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Atomic Aquatics Z2 Regulator

8 reviews
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About Atomic Z2 Regulator

Featured Reviews

See all 8 reviews

The best regulator I have ever used.

By Dive B.

With over 800 dives, this is by far the easiest breather i have ever used!


Great regulator

By Billy F.

Great regulator. Smooth breathing at any depth. I liked mine so much I got one for my girlfriend too. Would definitely reccommend.

Atomic Aquatics most compact and economical regulator system, the Z2 may be the least expensive of the Atomic line, but its combination of performance, ergonomics and materials are unmatched by the most expensive competitors. Built upon the B1/T1 platform, it shares the same breathing performance and patented features. The Z2 is a balanced flow-thru piston design using Atomics Jet Seat high-flow stainless-steel piston. Exclusive high-pressure piston seal system is self-lubricating for low friction and low maintenance. The Atomic Jet Seat System has no sharp edges that can damage the seat over time, like most competitors' first stages. Instead, Atomic employs a conical seat and blunt-end piston. Atomics' valve seats are precision machined from an extremely strong aerospace specification seat material. This design combination is the most reliable seat system in the industry and enables the seat to go 2-years or 300 dives without service. Diving performance is superior at even low tank pressure.

The regulator is Nitrox ready for mixtures up to 40% out-of-the-box. The first-stage has 2 high-pressure (HP) 7/16" and 5/7 low-pressure (LP) 3/8" ports.

The Z Series second stage is a balanced linear flow design for extremely easy breathing at all depths and dive conditions. The Z Series second-stage is built-to-last with a zirconium plated brass demand valve body, titanium lever and sealing orifice. The diaphragm is made from high-quality silicone rubber. This pneumatically balanced poppet second-stage has Atomics patented seat saving dynamic orifice which unlike most second stage orifices is a floating valve design which reduces wear on the second stage poppet seat when the regulator is not pressurized adding life to this important seal.

The Z Series second stage regulator is equipped with Atomics patented Automatic Flow Control (AFC). This unique diaphragm activated vain automatically controls the flow and Venturi effect of the second stage for optimum breathing resistance at all depths. The second stage does have a rapid adjustment knob for rare special situations. The regulator comes equipped with a 3/8" threaded 32" (81.3 cm) low-pressure hose. The regulator weighs 2.3 lbs. (1,070 g) and comes with an owner's manual.

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

Warranty Information

This product has a limited lifetime warranty.


Atomic Z2 Regulator Features

  • Atomic Aquatics Z2 Regulator:
  • Atomic Aquatics Most Compact and Economical Regulator System
  • Nitrox Ready for Mixtures Up to 40% Out-of-the-Box
  • 3/8" Threaded 32" (81.3 cm) Low Pressure Hose
  • Weight: 2.3 lbs. (1,070 g)
  • Owner's Manual
  • First-Stage:
  • Chrome Plated Brass and 316-Grade Stainless Steel
  • Balanced Flow-Thru Piston Design
  • Atomics Jet Seat High-Flow Piston
  • Exclusive High-Pressure Piston Seal System is Self-Lubricating
  • Self-Lubricating for Low Friction and Low Maintenance
  • No Sharp Edges: Conical Seat and Blunt-End Piston
  • Precision Machined from an Extremely Strong Aerospace Specification Seat Material
  • Most Reliable Seat System in the Industry
  • Seat System: 2-Years or 300 Dives w/o Service
  • 2 High-Pressure (HP) 7/16" Ports
  • 5/7 Low-Pressure (LP) 3/8" Ports
  • Second-Stage:
  • Balanced Linear Flow Design
  • Pneumatically-Balanced Poppet Second-Stage
  • Built-to-Last: Zirconium Plated Brass Demand Valve Body, Titanium Lever and Sealing Orifice
  • Atomics Patented Seat Saving Dynamic Orifice
  • Unique Diaphragm Activated Vain Automatically Controls the Flow and Venturi-Effect
  • Optimum Breathing Resistance at All-Depths
  • Rapid Adjustment Knob for Rare Special Situations
  • High Quality Silicone Rubber Diaphragm

Atomic Aquatics Z2 Regulator Customer Reviews

Review Summary


(based on 8 reviews)


of respondents would recommend this to a friend.

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Most Liked Positive Review


The best regulator I have ever used.

With over 800 dives, this is by far the easiest breather i have ever used!

Reviewed by 8 customers


Great regulator

By Billy F.

Great regulator. Smooth breathing at any depth. I liked mine so much I got one for my girlfriend too. Would definitely reccommend.


Z2 Regulator Atomic Aquatics


from Miami, FL, US

high precision performance , high end quality and an economic value.


Effortless breathing at any depth.

By Bryan

Awsome service.


Great Regulator

By Jon

Works perfect


Does't get any better!!!

By kennybangadrum

Delivered quick and Aaron takes great care of his customers!!


The best regulator I have ever used.

By Dive B.

With over 800 dives, this is by far the easiest breather i have ever used!


easy breather

By Cactuspk

Great reg, but I'd spring for the one with a swivel if I had to do it again. The hose is fairly stiff and if you turn your head, you really notice it.



By cerarski

Great Bang for the buck


Questions & Answers

Questions about this item:

Shopper  Why Did You Choose This?
Kevin W  Dive shop recommendation. Good reviews.
manolis p  Hello, I am very confused after reading so much information. I do not know which one to choose ? Sherwood SR2 VS Atomic Aquatics Z2.
SEAN H  Manolis, What kind of diving are you looking to get into? That may help you figure out what regulator to get. I can say that the Atomic brand has been great. My wife uses this reg and she's been happy with it. Sean
THOMAS D  I can't comment on the Sherwood but have had the atomic for 2 years and have not had any problems at all. Very easy breathing. Seems well made.
AJ N  150 dives later, I have no regrets or complaints about my Atomic Z2. None.
JAY S  I chose the atomic aquatics z2 and am very happy with it no trouble at all
Mark R  When the other poster asked if this comes with a "regular old rubber hose", i think he was asking if these use standard hoses, or do they use some kind of unique, proprietary hose. So, will "regular" low pressure hoses from most any vendor install on these? Thanks.....
BILLY C  yes they will, braided hoses as well.
AUSTIN M  Yes any low pressure hose can be substituted for the included one.
MATT K  I did successfully install hoses for my octopus (Sherwood) and my computer (Oceanic) on this regulator. Not positive about others, but the ports are pretty standard.
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