Skip to the beginning of the images gallery

Perfect size for stage, bailout and oxygen
Cylinder and valve are Nitrox Ready

Thunderbird AL-40 Cylinder, Brushed No-Coat

Name: Thunderbird AL-40 Cylinder, Brushed No-Coat
Brand: Thunderbird Cylinders
SKU: SPM-AL-40P
Price: 229.00 USD
Availability: InStock

Next Business Day

As low as $229

In Stock

SKU

SPM-AL-40P

Prices for these cylinders do NOT include free shipping.

Questions? Cylinder FAQ and Valve FAQ

Experienced divers prefer the trim characteristics of the aluminum 40 size cylinder for deco, bailout and sidemount applications.

Valve Type?

Valve Design?

Qty

Details

Dive Gear Express ships your Nitrox Ready cylinder with the valve installed (domestic ground US only). Unless you select no valve, the valve included in our price is a very high quality DGX Premium Pro Valve in your choice of design, plus a DIN/K insert to make the valve suitable for use with both DIN or Yoke regulator fittings. The cylinders ordered with valves have a current month Nitrox Ready decal.

Our "DGX Complete" Setup Includes:

Nitrox Ready Cylinder
DGX Premium Pro Valve in choice of design and configuration
DIN/K Insert for use with Yoke regulator fittings
Spare O-ring for valve face
Valve Protector Cap
Current Nitrox Ready Decal †

† Our shop evidence of inspection 3" X 6" dated decal (aka "VIP sticker") states "this cylinder and valve are suitable for service with compressed gases containing greater than 23.5% oxygen." That means the cylinder and valve, prior to initial use, are oxygen clean and oxygen compatible. If you plan to use this cylinder with gases containing more than 40% oxygen then the upgrade to our DGX Premium Oxygen Valve is suggested. If you select the No Valve / No VIP option, then the VIP decal and dust cap is NOT included.

Questions? Cylinder FAQ and Valve FAQ

More Information

More Information
Product Name	Thunderbird AL-40 Cylinder, Brushed No-Coat
Brand	Thunderbird Cylinders
SKU	SPM-AL-40P
Weight	16 lb
Country of Manufacture	United States
HS Code	7613.00

Reviews

Tek Tip

Aluminum Cylinders at Dive Gear Express

Features of All Aluminum SCUBA Tanks
from Dive Gear Express

Manufactured in North America
6061 alloy, an aluminum-magnesium-silicon blend
Both U.S. DOT-3AL and Canadian TC-3ALM markings
0.750-14 NPSM (3/4 NPS) threaded neck opening
Cylinder and valve are Nitrox Ready

How to Select a SCUBA Tank

Our factual but easy-to-read article helps you make this big decision by giving you information on:

Aluminum tanks versus steel tanks
Low-pressure tanks versus high-pressure tanks
Tank paints, coatings, and finishes
Tank dimensions and capacity recommendations

Read How to Select a SCUBA Tank.

SCUBA Tanks must be hydrostatically tested every five years (60 months). The larger primary cylinders typically have a factory hydro date between 3 and 9 months old, but not more than 12 months old. Smaller cylinders may have a factory hydro date up to 24 months old as these are manufactured less frequently.

Our cylinders and valves are Imperial 3/4 NPS neck threads, NOT Metric M25 neck threads, and the valves have overpressure relief devices. The cylinders have US DOT and Canadian CTC markings suitable for use ONLY in North America. Our cylinders and valves are NOT CE approved and NOT suitable for use in the European Union. Cylinders are NOT marked appropriately for use in Australia and New Zealand.

Cylinder	Brand†	Service Pressure	Water Volume	True Air Capacity	Diameter (inches)	Height * (inches)	Weight * (pounds)	Buoyancy ** Full : 500psi (pounds)
Aluminum Cylinders at Dive Gear Express
Aluminum 6	Thunderbird	3000 psi	~0.8L	5.8 ft³	3.20	11.1	2.7	- 1.4 : - 0.0
Aluminum 13	Thunderbird	3000 psi	~2L	12.8 ft³	4.38	13.1	6.0	- 1.8 : - 0.9
Aluminum 19	Thunderbird	3000 psi	~3L	18.3 ft³	4.38	18.8	8.0	- 1.3: - 0.1
Aluminum 30	Thunderbird	3000 psi	~4L	29.1 ft³	5.25	19.3	12.3	- 1.5 : - 0.0
Aluminum 40	Thunderbird	3000 psi	~5L	38.8 ft³	5.25	24.9	15.3	- 0.7: + 2.5
Aluminum 72	Thunderbird	3000 psi	~10L	69.9 ft³	6.89	26.0	27.8	- 0.7 : + 2.8
Aluminum 80	Thunderbird	3000 psi	~11L	77.5 ft³	7.25	26.1	31.5	- 1.7 : + 3.4
† Metal Impact has been rebranded as Thunderbird, cylinders are otherwise identical. * Height and weight is for cylinder only, i.e. less valve. ** Buoyancy specification is for cylinder and valve in seawater at 500 psi. Specifications are NOMINAL and supplied by Thunderbird Cylinders as of 2022.

We found other products you might like!

DGX Custom - DGX Gears FIRST/D6 O2/Stage Reg Package
$269.00
Dive Rite XT2 O2/Stage Reg Package
$349.00
Thunderbird AL-72 Cylinder, Natural Finish
As low as $299
Thunderbird AL-80 Cylinder, Brushed No-Coat
As low as $269

Thunderbird AL-40 Cylinder, Brushed No-Coat

Prices for these cylinders do NOT include free shipping.

Questions? Cylinder FAQ and Valve FAQ

Questions? Cylinder FAQ and Valve FAQ

Customer Reviews