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Mares 25XR DR Tek Regulator Set

SKU: MRS25DRS MFR: 416402

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About Mares 25XR DR Tek Regulator Set

Mares introduces its Extended Range (XR) Gear Line. Bridging the gap between recreational and technical diving. The 25XR DR first stage is extremely reliable and environmentally sealed- great for keeping out water. With an interchangeable port design to offer perfect SPG instrument positioning. The first stage regulator is made from a nickel-plated marine grade brass and has a solid compact one-piece body. The balanced diaphragm design which is environmentally sealed. The diaphragm membrane transmits the pressure changes to the internal mechanism eliminating the need for the surrounding water to enter the intricate mechanism. The benefit of this type of first stage design is that none of the internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.

Another unique feature of the first-stage is the Dynamic Flow Control (DFC). The DFC system minimizes the intermediate pressure drop during inhalation, making it possible to use a simpler more reliable second stage. No type of manual adjustment of the second stage is necessary due to the consistency derived from a first stage that guarantees a stable flow of air, even under extreme conditions. Also, the 25XR DR First Stage Regulators HP valve uses Mares Advanced Coating Technology: The new valve in the X" systems increases durability by an astounding 600%, even under the most extreme conditions.

This DIN dedicated regulator with its environmental seal makes it an excellent choice for cold water diving. The first stage comes equipped with 2 LP ports 3/8" UNF threaded that are angled down for optimum hose routing and 1 HP port (IPD: Interchangeable Port Design) with 7/16" UNF threads. Regulator is designed for use with Trimix, Heliox, Heliox gas mixtures, it is extreme reliability with the highest safety in its design. Maximized breathing comfort, extreme depth, engaged dives & mixed gas diving (Helium, O2, Nitrogen) capable. Excellent choice for twinset use but equally suitable for single or stage cylinder configurations. Dual configuration: fits all certifying agencies from RSTC to DIR divers and all XR uses including cave.

Compact and rugged, the DR Deep Regulator Second Stage is strong and resistant - ideal for scootering, deep, cold and wreck diving! For extreme demanding conditions, such as use in cold or contaminated water, the DR second stage is also made of nickel plated brass. This material offers several benefits: ruggedness and thinner walls which allow compact dimensions obtained without using smaller-diameter diaphragms; this result in reduced water drag. The second stage ha an anti-freeze function, which is enhanced by the "radiator action" of the metal.

The DR with its Vortex Assist Design (V.A.D.) system: all Mares second stages offer the unique patented VAD system. The air bypass tube conveys air to the mouthpiece creating a swirling vortex with a low-pressure area in the center this keeps the diaphragm down during inhalation, giving very sensitive and easy breathing at all depths. The second stage cover features the new "mesh-grid" system for water inflow and outflow, which provides a further performance improvement. Furthermore, the compact and ergonomic exhaust tee ensures superior hydrodynamic performance and reduced exhalation resistance. The mouthpiece is made of soft hypoallergenic silicone: limiting jaw fatigue and offering a secure fit even after very long dives. This regulator set consists of 2 first stage regulators one with left hand and one with right hand porting, 2 second stage regulators, two 3/8" threaded low pressure hoses one measuring 22" (56 cm) and one measuring 82.7" (210 cm). Each regulator weighs 36.23 oz. (1,027 g).

The regulator set also includes a silicone regulator necklace that attaches easily to any regulator 2'nd stage mouthpiece. Necklace allows regulator to hang close under the chin it keeps your second stage where you need it. Durable, shape retaining silicone design. Also included with the set is a high quality marine grade 316 stainless steel 3" (7.6 cm) dead bolt snap. This spring-loaded gate clip with 360° swivel is Mares XR laser engraved and corrosion and rust resistant. Swiveling bases making them easy to use.

This product can only be shipped to U.S. addresses.

Warranty Information

This product has a limited warranty of 24 months.


Mares 25XR DR Tek Regulator Set Features

  • Mares 25XR DR Tek Regulator Set:
  • Complete Technical Diving Regulator Set
  • Two First and Second Stage Regulators
  • Two LP Hoses: 22" (56 cm) and 82.7" (210 cm) with 3/8" Threads
  • Weight: 36.23 oz. (1,027 g)
  • First Stage:Mares 25XR
  • Mares Introduces the Extended Range (XR) Gear Line
  • Bridging the Gap Between Recreational and Technical Diving
  • Made for Serious Divers
  • Pushed to Limits-Thru-Intense Testing
  • Nickel-Plated Marine Grade Brass
  • Solid Compact One-Piece Body
  • Balanced Diaphragm Design:
    Inherently Environmentally Sealed to Keep Out Contaminates
    Diaphragm Keeps Delicate Internal Parts from Exposure-to-Contaminants
    No Deterioration from Salt, Sand, Chlorine or Pool Acids
    Requires Less-Maintenance
  • CWD Kit for Extreme Temperature
  • High Performance in Cold Water
  • Dynamic Flow Control (DFC): Minimizes Intermediate Pressure Drop
  • HP Valve:
    Advanced Coating Technology
    New X" system Valve Increases Durability 600%
    Even Under Most Extreme Conditions
  • DIN Dedicated Regulator
  • 2 LP Ports 3/8" UNF Thread
  • LP Ports Angled Down for Optimum Hose Routing
  • 1 HP Port (IPD: Interchangeable Port Design) 7/16" UNF Threads
  • Available w/Left-or-Right Hand Porting
  • Trimix, Heliox, Heliox Gas Mixture Compatible
  • Extreme Reliability w/Highest Safety Design
  • Maximized Breathing Comfort
  • Extreme Depth, Engaged Dives & Mixed Gas Diving (Helium, O2, Nitrogen)
  • Excellent Choice for Twin-Set Cylinders
  • Works Well w/Single Cylinders
  • Fits All Certifying Agencies from RSTC to DIR Divers
  • All XR Uses Including Cave
  • Second Stage:Mares DR
  • High Performance Tech Regulator
  • Strong & Resistant, Ideal for Scootering, Deep, Cold & Wreck Diving
  • Downstream Demand Valve
  • Material: Nickel Plated Brass
  • Rugged Design
  • Anti-Freeze Function, "Radiator Action" of Metal
  • Vortex Assist Design (V.A.D.) System
  • Mesh-Grid System
  • Compact and Ergonomic Exhaust Tee
  • Soft Hypoallergenic Silicone Mouthpiece
  • Mouthpiece Provides Less Jaw Fatigue
  • Easy-to-Push Purge
  • Regulator Necklace:
  • Silicone Regulator Necklace
  • Attaches Easily to Any Regulator 2'nd Stage Mouthpiece
  • Allows Regulator to Hang Close Under Chin
  • Keeps Second Stage Where-You-Need-It!
  • Durable, Shape Retaining Silicone Design
  • Dead Bolt Snap:
  • High Quality Marine Grade 316 Stainless Steel
  • Spring Loaded Gate Clip
  • 360° Swivel
  • Mares XR Laser Engraved
  • Corrosion and Rust Resistant
  • Swiveling Bases Easy to Use Design
  • Dimensions: 3" (7.6 cm)
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