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Regulators - 1st and 2nd Stage Set


  • Atomic

    Atomic Aquatics B2 Regulator

    From $969.95
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  • Scubapro

    Scubapro MK 25 Evo / S620TI Dive Regulator System

    $1,249.00
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  • Atomic

    Atomic Aquatics Z3 Regulator

    From $719.95
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  • Zeagle

    Zeagle F8 1st Stage with F8 2nd Stage

    $749.95
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  • Apeks

    Apeks XTX50 Dive Regulator

    $649.00
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  • Scubapro

    Scubapro MK17 EVO2 S620Ti Dive Regulator

    $1,099.00
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  • Atomic

    Atomic TFX Regulator Sealed Black

    $2,769.95
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  • Sale

    Scubapro

    Scubapro MK11 Evo/C370 Regulator System 1st and 2nd Stage Set

    $699.00 $719.00
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  • Atomic

    Atomic Aquatics B2 Regulator, Yoke with Color Kit and Z2 Octo Scuba Diving Package

    +4
    From $1,269.90
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  • AquaLung

    Aqualung Helix Compact Pro Dive Regulator Black

    $699.00
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  • Tusa

    Tusa RS1001 Dive Regulator Set Suitable for Cold Water Diving

    $499.00
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  • Atomic

    Atomic Aquatics B2 Regulator Set with Color Kit Included

    +4
    From $949.95
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  • Scubapro

    Scubapro MK25 EVO / A700 INT Dive Regulator System

    $1,299.00
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  • Sale

    Scubapro

    Scubapro MK25 EVO 300/G260 DIVE REGULATOR SYSTEM DIN

    $1,049.00 $1,063.00
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  • Sale

    Oceanic

    Oceanic Alpha 10 Regulator and cDx

    $407.96 $459.95
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  • AquaLung

    Aqualung Helix Pro Dive Regulator

    $649.00
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  • Hollis

    HOLLIS 150LX + H02 DIN (O2 REGULATOR)

    $564.95
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  • Scubapro MK25T EVO/S620 X - TI-
    Sale

    Scubapro

    Scubapro MK25T EVO/S620 X - TI

    $2,499.00 $2,785.00
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  • Sale

    Scubapro

    Scubapro MK11 300/S270

    From $599.00 $605.00
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  • Mares

    Mares Ultra 62X Dive Regulator

    $549.95
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  • Scubapro

    Scubapro MK25 EVO/S600 INT Dive Regulator with Mouthpiece & Hose Protector

    +2
    From $903.00
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  • Sale

    Scubapro

    Scubapro MK17 EVO2 C370 Dive Regulator

    $759.00 $789.00
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  • Mares

    Mares Abyss 22 Navy II Regulator

    $869.95
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  • Scubapro

    Scubapro MK25 EVO DIN 300/S620 TI Dive Regulator with Mouthpiece & Hose Protector

    +2
    From $923.00
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  • AquaLung

    Aqualung LEG3ND Elite Dive Regulator

    $1,099.00
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  • AquaLung

    Aqualung LEG3ND Elite Black Edition Dive Regulator

    $1,199.00
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  • AquaLung

    Aqualung LEG3ND MBS Dive Regulator

    $999.00
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  • Scubapro

    Scubapro MK19 EVO/A700

    $1,299.00
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  • Sale

    Scubapro

    Scubapro MK19 EVO/G260

    $1,049.00 $1,064.00
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  • Sale

    Mares

    Mares Ultra ADJ 82X Regulator

    $387.97 $595.95
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  • Mares

    Mares Epic ADJ 82X Regulator

    From $650.24 $999.95
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  • Scubapro

    Scubapro MK25 Evo BT / A700 Carbon Black Tech Dive Regulator System

    $1,799.00
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  • Scubapro

    Scubapro MK25 EVO YOKE INT S620Ti Dive Regulator with Mouthpiece Hose Protector

    +1
    From $923.00
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  • Mares

    Mares Regulator Dual Adj 62X -75 Anniversary Black Edition

    $698.95
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  • Sale

    Sherwood

    Sherwood Oasis Pro Scuba Diving Regulator

    $494.95 $547.00
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  • Mares

    Mares Dual Adj 62X Regulator

    From $322.95 $495.95
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  • Sale

    Scubapro

    Scubapro MK25 EVO/G260 DIVE REGULATOR SYSTEM

    $1,049.00 $1,063.00
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  • Scubapro

    Scubapro MK11 EVO Yoke S270 Dive Regulator

    $649.00
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  • Scubapro

    Scubapro MK11 EVO R105 Dive Regulator

    $549.00 $570.00
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  • Scubapro

