A compact kit.
A bag ready for wet gear.
The TRIMIX T-500SM brings the 0.5L cylinder and K2 full-face mask together in a new mesh carry bag. Choose a Black or Green cylinder, then add the small scuba refill adapter if you need that configuration.
Folds for storage
The flexible mesh bag folds down when empty, making it easier to put away between outings.
Lets water drain
The open mesh allows water to pass through after carrying wet equipment.
Easy to air-dry
Breathable mesh helps the bag air-dry. Let the bag and equipment dry fully before storage.
One mask.
Two illustrated setups.
The supplied interchangeable snorkel section is shown alongside the cylinder connection. The K2 mask connector joins the compatible cylinder assembly to the mask; the optional scuba refill adapter has a separate purpose.
Follow the instructions for the mask, cylinder and each connector. The cylinder manual below covers the cylinder only; the complete setup must stay within the most restrictive component limit.
Choose your color and refill option.
Both colors use the new mesh bag. Select your options above to see the exact matching configuration image.
Without scuba adapter
The mesh-bag mask and cylinder kit, without the optional small scuba refill adapter.
With scuba adapter
The same kit with the compact small refill adapter shown below. This is the 0.5L kit option; it is different from the larger adapter used in our 1L and 2L kits.
What comes together
- T-500 0.5L cylinder with breathing-valve assembly and pressure gauge
- K2 full-face snorkeling mask and mask-to-cylinder connector
- New foldable mesh carry bag
- Anti-loss leash, interchangeable snorkel section and silicone mouthpiece shown in the kit image
- Small scuba refill adapter only when the “With scuba adapter” configuration is selected
The action camera, hand pump, compressor and refill source are not included in this non-pump kit.
Know your mask connections.
The K2 full-face mask brings the lens, adjustable head strap and front exhaust and drain components into one assembly. Its interchangeable side connections let you see how the snorkel and compatible cylinder configurations fit together.
The camera mount is shown for illustration. An action camera is not included. Choose the configuration suited to your equipment, training and component instructions.
A closer look at the T-500.
The 0.5L cylinder works with a breathing-valve assembly that includes a pressure gauge, refill port, pressure-reduction chamber and overpressure-protection component. The gauge helps you monitor remaining pressure; it does not provide a guaranteed countdown of breathing time.
- Cylinder capacity
- 0.5L
- Maximum pressure
- 200 bar / 20 MPa
- Fill connection
- 8mm inflation plug
Specifications above refer to the T-500 cylinder. Follow the markings on your actual cylinder and the complete user manual.
Before you choose
Is the mesh bag the same as the old Oxford carry case?
No. This listing now uses the new flexible mesh carry bag. It folds when empty, lets water drain and is easy to air-dry. The current configuration photos show the bag supplied with this kit.
Are the mask connector and scuba refill adapter the same item?
No. The K2 mask connector is part of the mask-and-cylinder setup. The small scuba refill adapter is a separate optional filling accessory. Choose “With scuba adapter” if you want it included, and confirm the refill connection with us before ordering.
Does this kit use the large adapter shown with the 1L and 2L kits?
No. The optional adapter pictured here is the small version for this 0.5L kit. Its image and configuration are separate from the larger adapter shown in the 1L and 2L kit listings.
How do I get a quote for my exact configuration?
Select Black or Green and choose with or without the scuba adapter. Then use “Ask about this setup”. Your enquiry will identify the selected configuration. Prices are currently available on request, with quotations in USD.
How long can I use one fill?
Available breathing time depends on depth, breathing rate, activity, starting pressure and the reserve required by your dive plan. The cylinder manual does not guarantee a fixed runtime. Monitor pressure throughout use and follow appropriate training and the instructions for the complete setup.
Can I take the kit on a flight?
Check with your airline and the relevant security authority before travel. Ask about cylinder inspection, preparation and packing requirements for your route. The compact format is not a guarantee of airline acceptance.
Is previous training needed?
Compressed-air diving requires appropriate training and a dive plan. Read the separate mask and cylinder instructions, check fit and equipment condition, and stay within the limits of every component. This kit is not a substitute for scuba training.
0.5L refilling guide
Three ways to refill your T-500.
Choose a refill method before choosing your kit. A compatible electric compressor, a scuba refill adapter or a high-pressure hand pump can provide different levels of convenience and effort.
Electric compressor
Approx. 10 minutes*
A powered filling option with less manual effort. Use compatible high-pressure equipment that supplies breathing-quality air and the filtration required by the T-500 manual. Monitor the equipment and pressure throughout filling.
