Apeks DB4 1st Stage (For Apeks XL4)

reward points
Points earned on this product... 1660 = £1.66
RRP £196.00
SAVE 15%
Availability: Ships in 2-3 Days

Free UK Delivery

The Apeks DB4 is a high-performing, lightweight, cold water ready 1st stage. Designed as a workhorse of UK diving it can handle extreme environments anywhere in the world.

Free UK Delivery

The Apeks DB4 is a high-performing, lightweight, cold water ready 1st stage. Designed as a workhorse of UK diving it can handle extreme environments anywhere in the world.

Apeks DB4 1st Stage

The Apeks DB4 is a high-performing, lightweight, cold water ready 1st stage. Designed as a workhorse of UK diving it can handle extreme environments anywhere in the world.

Featuring a tough over-moulded end cap and environmentally sealed diaphragm, the DB4 is nearly impervious to ice build-up. You don’t need to worry about your air supply freezing open in ice-cold water letting you focus the stuff that matters: enjoying your dive. This robust design also protects your DB4 from impact damage or wear.

The heat exchanger diaphragm clamp’s large surface area increases the gas temperature within the first stage. This improves the cold water performance of the DB4 and helps warm the air up before being routed to your 2nd stage for breathing.

The DB4 features an overbalanced diaphragm design. When you descend the water pressure build-up around you impedes the flow of air to your second stage, making breathing difficult. This design compensates for that ensuring you receive clear, consistent flow of air throughout your dive no matter how deep you go.

Key Benefits

  • Light & Compact - The Apeks DB4 is light and compact yet impressively robust.  
  • Bulletproof Design - The DB4 features a single-piece forged body. It’s like most Apeks equipment, it’s incredibly tough.
  • Cold water Ready - The DB4 1st stage is built handle the coldest of waters thanks to its robust ice-resisting features.
  • Over-Moulded End Cap - In the worst case this ice build-up can cause 1st Stage free flow, wasting your oxygen. The over-moulded End Cap and environmentally sealed diaphragm prevents ice build-up within the DB4 ensuring your regulator functions perfectly even in the most hostile of environments.
  • Over-Balanced Diaphragm - As you descend into deeper water, the build-up of pressure on your hoses impedes the free-flow of air. An over-balanced design increases the rate of airflow ensuring your breathing remains clear and consistent no matter how deep you dive
  • Environmentally Sealed - The DB4 is environmentally sealed, not only does this help to reduce ice-buildup but prolongs the life of the 1st stage, protecting it from corrosive seawater or organisms impacting your air quality.  
  • 4LP Ports, 1HP Port - The Apeks DB4 1st stage features 4 low pressure and 1 high pressure port allowing you to connect up all of your dive gear.

2Who is the Apeks DB4 1st Stage For?

The Apeks DB4 is an industry-standard quality 1st stage. Made to handle the coldest of waters, it’s a perfect choice for UK and cold water divers. Thanks to its light design Scuba divers going abroad to warmer climates will also appreciate the DB4. It’s simple and tough design is near bulletproof, ensuring it’ll last for years of diving.

Who are Apeks?

Well known for their design and manufacturing of high quality breathing apparatus, Apeks supply more UK divers with regulators than any other dive manufacturer. Apeks has grown to become one of the benchmarks of the industry with superior standards in both engineering and design. Innovative development of not only their regulators but other diving equipment, Apeks offer a lifetime guarantee on all of their equipment, a testimony to the reliability and quality.

Write Your Own Review
You're reviewing:Apeks DB4 1st Stage (For Apeks XL4)
Your Rating


We will take every effort to get you goods to you as efficiently and effectively as possible. All orders placed before 3pm will be shipped on the day of ordering subject to payment authorization and item availability.

Any items which are out of stock will be shipped as soon as they become available. If this causes a delay in your delivery, you will be notified and your order dispatched as soon as possible. If any items are unavailable, you will be contacted and offered a replacement or refund.

UK Delivery

If your order total is under £40 then you can choose one of:

  • Royal Mail Tracked - £2.95
    (1-3 Working Days)
  • DPD Next Day - £4.95
    (Guaranteed Next Working Day + 1 Hour Delivery Window)

If your order total is over £40 then you can choose

  • Royal Mail Tracked - FREE
  • DPD Next Day -1/2 Price - Only £2.49

Please be aware that the prices above are for areas classed as "UK Mainland" by DPD which does NOT include offshore islands, Scottish highlands or Northern Ireland.

Non-UK Delivery

Our website has a comprehensive postage system which takes into account the weight of your delivery and the destination address - to get a quote for your order please add the products you'd like to buy to your basket, go to the basket page and fill in the "Estimate Shipping & Tax" section to get the price.

BFPO Addresses

This shipping method is available for British Forces Posted Overseas and addresses only. Shipping is as with all other UK mailing but please check to see that the size and weight of your order does not exceed maximums for your BFPO destination number by checking with the BFPO website.

Please note that once we have shipped the item and handed over to the BFPO service we have fulfilled our contract and delivery responsibility. All queries and problems with delivery must be taken up by yourself with BFPO and any claims must be handled between yourself and them.

Restricted Products

Please be aware that some products have restrictions on which countries we can send them to. Please enquire ahead of time if you require an order dispatched outside the EU and we can advise.

VAT Exempt

If this applies to you, the price you will pay for the goods will automatically be adjusted to remove the VAT element - you MUST choose the correct country on checkout for this to apply. We CANNOT refund the VAT once the order is completed.

You can also avoid paying VAT if you are having your goods sent to you in the UK, but are taking the goods abroad permanently within 3 months of making the purchase. You will have to pay the VAT with your order and reclaim the tax per relevant regulations - please be advised we cannot help with this process.


We stock the vast majority of products listed on our website in our Whitley Bay superstore and warehouse and these products are available for same day dispatch & next day delivery.

Due to the huge quantity of products we stock, we offer the ability to backorder products which have gone out of stock and less popular products which we don't carry stock of.

Depending on the brand these backorder products can take anywhere between 1 and 10 days to arrive into stock. We estimate 3-5 working days on average but please be aware that products from Mares and Scubapro are shipped from Italy & Germany respectively so can take a little longer.

As always if you aren't sure or want a more accurate estimate just give our team a call or email!


You can return any product that is in an UNOPENED, RE-SALEABLE condition within 30 days as long as it is not marked as clearance. Please contact us before doing this so we can confirm this ahead of time - we recommend using a recorded delivery service for any returns as you will be responsible for ensuring it reaches us.

Please get in touch to confirm a return by email or phone before sending anything back. When sending a return it is important that you include:

  • Your order number
  • Your name & a contact telephone number
  • The reason for return

We will try and get your return processed as quickly as possible but if you don't send this information it can delay the return.


If you have ordered something and it doesn't fit then we can exchange for a more suitable size, stock permitting, but you will have to pay the return postage.


Our customers have the right to cancel their orders within 14 days unless their order has been dispatched. After the order has been dispatched, it is the customers responsibility to return the item in a saleable condition and receieve either a full or partial refund.

Introducing reward points X

You can earn points by...

  • Making a purchase - get 10 points for every £1 spent
  • Referring a friend - get 5000 points for every friend you send our way and spends more than £20 on their first order.
  • Spend more, earn more - Level up and start earning more point per £ spent!

You can use points by...

  • Redeeming them at checkout - £1 per 1000 points

Login or sign up to start earning points