    Scubapro MK25 EVO/A700 CARBON BT Dive Regulator DIN with Mouthpiece & Hose Protector

    +2
    From $1,729.00
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  • Scubapro

    Scubapro MK25 EVO/A700 Dive Regulator INT with Mouthpiece & Hose Protector

    +2
    $1,254.00
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  • Atomic

    Atomic Aquatics B2x Unsealed Black

    $1,499.95
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  • AquaLung

    Aqualung LEG3ND Dive Regulator

    $879.00
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  • Apeks

    Apeks XTX40 DIN Dive Regulator with Nitrox DS4

    $625.00
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  • Mares

    Mares Atlas 62X Dive Regulator

    $699.95
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  • Zeagle

    Zeagle Envoy/RaZor II

    $429.95
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  • Scubapro

    Scubapro MK25 EVOBT/S620Ti INT 60th Anniversary Carbon BT

    $2,200.00
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  • Atomic

    Atomic Aquatics Z3 Regulator Yoke Set with Z3 Color Kit Included

    +4
    From $699.95
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  • Atomic

    Atomic Aquatics T3 Regulator

    $2,369.95
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  • Atomic

    Atomic Aquatics M1 Regulator

    $1,019.95
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Scuba Regulators – 1st and 2nd Stage Sets

Discover our collection of scuba regulators including complete 1st and 2nd stage sets designed for optimal performance, safety, and comfort underwater. These high-quality regulators provide smooth airflow, reliable performance in all diving conditions, and compatibility with various tanks and dive setups. Perfect for recreational, technical, and travel divers, our regulator sets ensure effortless breathing and enhanced dive control.

Why Choose a 1st and 2nd Stage Regulator Set?

  • Reliable airflow: Consistent breathing performance at any depth and tank pressure.
  • Durability: High-quality materials like chrome-plated brass and reinforced polymers.
  • Corrosion resistance: Suitable for saltwater and freshwater diving environments.
  • Easy maintenance: Modular design allows simple servicing and part replacement.
  • Compatibility: Works with multiple BCDs and tanks for maximum versatility.

Key Features to Consider

  • 1st stage: balanced or unbalanced, diaphragm or piston design
  • 2nd stage: adjustable venturi, purge button, and ergonomic mouthpiece
  • High-flow ports for octopus and inflator hose connection
  • Environmental sealing for cold-water diving
  • Breathing performance tested across different depths

Who They’re Best For

Recreational divers: Smooth, reliable regulators for everyday diving.
Technical divers: Durable and customizable regulators for cold-water and deep dives.
Travel divers: Lightweight, compact sets ideal for easy packing.
Beginner divers: User-friendly, easy-to-maintain sets for safe learning.

Buying Tips

  1. Determine diving environment: Cold-water divers may require environmentally sealed 1st stages.
  2. Check flow performance: Balanced regulators provide easier breathing at all tank pressures.
  3. Consider comfort: Ergonomic 2nd stage mouthpieces reduce jaw fatigue during long dives.
  4. Maintenance requirements: Choose sets with easy servicing and widely available replacement parts.
  5. Hose compatibility: Ensure the regulator works with your BCD inflator and octopus setup.

Maintenance & Care

  • Rinse thoroughly in fresh water after every saltwater dive.
  • Flush the regulator to remove sand, salt, and debris from the 1st and 2nd stages.
  • Store regulators in a cool, dry place away from direct sunlight.
  • Have professional servicing annually or as recommended by the manufacturer.
  • Inspect hoses and mouthpieces for cracks or wear before each dive.

Frequently Asked Questions

What is the difference between a 1st stage and a 2nd stage regulator?

The 1st stage attaches to the tank valve and reduces high-pressure air to an intermediate pressure. The 2nd stage delivers breathable air to the diver on demand, usually through a mouthpiece.

Do balanced regulators perform better than unbalanced ones?

Yes, balanced regulators provide consistent airflow at all tank pressures and depths, making breathing easier and more reliable.

Can I use the same regulator set for cold and warm water?

Standard regulators work in warm water, but cold-water diving may require environmentally sealed 1st stages to prevent freezing.

How often should regulators be serviced?

Manufacturers recommend professional servicing at least once a year or after 100 dives, whichever comes first, to ensure optimal performance and safety.

What features improve comfort during long dives?

Ergonomic mouthpieces, adjustable venturi, and light second stage design reduce jaw fatigue and improve breathing comfort for extended dives.

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