Atomic B2X Regulator Sealed DIN
By merging the distinctive second stage design of Atomic Aquatics in titanium with a first stage featuring a sleek black Diamond-Like Carbon (DLC) over chrome plating, the B2x achieves a remarkable balance. Utilising Atomic Aquatics' proprietary Diamond-Like Carbon process, the B2x attains unparalleled tribological properties unmatched by any other brass regulator, ensuring supreme durability and corrosion resistance without compromising the seamless operation of the first stage. The DLC coating gives 16x more protection than just the raw metal.
The original Atomic Aquatics B2 has garnered more awards from independent tests and reviews than any other regulator on the market. The signature breathing performance of the T3 was first engineered into the B2 and then the B2x with virtually the same corrosion resistance. The B2x is ideally suited to divers who want flagship breathing performance in a robust, long-lasting package — whether diving warm tropical waters or cold demanding environments.
First Stage Features
- DLC coating over chrome-plated brass
- Atomic Aquatics exclusive balanced Jet Seat high-flow piston
- Option to seal at dealer to prevent outside contamination from silt and sand
- Nitrox ready – approved for non-dedicated EAN use with mixtures up to 40%
- 2 HP fixed ports / 5 LP ports on swivel cap
- EN250A certified
Second Stage Features
- All-titanium construction and materials – same as the T3
- Pneumatically-balanced poppet, high-flow case and lever design for easy breathing at all depths and tank pressures
- Patented Atomic Aquatics AFC – Automatic Flow Control eliminates manual Venturi adjustment as you dive deeper; no dials to turn or buttons to push
- Soft overmoulded Rapid Adjustment Knob for manual detuning in special situations such as surf entries or octo use
- Patented Titanium Seat Saving Dynamic Orifice maintains crisp like-new factory tuning and prevents damage during storage
- Patented Atomic Aquatics Comfort Swivel – polished 316 stainless steel with black PVD coating, allowing 30° rotational movement without hose binding or kinking
- Dual material second stage cover enables entire front to be used for purge
- Elliptical exhaust valve dramatically reduces exhalation effort at depth
- Dual silicone comfort fit mouthpiece with tear-resistant bite tabs – both comfortable and durable
Specifications
| Specification | Detail |
|---|---|
| First Stage Type | Piston |
| First Stage Air Supply | Balanced |
| First Stage Connection | DIN (Sealed) |
| HP Ports | 2 |
| LP Ports | 5 |
| Second Stage Breathing Resistance | Adjustable |
| Second Stage Venturi | Automatic Flow Control (AFC) |
| Hose Material | Rubber |
| Nitrox Compatible | Yes (up to 40% EAN, non-dedicated) |
| Certification | EN250A |
| What's in the Box | First stage, second stage, hose |
VIDEO CONSULTATIONS NOW AVAILABLE: We're bringing our highly experienced and knowledgeable staff to you with live-streaming consultations. If you need help choosing the right bit of kit or the best size before buying or even advice on whether a purchased item is the right fit for you, then book yourself a consultation appointment.
We offer free tracked UK standard delivery on orders over £50 (Excluding Weights and Cylinders, as they must go on a separate service to your order)
Standard UK delivery and Next Business Day UK delivery rates are calculated at checkout and offers a number of courier options for maximum convenience to you.
International shipping rates depend on items, shipment weight and destination. Shipping costs are calculated at checkout.
Estimated delivery times are shown during checkout and reflect your chosen delivery method. More Details
60 Day Stress Free Returns
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 60 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back, and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee, but we will let you know about these items before we 'special order' them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return. More Details
Returning To Chiswick Store
We want to make your shopping experience as seamless and enjoyable as possible, even when it comes to returns. That’s why we offer hassle-free returns at our Chiswick store. But there’s more—when you visit to make a return, you can also pre-order items to be available for collection. This means we’ll have a range of sizes ready for you to try on, ensuring you find the perfect fit before leaving the store.
Shop with Confidence, Wherever You Are
To make things even easier, we offer complimentary video consultations with our expert team. Whether it’s before or after your purchase, our specialists can guide you through sizing, fit, and styling—all from the comfort of your home. It’s like having your own personal VIP shopping experience, tailored just for you.
From returns to reorders, we’re here to help you find exactly what you need with zero stress.
Book Video Consultation: Book Now
We offer the option for customers to choose ‘Pickup in store’ as a shipment method, allowing your order to be picked up from our Chiswick store at a time and date that works for you (within our business hours). The process is really easy, but we'll run through it here:
Step 1 - Add products to your cart:
Browse our vast selection of diving and snorkelling equipment, adding the kit you want to your cart.
Step 2 - Head to your cart:
Click on the cart icon to see a summary of the items you are about to purchase.

Step 3 – Review Your Order and Proceed to Checkout:
Once you're satisfied with the items in your cart, you can add a note to your order under the "Order Summary" section if desired. When you're ready to proceed, simply click "Checkout" to complete your order.
Step 4 - Customer Information:
If you have a Mike's Dive Store account, simply log in to autofill your details. If not, enter your email address, select ‘Pickup in Store,’ and then click ‘Continue to Payment’ to proceed.

Step 5 – Payment & Billing Details:
Select your preferred payment method and enter your payment information. Below, provide your billing details. If you're logged into your account, please double-check that your billing and contact information are up to date.

Step 6 – Review Order:
After entering your payment details, click ‘Review Order’ to proceed with placing your order. You will receive an email confirmation with your unique order number. We will notify you when your order is ready for collection, usually within 4 hours or sooner during our opening hours (Monday to Saturday, 10 AM to 6 PM). Please note that our hours may vary during the Christmas and New Year periods.
Our London Store Information:
Address:
Mike's Dive Store, 113 Power Rd, Chiswick, West London, W4 5PY
Telephone:
Local: 01202 037162
International: 0044 1202 037162
Email:
All Enquiries - support@mikesdivestore.com
Store Opening Times:
Mon - Fri: 10am - 6pm
Sat: 10am - 5pm
Sun: Closed
Need Help?
Our expert diving team is here to assist with your order, sizing, or product selection. We're divers ourselves, ready to support you!
Chat Hours:
Monday - Friday: 09:00 AM - 05:50 PM GMT
Prefer a call back? Just request it through the chat bubble!
Store Location
Mike's Dive Store
113 Power Rd, Chiswick, West London, W4 5PY
Store Hours
Mon - Fri: 10 AM - 6 PM
Sat: 10 AM - 5 PM
Sun: Closed
Bank Holidays: Store & Warehouse Closed (no dispatch)
Online Video Consultations
Unable to visit us? Book a live video consultation for tailored advice on equipment, fitting, or specialized gear. Get expert guidance from our team, face-to-face. Book Now
For more answers, visit our FAQs.