Scuba refill adapter
Approx. 16 seconds*
Transfers air from a compatible, adequately pressurized source cylinder. Source pressure, cylinder capacity and the valve connection affect the result. This is a controlled transfer, not a timed challenge.
High-pressure hand pump
Approx. 25 minutes*
Requires sustained physical effort and is the slowest option in these reference estimates. Useful as a backup where powered filling is unavailable. Use the specified filtration and follow the pump’s work/rest instructions.
Illustrative refill setups featuring the Black TRIMIX T-500. Confirm compatibility with your actual filling equipment.
*Merchant-provided reference estimates for a 0.5L cylinder filled from 0 to 20 MPa / 200 bar. These are not guaranteed fill times or recommended filling rates. Actual results depend on equipment, source pressure, temperature and operator pace. The video below does not verify these estimates. Follow the cylinder markings and equipment instructions; never exceed the permitted pressure.
See the small adapter connection.
This demonstration shows a compact clamp-style adapter connecting a large source cylinder to a small cylinder, followed by isolation, pressure release and disconnection.
Use this merchant-supplied clip as a connection reference. Confirm compatibility with your actual equipment.
Small scuba refill adapter
This is the compact adapter offered with the 0.5L kits, separate from the K2 mask connector and the larger adapter used in our 1L and 2L listings.
- Working pressure
- 20 MPa / 200 bar
- Cylinder-side fill connection
- 8mm quick coupling
- Materials
- Stainless steel and aluminum alloy
- Finish
- Anodized surface
- Overall size
- 13.7 × 6.3 × 2.5 cm
- Net weight
- Approx. 0.25 kg
Adapter specifications are supplied by the merchant. An 8mm connection alone does not establish source-valve compatibility. Send us a photo or specification of your source valve before ordering.
What should I check before using a refill adapter?
- Have a qualified fill provider confirm that the source cylinder, valve, adapter and receiving cylinder are compatible and in serviceable condition. Use breathing-quality compressed air.
- Follow the adapter instructions to secure the connection and connect the receiving cylinder. Check seals, fittings and the gauge before starting.
- Control and monitor the transfer. Stop within the pressure limit marked on the receiving cylinder; stop immediately if there is a leak or malfunction.
- Close the source valve, release trapped adapter pressure as directed and confirm that the connection is depressurized before disconnecting. Never loosen a pressurized connection.
This overview does not replace the full cylinder, adapter or filling-equipment instructions. Arrange qualified instruction before filling.
Check the selected kit’s packing list. A source cylinder and electric compressor are not included. A hand pump is supplied only with pump-kit listings; the small refill adapter is included only when the corresponding option is selected.
T-500 manual & essential guidance
Get to know your cylinder before use. Read the complete multilingual user manual, including its English section.
Cylinder guidance only: This is the manual for the T-500 cylinder, not the K2 mask, adapter or hand pump. Follow separate instructions for every component; the complete setup must stay within the most restrictive component limit.
- Normal-use depth
- Less than 10 m
- Maximum pressure
- 200 bar / 20 MPa
- Water temperature
- Above 10°C
- Use suitable breathing air. The manual requires breathing-quality compressed air and prohibits pure oxygen. Use compatible filling equipment and a qualified fill provider.
- Check before every use. Do not fill or use equipment that is damaged, leaking or malfunctioning. Follow the manual’s checks for water or foreign material in the breathing cavity.
- Care for it after use. Clean with fresh water as directed, dry before storage and keep it away from sunlight, high heat and impacts. Arrange annual professional inspection or maintenance.
Why does the manual also mention 30 m?
The normal-use depth in section 1.1 is less than 10 m. The reference to depths within 30 m is only for emergency rescue or a backup air supply for professional diving equipment. It is not a recreational depth rating. Stay within your training and the limits of the complete setup.
How long will a fill last?
The manual does not promise a fixed runtime. Depth, breathing rate, activity, starting pressure and the air reserve in your dive plan all affect available breathing time. Monitor the gauge and plan the return and ascent with sufficient air.
What are the storage and service requirements?
The manual specifies storage at 5–30°C and 40–70% relative humidity, away from sunlight, heat and harmful chemicals. It calls for annual professional inspection or maintenance and cylinder hydrostatic testing every five years. Have a qualified provider confirm the schedule required by the cylinder markings and local rules. Do not attempt unauthorized disassembly.
Find this manual in Tutorials · Read the cylinder FAQs · Download the PDF
Source: T-500 user manual, sections 1, 4, 6 and 7. Cylinder markings, the full manual and applicable training requirements govern use. These notes are not a substitute for scuba training or a dive plan.
Reviews
There are no reviews yet.