GTT Viper: a three-stage, 200-jet Triple Mix torch from pinpoint to furnace-size

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. 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.

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 arrestors on both lines, didymium eyewear, and serious ventilation. New to plumbing a torch this size? Start with the fittings, hoses & connectors guide and the glass torch safety setup guide.

Editor’s note: spec details reflect GTT’s own materials. GTT doesn’t publish the Viper’s exact oxygen flow (LPM) or current pricing, so confirm those specifics with GTT before purchasing.