GTT Delta Elite Glass Torch

The GTT Delta Elite is Glass Torch Technologies’ big-flame specialist, a powerful two-stage, 57-jet Triple Mix burner built around the Lynx center fire with three rings (50 outer jets) stacked around it. The standard model on GTT’s product page is a four-stud bench torch at GTT’s listed price; GTT also sells a separate Delta Elite hand-torch version with its own controls and pricing, which brings serious surface-mix heat to large assembly and off-mandrel work. GTT also lists a bench version fitted with a variable switch, though that listing does not describe how the switch works.

What the Triple Mix flame gives you

Triple Mix is GTT’s surface-mix technology: fuel and oxygen meet at the face of the torch, which keeps the mixing chamber cool and produces a clean, penetrating flame that drives heat into the core of thick glass. With a Lynx center and three outer rings, the Delta Elite spans a wide range, from a finer center flame up to a broad, powerful one. For the underlying tech see GTT Triple Mix technology and surface mix vs premix torches; for why a penetrating flame suits thick boro, read soaking vs penetrating flame.

The two stages are run separately. GTT’s instruction sheet for the Delta, Mirage and Phantom describes six valves, a red fuel, a green main oxygen and a blue secondary oxygen valve for each stage, and an optional foot pedal that switches the outer fire. The center is lit first: red alone to a yellow flame of about 7 inches, then green, then blue. With the center burning, the outer fire is lit from about 8 inches of yellow, adding green before blue; the sheet says the green valve stays on whenever the outer fire runs, and that running on red and blue alone is for the center fire only. That is orientation, not a procedure: the sheet’s own adjustment cautions apply, and GTT’s instructions for your torch take precedence over any summary here.

Bench torch or hand torch

The Delta Elite comes both ways, as separate products on GTT’s site: the 57-jet torch (a 7-jet Lynx center plus 50 jets in three outer rings) on a four-stud bench base, and a hand torch. The hand torch suits assembly, off-mandrel work and spot heating on large pieces, bringing the flame to a join instead of the work to a bench burner. On GTT’s switched hand torch, an on/off switch on the handle changes between the inner and outer fire; the version without it keeps adjustable valves, and GTT offers the switch as a later upgrade. GTT sells five versions: the 4-stud bench torch at $2,575, a compressed-air bench version, a bench torch with a variable switch, and a hand torch with or without an on/off switch. The version picker at the top of the Specs section lists each one with GTT’s own name, its price as GTT’s pages showed it on 2026-10-06, and what GTT’s listing says about it; prices change, so confirm with GTT.

The bench torch ships with hoses (1 foot of 3/16 inch hose on each stud), screened adapters for 1/4 inch ID grade T hose, the base, instructions and a cleaning kit; GTT’s store listing also names a DVD. For oxygen, GTT describes running the center fire on a concentrator and the outer fire on tanked oxygen. Custom color adds $150. GTT gives no delivery date and notes that material availability can delay torches. If you’re deciding between formats, see bench vs hand torch.

Who the Delta Elite is for

This is an advanced tool for large work and assembly in borosilicate. It rewards a maker who already knows how they want to work and needs a powerful, mobile flame to do it. It is emphatically not a first torch, and the oxygen appetite and price reflect that. GTT’s bench page gives no numeric work capacity; its hand-torch page rates the Delta hand torch for solid borosilicate up to 2.5 inches, the same figure it gives the Mirage hand torch.

Glass, fuel, and oxygen

The Delta Elite burns propane or natural gas with oxygen and is built for boro. GTT’s Flow Rate Chart, measured on propane at the largest usable flame, lists it at 10 psi fuel and 35 psi oxygen, and GTT’s instruction sheet for the Delta, Mirage and Phantom gives the same two settings. The sheet also names a minimum of 5 psi fuel and 10 psi oxygen and says the torch gives reduced results there, which is worth knowing before you size a regulator or an oxygen line for it. GTT notes natural gas burns roughly 2.5 times the propane volume, and GTT torches on natural gas covers house lines. As a high-output, multi-ring torch, its oxygen demand is substantial, realistically tanked oxygen or multiple concentrators rather than a single small unit. Our catalog carries a ~30 LPM reference converted from GTT’s flow table for the largest usable flame; size your oxygen to your work and confirm with GTT. Start with how many LPM does my torch need.

Where it sits in the GTT lineup

The Delta Elite sits at the top of GTT’s two-stage range, and its hand-torch version is the off-bench counterpart to the big bench burners. It shares the Lynx center with the Phantom and Mirage, so the flame behavior is familiar even though the form factor and power are not. GTT’s smaller Sidewinder covers lighter assembly and spot heating; the Delta Elite is the one you reach for when the work is large.

Before you buy

Budget for the whole system, not just the torch: an oxygen supply sized to a high-output torch, the correct propane or natural-gas regulator, flashback protection matched to your torch and gas supply, didymium or boro-rated eyewear matched to your glass, and serious ventilation. New to plumbing a torch this size? Start with the fittings, hoses & connectors guide and the glass torch safety setup guide. On the torch itself, GTT’s servicing page states a one-year warranty against factory defects that does not cover damage from improper use, misuse, or neglected maintenance; if you’re buying used, work through the used GTT torch checklist.

Editor’s note: spec details reflect GTT’s own materials. The catalog price is GTT’s listed price for the standard four-stud bench configuration, and the oxygen figure is converted from GTT’s flow table for the largest usable flame; the hand-torch version is priced separately, so confirm your exact configuration with GTT before purchasing.