Leister Triac ST – professional heat gun and plastic welder with adjustable temperature and speed control. Ideal for vinyl flooring, roofing, banners & more. Available in 120V or 230V. (141.228 & 141.227)

Product Name

Leister Triac ST – Professional Heat Gun and Plastic Welder (Models 141.228 & 141.227)

Brief Description

The Leister Triac ST is a robust, lightweight, and versatile professional hot air hand tool, serving as both a heat gun and a plastic welder. It features adjustable temperature and speed control, making it ideal for a wide range of applications involving thermoplastics. As the seventh generation of Leister's TRIAC hot air tools, it combines modern design with Swiss-made quality and a highly robust engine for optimal performance and durability.

Popular Applications & Uses

- Welding of plastic membranes, including flat roof membranes, geomembranes, and industrial fabrics.- Welding vinyl flooring seams.- Shaping, bending, and molding various thermoplastics, pipes, and profiles.- Shrinking heat-shrinkable sleeves, tubes, connectors, and packaging for electrical components.- Repairing plastic parts in automotive applications, such as bumpers, dashboards, and panels.- Sealing and joining large tarps, banners, and billboards.- Drying moist surfaces.- Soldering copper tubing, connectors, and metal foils.- Loosening old bolts, screws, and adhesives.- Removing paint, wallpaper, and vinyl flooring.- Thawing frozen pipes.- Boat construction and repair, including inflatable plastic fabrics.- Aquaculture construction and repair, such as building fish tanks and welding liners.

Industries that Commonly Use It

- Flooring Installer or Manufacturer- Construction/ Building Services (e.g., roofing, civil engineering, foundation waterproofing)- Sign & Display- Tarp, Fabric, Awning Manufacturing- Plastic Fabrication- Automotive Service/Repair- Marine (for boat and aquaculture repair/construction)- Electrical Services or Products- General Manufacturing- PVC Trimboard (for bending and shaping)- Prosumer (for advanced DIY projects)

Special and Unique Features

- **Adjustable Temperature and Speed Control:** Allows for precise heat distribution and welding speed, up to 1292°F (700°C).- **Ergonomic Design:** Features a two-component handle and optimized center of gravity for comfortable and secure grip, even during extended use.- **Lightweight and Portable:** Weighs less than 1 kg (2.2 lbs), enhancing handling and reducing operator fatigue.- **Removable Air Filters:** Easily cleaned two-sided air filters ensure optimal air supply and maximum performance.- **Actively Cooled Protective Tube:** Enhances safety by protecting against burns during operation.- **Carbon Brake:** Protects the heat gun from overloading, contributing to a long service life.- **Versatile with Accessories:** Compatible with over 80 attachment nozzles and various accessories for diverse applications.- **Swiss-Made Quality:** Manufactured with high standards, known for reliability and durability.- **Convertible to Automatic Welder:** Can be combined with accessories like the MINIFLOOR drive unit for small automatic welding tasks.

Key Properties

- **Power:** 1600W (for 230V model)- **Voltage:** Available in 120V or 230V.- **Temperature Range:** Adjustable from 104°F (40°C) to 1292°F (700°C).- **Air Volume:** Up to 8.5 cfm (240 liters/minute) at max temperature.- **Weight:** Approximately 2.18 lbs (less than 1 kg) without power cord.- **Durability:** Highly robust engine and design for long-lasting performance.- **Precision:** Digital temperature settings and controlled airflow for accurate work.

Surface Compatibility

- Thermoplastics (e.g., PVC, TPO, EPDM, PP, PE, ABS, PC, PET, PMMA).- Thermoplastic elastomer and bitumen plates.- Coated fabrics, foils, foams, tiles, and layers.- Vinyl materials.- Wood (for drying, stripping paint, or creating antique finishes).- Metal (for loosening bolts, soldering).- Leather and rubber (for repair).- Glass (for window tinting).

Known backups / known substitutes

- **BAK RiOn Digital:** A comparable handheld hot-air welding gun, often noted for its 3-year warranty.- **Leister TRIAC AT:** An intelligent heat gun with digital display, suited for job sites requiring plastic welding and molding.- **Leister GHIBLI AW:** A robust and ergonomic heat gun for shrinking cables, heating, and shaping plastic parts, including in automotive.- **Leister HOT JET S:** A smaller, lighter heat gun from Leister, ideal for precision plastic welding.- **Leister ELECTRON ST:** A more powerful hot air tool from Leister (3400 Watts).- **WELDY 3400W Handheld Hot Air Plastic Welder:** A powerful air gun for heavy-duty jobs.- **Steinel Heat Gun Kit:** Electronically controlled heat gun with variable heat and airflow levels.- **Polyvance 5700HT Mini Weld Model 7 Airless Plastic Welder:** An airless plastic welder alternative.- **Master Appliance ProHeat Series Plastic Welding Kit:** Another digital plastic welder option.

Comparison Note

The Leister Triac ST is widely regarded as an industry-standard, reliable, and versatile hot air hand tool for professional plastic welding and heating applications. While there are other heat guns and plastic welders on the market, including those from Leister's own product line (e.g., TRIAC AT, GHIBLI AW, HOT JET S, ELECTRON ST) and competitors like BAK and Weldy, the Triac ST is frequently highlighted for its balance of affordability, durability, ergonomic design, and extensive accessory compatibility. Its Swiss-made quality and consistent performance make it a preferred choice for contractors across many industries, often considered a benchmark for manual hot air welding tools.