GTT Viper Glass Torch

The GTT Viper is one of Glass Torch Technologies’ largest burners, a three-stage, 200-jet Triple Mix production torch with the widest heat range in the line. It’s built around a 7-jet Lynx center and can be configured with either a Mirage middle (7 + 33 + 160 outer) or a Delta Elite middle (7 + 50 + 143 outer). Either way it spans from a Lynx pinpoint all the way up to a furnace-size flame, a single torch that goes from fine detail to moving large masses of glass.

What the three-stage Triple Mix flame gives you

Triple Mix is GTT’s surface-mix technology: fuel and oxygen meet at the face of the torch, keeping the mixing chamber cool and giving a clean, penetrating flame that drives heat into the core of thick glass rather than just washing the surface. With 200 jets across three stages, the Viper covers an extraordinary range, the same fine center flame you’d find on a Lynx, scaled up to furnace-size output. For the underlying tech see GTT Triple Mix technology and surface mix vs premix torches; for why penetration matters on heavy boro, read soaking vs penetrating flame.

Who the Viper is for

The Viper suits advanced makers and high-volume production studios that genuinely need furnace-size heat and want the flexibility of a fine center flame in the same torch. Its oxygen appetite is at the extreme end of the line, which makes it a tool for serious production rather than detail or soft-glass beadwork.

Glass, fuel, and oxygen

The Viper burns propane or natural gas with oxygen. GTT’s Flow Rate Chart, measured on propane at the largest usable flame, lists it at 20 psi fuel and 80 psi oxygen; GTT notes natural gas burns roughly 2.5 times the propane volume, and GTT torches on natural gas covers house lines. Its oxygen demand is among the highest GTT makes, realistically a large tanked-oxygen supply rather than concentrators. GTT doesn’t publish the Viper’s exact LPM, so size your oxygen around the work you actually do and confirm with GTT before committing. Start with how many LPM does my torch need and plan your supply with oxygen concentrator vs tanks.

Where it sits in the GTT lineup

The Viper sits at the furnace-size top of GTT’s range, alongside the Cobra, above the three-stage Ninja, Samurai, and Delta Mag. It’s built on the same Lynx center as everything else, so even at 200 jets the flame behavior is familiar, the Viper simply wraps the largest fires in the line around a core you already know.

What GTT sells

GTT sells the Viper with a Mirage or a Delta Elite middle fire, both at $7,000, and with its compressed-air option, where GTT’s own pages show two different prices. 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.

GTT’s three-stage instruction sheet describes nine valves (red fuel, green main oxygen and blue secondary oxygen for each of the three fires) and sets fuel at 20 psi and oxygen at 80 psi, matching the Flow Rate Chart. The torch sits on 6 studs with rack-and-pinion adjustment on a powder-coated base. It ships with 2 feet of 3/16 inch hose and screened adapters for 1/4 inch ID grade T hose, with 2 feet of 1/4 inch grade T hose on the outer studs, plus the base, instructions and a cleaning kit, and a DVD on GTT’s store listing. Custom color adds $200. For the air option, GTT specifies clean, dry air regulated to 60 psi or lower. GTT gives no delivery date and notes that material availability can delay torches.

Before you buy

Budget for the whole system, not just the torch: an oxygen supply sized to a furnace-class 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. GTT doesn’t publish the Viper’s exact oxygen flow (LPM) and current configuration details should be confirmed with GTT before purchasing.