Name: Atomic Aquatics B2 Regulator Din
Brand: Atomic Aquatics
SKU: 03-0027-7P
Availability: InStock

Atomic Aquatics B2 Regulator Din

The B2 combines a balanced piston first stage with titanium second-stage components. Automatic Flow Control adjusts gas delivery as depth changes, while the rapid adjustment knob and Comfort Swivel help you fine-tune a comfortable recreational setup.

Features and benefits

Brass first stage with titanium second-stage components. The chrome-plated brass body provides a durable first stage, paired with lightweight, corrosion-resistant titanium parts in the breathing mechanism.
Balanced Jet Seat piston. The balanced piston regulates intermediate pressure as cylinder pressure falls, helping keep breathing response consistent.
Balanced second stage. Pneumatic balancing reduces the force needed to open the demand valve, helping the second stage respond smoothly as you inhale.
Automatic Flow Control. AFC changes the Venturi assistance as depth changes, reducing the need for manual flow adjustment. The Rapid Adjustment Knob provides additional control for handling and specific diving situations.
Rotating hose turret. The low-pressure turret turns to follow hose direction, making it easier to arrange hoses without tight bends around the first stage.
Comfort Swivel. The second-stage hose connection moves with your head, helping reduce hose pull and strain at the mouthpiece.
Seat-saving design. When the regulator is depressurised, the dynamic orifice lifts away from the low-pressure seat. This reduces prolonged loading on the seat during storage.
Dual-silicone mouthpiece. The mouthpiece combines a soft feel with tear-resistant bite tabs for a comfortable, secure hold.
Optional environmental sealing. A sealed configuration can help protect the first-stage mechanism from silt and sand. Confirm the supplied configuration when choosing your regulator.

Setup and compatibility

Connection: DIN. Choose the fitting that matches your cylinder valve and its pressure rating.

Care, rinsing and storage

After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages and connected hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.

For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.

Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.

Before each dive, inspect the mouthpiece, hoses and connections for wear or damage. Have your regulator serviced by an authorised Atomic Aquatics technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.

Technical Specs

Atomic Aquatics B2 Regulator Din technical specifications
Brand	Atomic Aquatics
Main model / configuration	Atomic Aquatics B2
Product type	Regulator
Regulator type	Primary Regulator
Regulator connection	DIN
First-stage design	Balanced Jet Seat high-flow piston
Second-stage design	Pneumatically balanced
High-pressure ports	2
Low / medium-pressure ports	5 on swivel cap
Environmental sealing	Optional environmental sealing; configuration dependent
Breathing adjustment	Automatic Flow Control; rapid adjustment knob
Nitrox / oxygen compatibility	approved for non-dedicated EAN use with mixtures up to 40%.
First-stage materials	Chrome-plated brass and 316 stainless steel
Second-stage materials	Titanium components
Hose	Polished 316 stainless steel Comfort Swivel

Based on Atomic Aquatics product information.

In-stock orders placed before 12 noon Melbourne time on weekdays are usually dispatched the same day once payment is confirmed. This excludes public holidays, pre-orders, backorders, special orders and custom orders. Dispatch times can vary. Delivery time depends on the carrier and your location.

Standard mainland Australian shipping is $20. Click & Collect from our Hallam store is free once your order is ready.

Large or bulky gear: additional freight charges apply on top of standard shipping: large dive bags $30; long freediving fins $15; long spearguns $20. Scuba tank freight is shown at checkout.
Rural, remote & offshore: rural means anywhere outside metropolitan areas. Carrier availability and additional charges may apply, including for island and territory destinations. Our team will contact you if an extra freight quote is needed.

The available delivery rate for your order is shown at checkout.

Need your gear urgently? You are welcome to arrange your own same-day courier or Uber pickup from Hallam. Call 03 9702 3694 before booking so we can confirm payment, that your order is packed and ready, and a collection time. Tell us who will collect and give your driver the order number. You arrange and pay the courier directly; delivery timing depends on the provider.

Read our full shipping and delivery information →

Contact us within 30 days of delivery to request a refund, exchange or optional store credit on eligible unused goods within Australia. Refunds go to the original payment method. Keep goods clean and undamaged with tags, original packaging and all accessories. No restocking fee applies to eligible returns meeting these conditions.

For change-of-mind returns and size exchanges, you pay return postage and replacement shipping. Original delivery charges are not refunded. Water-tested goods, clearly marked clearance items and genuinely custom-made or personalised items are excluded from change-of-mind returns. Ordinary discounted goods remain eligible.

For product problems, please call 03 9702 3694 before returning an item so we can help and explain the next steps.

Still unsure which size to choose?

Call our experienced dive instructors on 03 9702 3694 before ordering. Have your measurements and preferred product ready so we can help you choose the most suitable size. Fit varies between brands and models.

Read our full returns and exchanges policy →

FREE CLICK & COLLECT
Usually ready same day*

Select local pickup at checkout. We will email you when your order is ready. Please wait for your ready-to-collect confirmation before visiting, then bring your confirmation email and photo ID.

Need your gear urgently? You can arrange your own same-day courier or Uber pickup. Call 03 9702 3694 before booking so we can confirm payment, that your order is packed and ready, and a collection time. Tell us who will collect and give your driver the order number. You arrange and pay the courier directly; delivery timing depends on the provider.

Collect from our Hallam store
Factory 4 / 56–60 Hallam South Rd
Hallam VIC 3803

*For items in stock at our Hallam store during opening hours, subject to order processing. Available-to-order and special-order items take longer. Collection is unavailable while the store is closed.

View collection details and opening hours →

Can I collect my order from the store?

Yes. Choose free local pickup at checkout and wait for your ready-to-collect email before visiting our Hallam store. Bring your confirmation and photo ID. See Click & Collect details.

How do I choose the right size?

Use the product's size chart where available and compare your measurements with the guide for that brand. Sizing varies between brands and products. Still unsure? Call our experienced dive instructors on 03 9702 3694 during business hours before ordering. Have your measurements and preferred product ready. For fins and boots, tell us which socks or dive boots you will wear.

How do I check availability?

Select your required options, such as colour and size, to see availability for that variation. “Available to order” means the item may need to be sourced before dispatch. Call 03 9702 3694 to check the current lead time before ordering, especially if you need your gear for a trip or a particular date.

When will my order be dispatched?

Can I exchange an item if it does not fit?

Contact us within 30 days of delivery to request a refund to the original payment method, exchange or optional store credit on eligible unused goods. You pay change-of-mind return postage and replacement shipping; original delivery charges are not refunded. No restocking fee applies to eligible returns. Clearance and genuinely custom-made items are excluded from change-of-mind returns. Read the return conditions and next steps.

Can you help me choose the right gear?

Yes. Call 03 9702 3694 during store hours or email [email protected]. Tell us which product you are considering and how you plan to use it.

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