Note for Readers: This post may contain affiliate links. If you purchase through them, we may earn a small commission at no cost to you. Thank you for supporting our site.
Introduction
The Weldtec Speedway SW-320-25DX Deluxe Water-Cooled TIG Torch Kit, 25’, Braided is a professional-grade TIG torch engineered for high-performance gas tungsten arc welding (GTAW). Built for demanding applications, this 320-amp water-cooled torch ensures excellent thermal management during extended welding at high amperages.
The 25-foot braided cable delivers greater maneuverability and durability compared to standard rubber leads, making this kit a favorite for welders who need precision, comfort, and consistent performance.
This kit is popular with:
- Structural welders
- Aerospace and automotive fabricators
- Welding instructors and advanced students
- Engineers and metal artists working with stainless steel, titanium, and aluminum
If you perform long welding passes, work on heat-sensitive materials, or weld in tight positions, the SW-320-25DX offers the cooling, flexibility, and reliability to get the job done.
Types / Variants / Models
Weldtec offers multiple Speedway torch kits designed for different amperage ranges and cooling methods:
- SW-320-25DX (this model):
- Water-cooled, 320 amps, 25’ braided cable
- Ideal for heavy-duty industrial TIG welding
- SW-225-25DX:
- Similar design but rated for 225 amps
- Suited for mid-range applications and lighter gauges
- Air-Cooled Speedway Torches:
- Up to ~150 amps
- Practical for fieldwork or short-duration jobs without water cooling
- Rubber Hoses:
- Heavier and less flexible than braided lines
- More abrasion-resistant in rough shop environments
Choose the SW-320-25DX if you need high heat input, long duty cycles, and superior cooling when working with specialty alloys.
Key Features and Specifications
The SW-320-25DX Deluxe kit combines durability and ergonomic design for professional welders.
- Amperage Rating
- 320A DC, 250A AC @ 100% duty cycle
- Suitable for thick materials, structural welding, and long arcs without overheating
- Cooling System
- Water-cooled torch head and hoses
- Runs cooler, extending service life
- Note: Some kits include quick-connects, but these may be optional depending on supplier
- Cable Assembly
- 25’ braided nylon composite lead
- Lightweight, flexible, and kink-resistant — excellent for bench or out-of-position welding
- Torch Head
- Speedway design promotes smoother shielding gas flow and easier arc starts
- Compatible with standard 3-series (WP-20 style) consumables
- Handle Design
- Slim knurled body provides grip and control
- Reduces fatigue over long sessions
- Connections
- Standard 5/8″-18 RH fitting for gas
- Power adapter included for most TIG power sources (check fitting size for your machine)
- Manufacturing Standards
- Made in the USA
- Built to meet industry standards for welding reliability and safety
Usage & Compatibility
This torch is designed specifically for GTAW (TIG) welding. It’s not interchangeable with SMAW, GMAW, or FCAW processes.
Compatibility Highlights:
- Works with most AC/DC TIG machines rated 300A+ with water coolers
- Fits many Miller, Lincoln, ESAB, and Everlast units
- Adapter fittings may be required, depending on your power source and cooler connections
User Experience Notes:
- Runs noticeably cooler with a quality water cooler (e.g., Coolmate, Dynaflux)
- Braided cable flexibility reduces fatigue in fabrication shops
- Arc starts are stable thanks to Speedway’s internal gas flow design
Common Applications
The SW-320-25DX is trusted across a variety of industries:
- Aerospace fabrication & repair – precision TIG on titanium and stainless
- Automotive fabrication – chromoly roll cages, stainless exhausts, aluminum intercoolers
- Manufacturing & metal art – clean welds with minimal post-processing
- Sanitary stainless piping – consistent arcs for food and pharmaceutical work
- Education & certification programs – teach proper technique on pro-grade gear
Tips & Best Practices
Setup:
- Use distilled water or approved coolant to prevent corrosion
- Route coolant return lines above torch level to prevent backflow
- Secure braided cable with strain reliefs to avoid abrasion
Usage:
- Match tungsten type to job (e.g., 2% lanthanated for general use)
- Adjust the AC balance carefully when welding aluminum
Maintenance:
- Inspect the torch neck, handle, and hoses regularly for wear
- Clean the gas lens and collet body to maintain smooth arc initiation
Troubleshooting:
- If overheating, check the coolant level and purge air from the system
- If the arc is unstable, replace worn consumables and check ground clamp
Conclusion
The Weldtec Speedway SW-320-25DX Deluxe Water-Cooled TIG Torch Kit delivers reliable performance, superior cooling, and operator comfort for demanding TIG applications. With its flexible braided cable, ergonomic design, and professional build quality, it’s a smart investment for welders who need precision and durability.
Whether you’re fabricating aerospace components, tuning a chromoly chassis, or teaching advanced GTAW techniques, the SW-320-25DX stands out as a dependable, professional-grade torch kit.
- Maximum Amperage Capacity (ac-dcsp) 320 AMPS
- Weight (Torch Body and Handle) 3.0 oz (84 gm)
- Tungsten Size Capacity .020″ – 5/32″ (0.5 – 4,0mm)
- Maximum Tungsten Length 7″ (178mm)
- Cooling Requirements 1 QT./min (.946 L/min) @ 50 PSI
Last update on 2025-10-03 / Affiliate links / Images from Amazon Product Advertising API
Leave a Reply