dive scenarios.
• INCREDIBLY EASY BREATHING
Air-balanced Progressive Flow Control Valve delivers abundant airflow, and the diaphragm positioned in the lower section of the casing makes breathing even easier.
• ENGINEERED FOR PERFORMANCE
Uniquely shaped fiberglass-reinforced nylon casing features inner winglets that direct airflow towards the exhaust valve, creating a dramatic improvement in exhalation effort.
• SUPER EFFICIENT & LARGE PURGE BUTTON
Based on a new concept that gives the D420 its unique face, it is easy to reach and depress, with or without gloves.
• 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.
• BUBBLE DEFLECTION
Compact exhaust tee efficiently directs bubbles away from the diver’s line of sight while enhancing ease of exhalation.
• DISTINCTIVE FIBERGLASS-REINFORCED NYLON CASING
Ultra-durable and allows the LP hose to be connected on either the right or left side for maximum rigging flexibility.
• SPECIALLY DESIGNED DIAPHRAGM
Located in the lower section of the casing to take advantage of the pressure gradient in the upright position, making breathing even easier.
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.
Scubapro's D420 regulator, inspired by the iconic D-Series, combines classic design with the latest breathing performance technology. It offers quality, reliability, and style for today's discerning divers. The new D420 features a balanced valve called the Progressive Flow Control Valve, delivering abundant airflow and a natural, smooth breathing experience similar to being on the surface. Its durable fiberglass-reinforced nylon casing allows flexible rigging with LP hose connections on either side.
Paired with the MK25 EVO balanced piston first stage, the D420 offers exceptional performance for avid divers. The MK25 EVO provides ultra-stable intermediate pressure, ensuring a consistent, high air delivery regardless of tank pressure or water temperature. Its balanced piston design delivers more air to the second stage and performs equally well in both warm and cold-water environments.
The MK25 EVO features two high-pressure ports, five high-flow low-pressure ports, and an externally adjustable intermediate pressure for fine-tuning by Scubapro technicians. Its new Extended Thermal Insulating System (XTIS) increases freezing resistance by 30%, making it suitable for cold-water diving, tested in extreme conditions below 36 Degree F (2.2 Degree C).
The D420 second stage regulator's unique casing design improves exhalation effort, and its diaphragm takes advantage of pressure gradients for easier breathing. Its reversible hose attachment, large purge button, and compact exhaust tee enhance user experience. The regulator weighs 40.8 oz. (1,157 g), is Nitrox compatible up to 40% oxygen, and includes an owner's manual.
Experience the perfect blend of tradition and innovation with Scubapro's D420 and MK25 EVO regulator system, designed to meet the needs of modern divers while staying true to the brand's heritage.
https://www.scubapro.com/scubapro-warranty
800-467-2822