Atomic Aquatics M1 Regulator
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Atomic Aquatics M1 Regulator - Yoke Sealed is backordered and will ship as soon as it is back in stock.
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Product Information
The Atomic Aquatics M1 Regulator is a first and second stage scuba regulator built around a balanced Jet Seat high-flow piston first stage, with a chrome-plated brass body and Monel internal components, and is factory-ready for Nitrox mixtures up to 50% or oxygen mixes up to 80% when special guidelines are followed. It is available in DIN Sealed or Yoke Sealed configurations.
Who it is for
Atomic Aquatics positions the M1 for recreational divers who want to extend their capabilities as well as technical and specialty divers working in conditions such as caves, cold water, and deep diving.
Key details
The first stage uses a balanced Jet Seat high-flow piston design housed in a chrome-plated brass body with Monel internal components for corrosion resistance and oxygen compatibility, and it is factory-sealed and freeze-protected to keep out silt and sand. The second stage is precision-machined brass with Zirconium plating and Titanium. Features include a patented AFC (Automatic Flow Control) with a Rapid Adjustment Knob, a thermal heat sink, a surge-protected front cover, a super-dry exhaust valve, a wide exhaust deflector, a stainless Seat Saving Dynamic Orifice, and a dual silicone mouthpiece. The valve body is Zirconium/Nickel over brass. Combined weight for the yoke version is 2.6 pounds, and the service interval is 2 years or 300 dives, whichever comes first.
Compatibility and sizing
The M1 has 2 fixed high-pressure ports and 5 low-pressure ports on a swivel cap for hose routing, and it is published in DIN Sealed and Yoke Sealed configurations to match tank valve type.
DiveCatalog.com is an authorized Atomic Aquatics dealer and has been a dive shop in Irvine, California since 2003. Call 888-701-4017 or chat with us if you have questions about fit or compatibility with your current gear.
- First stage materials: Chrome-plated brass body with Monel internal components for corrosion resistance and oxygen compatibility.
- First stage design: Balanced Jet Seat high-flow piston first stage.
- Second stage materials: Precision-machined brass with Zirconium plating and Titanium.
- Airflow control: Patented AFC (Automatic Flow Control) with a Rapid Adjustment Knob.
- Cold water features: Thermal heat sink for cold water performance.
- Rough water protection: Surge-protected front cover for rough water conditions.
- Exhaust system: Super-dry exhaust valve with a wide exhaust deflector to disperse bubbles.
- Valve orifice: Seat Saving Dynamic Orifice made of stainless steel.
- Mouthpiece: Dual silicone comfort mouthpiece with tear-resistant bite tabs.
- Sealing and freeze protection: Factory-sealed first stage, freeze-protected, prevents silt and sand contamination, with an engraved heat-protecting jam nut.
- Gas compatibility: Factory-ready for Nitrox to 50% or oxygen mixes to 80% when special guidelines are followed.
- Port configuration: 2 fixed high-pressure ports and 5 low-pressure ports on a swivel cap.
| Brand | Atomic Aquatics |
| Model | M1 |
| First Stage Body | Chrome-plated brass |
| First Stage Internal Components | Monel |
| First Stage Design | Balanced Jet Seat high-flow piston |
| Valve Body | Zirconium/Nickel over brass |
| Second Stage Body | Precision-machined brass with Zirconium plating and Titanium |
| HP Ports | 2 fixed |
| LP Ports | 5 on swivel cap |
| Gas Compatibility | Nitrox to 50%; oxygen mixes to 80% when special guidelines are followed |
| Weight | 2.6 pounds combined (yoke version) |
| Service Interval | 2 years or 300 dives, whichever comes first |
| Sealing | Freeze-protected, factory sealed |
| Configurations | DIN Sealed, Yoke Sealed |
| Use | Recreational and technical scuba diving |
⚠️ WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
How often does a scuba regulator need servicing?
Follow the interval in your regulator's manual, since manufacturers commonly specify an annual inspection or a set number of dives and many warranties depend on it. A regulator is life-support equipment, so service belongs with a factory-trained technician rather than being attempted at home. Have it looked at sooner than scheduled if you notice increased breathing effort, free-flow, bubbles, or water in the second stage.
How do I rinse and care for a regulator after diving?
