GTT Viper: a three-stage, 200-jet Triple Mix torch from pinpoint to furnace-size
GTT Viper · Bench torch · Surface mix
The GTT Viper is a three-stage, 200-jet Triple Mix (surface-mix) production torch, a 7-jet Lynx center with a Mirage or Delta Elite middle and a large outer fire, that ranges from a Lynx pinpoint all the way up to a furnace-size flame.
Specs
- Mix type
- Surface mix
- Mount
- Bench
- Oxygen (estimate)
- n/a
- Fuel
- Propane, Natural gas
- Skill level
- Advanced
- Glass
- Soft, Boro
- Best for
- Production, Large boro, Furnace-size work
- Price
- ~$7,000 (reference)
- Jets
- 200
- Stages
- 3
Manufacturer page
Treat the oxygen figure as a rough sizing estimate, not a specification. Depending on the model it may be manufacturer full-flame consumption, a converted flow figure, or a documented estimate, and delivered pressure and purity matter as much as flow. What actually drives a torch choice is the glass, the work, and the flame, so size your oxygen supply after you pick the torch. Prices may be manufacturer list prices or observed dealer references. Use the evidence label and sources below, then confirm the exact configuration before buying.
Overview
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 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.
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.
Fit and tradeoffs
Best for: Advanced makers and high-volume production studios needing the widest possible heat range in one torch, from a fine center flame to a furnace-size soaking flame.
Not for: Beginners, detail-only work, or anyone on a small single concentrator, this is among GTT's most oxygen-hungry burners.
Pros
- + Three-stage Triple Mix with 200 total jets
- + Spans a Lynx pinpoint all the way up to a furnace-size flame
- + Configurable middle stage: Mirage (33) or Delta Elite (50)
- + Penetrating surface-mix flame that drives heat into the core of heavy glass
- + Fine Lynx center flame still available for detail
Cons
- − Extreme oxygen appetite, plan a large tank or multi-concentrator supply
- − Pro price band; a major production investment
- − Built for the largest boro work, not soft-glass beads or fine detail alone
- − Some oxygen figures are converted from CFH and prices vary by configuration; confirm the exact setup with GTT
Flame notes
3-stage Triple Mix, 200 jets total. With Mirage middle: 7-jet Lynx center + 33 middle + 160 outer; with Delta Elite middle: 7 center + 50 middle + 143 outer. From a Lynx pinpoint up to a furnace-size flame.
Maker
Glass Torch Technologies
USA
Focus: Boro, Production, Pipe, Soft
Tioga, Pennsylvania maker of standard surface-mix, patented Triple Mix, and 4-Way Mix glassworking torches. GTT says it machines, builds, and tests its torches by hand.
Related reading
- GTT Triple Mix Technology: How Surface-Mix and the Lynx Center Fire Work
- Soaking vs Penetrating Flame: How Torch Heat Actually Works
- Surface Mix vs Premix Torches: Flame, Noise, and Cost
- How Many LPM Does My Torch Need? Sizing Oxygen for Your Glass Torch
- Oxygen Concentrator vs Tanks for Lampworking: Which Supply Should You Run?
Compared with
Head-to-head guides that put the Viper against other torches.
FAQ
- What is the GTT Viper built for?
- The widest heat range GTT offers in one torch, furnace-size production work plus a fine center flame for detail. It's a three-stage, 200-jet Triple Mix torch that ranges from a Lynx pinpoint up to a furnace-size flame.
- How are the Viper's stages configured?
- Either way it's a 7-jet Lynx center plus a middle and outer fire totaling 200 jets. With a Mirage middle that's 7 center + 33 middle + 160 outer; with a Delta Elite middle it's 7 center + 50 middle + 143 outer.
- Can the Viper run on an oxygen concentrator?
- No, not realistically, it's among GTT's most oxygen-hungry torches, far beyond a single small concentrator. GTT doesn't publish exact LPM, so plan around a large tanked-oxygen or multi-concentrator supply and confirm with GTT.
- Is the Viper a good first torch?
- No, it's an advanced, furnace-class production burner. Beginners should start with a single-stage GTT like the Bobcat or Cheetah and a much smaller oxygen supply.
- Soft glass or boro?
- Both are listed, but the Viper is a furnace-size large-boro and production torch; soft-glass beadwork is far better matched to GTT's smaller torches.