BtS Drysuit Inflation Set - 1L Steel
BtS Drysuit Inflation Set - 1L Steel
1L Steel Cylinder
BtS Suit Inflation Mounting Straps
Suit Inflation First Stage

BtS Drysuit Inflation Set - 1L Steel

Sale price£267.00 Regular price£317.00
Save £50.00

A complete BtS Drysuit Inflation Set including 1L Steel Cylinder, BtS Suit Inflation Mounting Straps and First Stage with built-in Over Pressure Relief Valve. All ready to go - just add a drysuit hose.


Dispatched in 1 to 2 days

Contact Form & Details

How can we help?

If you need to contact us for any issue or assistance, you can do so online by filling out the online Contact Form, emailing us at or calling us on +44(0)1305 824 555. If it's about a purchase you've made for us please also include your order number.

Our brick-and-mortar store Underwater Explorers based on Portland, Dorset is staffed 7 days a week, including weekends and bank holidays. As it's an active store visited by divers from around the country and world regularly, if we can't make it to the phone for any reason please leave a message and we'll get back to you asap.

Any queries are usually answered the very same day and at most within 24 hours.


Why Portland?

We’re located on the Isle of Portland (in Dorset) because Portland has been one of the most popular scuba diving locations in the United Kingdom even before we set up operations here back in the year 2000.

On one side, we’re minutes away from the sheltered waters of Portland Marina and Harbour, while on the other, it’s just a brief walk to reach our famous scuba diving destination Chesil Cove and start of the 16-mile-long Chesil Beach.  

Portland’s location makes it ideal for scuba diving, freediving, snorkelling and other surface water sports activities. 

Check out how many wrecks we have around here by clicking on Scimitar Diving's Wreck & Dive Sites chart!

Alongside dive clubs, many instructors and dive schools travel here to train and offer scuba diving certification ranging from open water diver to mixed-gas tech diving or rebreather diving levels.

Whether you’re doing a boat dive from Portland Marina or Castletown or a shore dive at Chesil Cove, Portland is well known for offering many possibilities: Reef diving to wreck diving and night diving, underwater photography or underwater videography. Anything other than cave diving is possible here.

Likely being the best-stocked diving shop in the UK, at Underwater Explorers we offer in-store scuba diving equipment advice and sales, as well as gas fills, to locals and visitors (read About Us).

But... If you’re googling “scuba diving shop near me” like some, look no further, there's DirDirect online.

Here at DirDirect, we list our cutting-edge equipment for worldwide delivery and we’ve got you covered whatever your level of diving: We’re your local dive store wherever you are in the world.

All that with over 20 years of experience especially in technical diving, from training to equipment, advice and sales.


Underwater Explorers, Unit 1, Maritime Business Centre
Mereside, Portland, Dorset, DT5 1FD


A complete BtS Drysuit Inflation Set including 1L Steel Cylinder, BtS Suit Inflation Mounting Straps and First Stage with built-in Over Pressure Relief Valve. All ready to go - just add a drysuit hose.

Suit Inflation Cylinder

The steel 1L Drysuit Inflation Cylinder in white is popularly used with air as an alternative suit inflation method and sometimes with argon. It is an ideal size for any twinset diver.

  • Working pressure: 230 bar
  • Weight without valve (empty): 1.72 kg
  • Height (without valve): 28cm
  • Diameter: 8cm
  • BtS M18 valve: M18

BtS Suit Inflation Mounting Strap

A set of two BtS Suit Inflation Mounting Straps for drysuit inflation cylinders perfectly secure a suit inflation cylinder to your backplate. The steel book screws mount a drysuit inflation cylinder to the holes on the side of the backplate. The friction pad prevents the cylinder from sliding accidentally.

First Stage

The included piston first stage with a built-in over-pressure relief valve (OPV) is reliable and compact, ideal for a purpose. 

  • Built-in OPV set to 12-14 bar
  • Two LP ports (one used for OPV)
  • One high-pressure port

Recommended practice for suit inflation cylinder

  • Never allow the suit inflation cylinder to fully empty underwater
  • Storing cylinders with at least 2 bar of pressure in them
  • Keeping/transporting any empty cylinder with the valve closed
  • Drying and capping valves when the regulator is not attached
  • Periodic check against moisture/water buildup in the cylinder

Do suit inflation cylinders need testing?

Cylinders that may, during normal use, lose all gas pressure above ambient when underwater, such as side-mount, bail-out, marker buoy, buoyancy compensator, and suit inflation cylinders are at a greater risk of water ingress and internal corrosion when empty.

If freshwater is present in a cylinder, this can mean the loss of more than 2mm of the thickness of the cylinder wall within 6 months. This is increased to more than 5mm in salt water. (Diving cylinder walls are generally between 2 and 5mm thick).

While testing of the diving cylinder remains at 2.5 years for an internal visual and 5 years for a full hydrostatic test in the UK, a more frequent visual inspection by a certified test centre for suit inflation cylinders is recommended.

Deliveries outside the UK

Due to aviation regulations, the cylinder and valve will be shipped disassembled. It will be the customer’s responsibility to have the cylinder and valve re-assembled.

SKU: S20999906