GTT Delta, Mirage, and Phantom Oxygen Setup Guide

The GTT Delta, Mirage, and Phantom are larger Glass Torch Technologies torches with independent center fire and outer fire controls. These models have significantly more oxygen demand than smaller GTT torches such as the Cricket, Bobcat, or Lynx.

This page is written for artists deciding whether an oxygen concentrator setup is realistic. Always follow the official GTT instructions for safe operation, pressure settings, lighting, shutdown, ventilation, hoses, regulators, and leak checks.

Quick Answer

Model group	Typical pressure guidance	Bradshaw Oxygen recommendation
GTT Phantom	Commonly planned around 35 PSI oxygen for full performance	Do not assume one standard concentrator will provide full output. A custom setup, multiple oxygen sources, storage, booster, or tanks may be needed.
GTT Mirage	Commonly planned around 35 PSI oxygen for full performance	High oxygen demand. Have Bradshaw Oxygen review your full use case before purchase.
GTT Delta	Commonly planned around 35 PSI oxygen for full performance	High oxygen demand. Usually not a simple single concentrator recommendation.

Why These Torches Need More Planning

Small torches can often be matched to one concentrator because their pressure and flow needs are lower. The Delta, Mirage, and Phantom are different. They can use much larger flames, center fire and outer fire controls, and higher oxygen pressure. This means oxygen system planning must include both pressure and flow.

• One standard 10 LPM concentrator is not a full performance recommendation for these models.
• Multiple concentrators may help with flow but may not solve pressure requirements by themselves.
• Oxygen storage can help stabilize demand during larger flame use.
• Boosters increase pressure but do not create oxygen.
• Tanked oxygen may be the best fit for some high demand users.

Center Fire and Outer Fire Notes

These larger GTT torches may use separate center fire and outer fire controls. The smaller valve set controls the center fire and the larger valve set controls the outer fire.

• Red valves control fuel.
• Green valves control main oxygen.
• Blue valves control secondary oxygen and flame character.
• The center fire should be running before the outer fire is used.
• Do not evaluate oxygen needs based only on center fire performance if you plan to use the outer fire regularly.

Best Bradshaw Oxygen Setup

Use case	Recommended direction	Notes
Light center fire only use	May be possible with a limited oxygen setup, but needs review	We will ask how you work before recommending equipment.
Regular borosilicate or larger flame work	Multiple concentrators, storage, boosted oxygen, or tanks	One standard concentrator will not deliver full performance.
Production, hollow work, large marbles, or full output	Custom oxygen system or tanked oxygen	Contact Bradshaw Oxygen before purchase.

Questions We Will Ask

• Which model do you have: Phantom, Mirage, Delta, or another GTT torch?
• Do you mainly use the center fire, or do you use the outer fire often?
• Are you making pendants, marbles, hollow work, sculpture, or production pieces?
• Do you currently have any concentrators, tanks, oxygen storage, or a booster?
• Do you need full output performance, or are you running smaller flames?
• How many hours do you typically work at a time?

Common Mistakes

• Assuming a torch can run on one concentrator because it lights on one concentrator.
• Matching by LPM without accounting for PSI.
• Adding a booster without enough oxygen production feeding it.
• Using center fire performance to predict outer fire performance.
• Expecting a small oxygen system to support production work.

Key Takeaways

• One standard concentrator will not run a Phantom, Mirage, or Delta at full output.
• Whether you use the center fire only or the outer fire regularly changes the setup.
• Boosters increase pressure but do not create oxygen.
• Doing borosilicate production, large marbles, hollow work, sculpture, or long sessions? Have Bradshaw Oxygen review your setup.
• Plan a complete oxygen system, not just a concentrator.

Bradshaw Oxygen Recommendation

For the GTT Delta, Mirage, and Phantom, Bradshaw Oxygen recommends a custom review before purchase. Some limited use cases may be possible with a carefully planned concentrator setup, but full performance typically requires more oxygen planning than one standard concentrator can provide.

Call (828) 380-6287 | Text equipment photos to (828) 380-6287

For a custom review, send your exact torch model, details and photos of your current oxygen equipment, whether you mainly use the center fire or regularly use the outer fire, and your typical session length.

View GTT Torch Pressure Chart | Contact Bradshaw Oxygen | Back to GTT Setup Guide