Make sure the dust cap is dry and firmly seated over the first-stage inlet before the regulator goes anywhere near water, because water inside the first stage is the leading cause of internal corrosion. Rinse in fresh water without pressing the purge button, since purging while depressurized can draw water back into the second stage. Shake out the water and hang it to dry with the hoses in wide, gentle loops rather than tight bends.
Can I fly with a scuba regulator?
Regulators travel well and are usually best carried in hand luggage where they will not be crushed or lost. A regulator holds no gas of its own, so there is nothing inherently problematic about it on an aircraft, though the airline and security screeners always have the final say. Pack it dry with the dust cap in place, in a padded regulator bag or wrapped in soft gear.
Can I use my regulator with nitrox?
Many modern regulators are supplied as suitable for nitrox mixes up to 40 percent oxygen, which is the widely used recreational industry standard, while anything above that requires dedicated oxygen-clean equipment and procedures. Confirm what your specific regulator's manual states, and follow your nitrox training and your fill station's requirements. Never assume a regulator is oxygen-service clean simply because it looks clean or is new.
What is the difference between DIN and yoke regulators?
A yoke (A-clamp) fitting clamps over the tank valve and is the most common connection across much of the recreational world, while a DIN fitting screws into the valve and is standard in much of Europe and in technical diving. DIN captures the o-ring inside the threads, which many divers consider more secure, but yoke is often what rental cylinders provide. Adapters exist in both directions, so check what is used where you dive before deciding.
What is the octopus regulator for?
The octopus is your backup second stage, carried so you can share air with a buddy who is out of gas, or breathe from it yourself if your primary fails or free-flows. It is normally on a longer, brightly colored hose so it is easy to find and hand over under stress. Secure it in the triangle between your chin and the bottom of your rib cage so it is instantly accessible and not dragging through sand or coral.
How should I store a regulator between dive trips?
Store it fully dry, out of sunlight, with the dust cap in place and the hoses in wide loops rather than tightly coiled. Avoid hanging it by the second stages for long periods, which stresses the hose fittings; laying it flat in a padded bag or hanging it by the first stage is kinder. If it has sat unused for a long stretch, have it checked before your next trip rather than assuming it is ready to dive.
What makes the Atomic M1 regulator good for cold and rough water?
The Atomic M1 is designed for cold and rough conditions through several features. Its second stage has a thermal heat sink, a super-dry exhaust valve, and a wide deflector, while the first stage is factory-sealed to keep contaminants out. Atomic positions it for specialty diving, whether recreational or technical.
Is the Atomic M1 first stage sealed?
Yes, the Atomic M1 first stage is factory-sealed. It is built from chrome-plated brass with Monel key internals chosen for their strength, corrosion resistance, and oxygen compatibility.
Can I dive Nitrox with the Atomic M1?
Yes, the Atomic M1 comes factory ready for Nitrox up to 50%, and up to 80% oxygen when following special guidelines. This makes it suitable for both recreational Nitrox diving and more advanced applications.
How often does the Atomic M1 need servicing?
The Atomic M1 has a service interval of 2 years or 300 dives, whichever comes first. Its lifetime warranty is not contingent on service, and the metal parts carry corrosion coverage for life. Atomic requires purchase from an authorized dealer for warranty coverage, and purchases from us qualify.
What is the warranty on the Atomic Aquatics M1 regulator?
The M1 carries a limited lifetime warranty, with metal parts warranted against corrosion for life. All components are covered against material and manufacturing defects for the first 2 years, and consumables like mouthpieces, hoses, o-rings, filters, and valve seats are covered for 2 years. Titanium components are covered for life against corrosion. Warranty registration is required within 30 days of purchase to activate coverage.
How much does the Atomic Aquatics M1 regulator weigh?
The yoke version of the M1 weighs 2.6 pounds combined for the first and second stage. This figure is specific to the yoke-sealed configuration as published by Atomic Aquatics.
What is the Atomic M1 second stage made of?
The M1 second stage is precision-machined brass with Zirconium plating and Titanium. The M1 also features a stainless steel Seat Saving Dynamic Orifice and a dual silicone comfort mouthpiece with tear-resistant bite tabs.



















