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Harris Products Group Welding Supplies & Equipment

Jason Kossel, SEO & E-commerce Operations Manager at WeldingMart

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Harris Products Group Welding Supplies & Equipment

Harris Products Group has been a cornerstone of the welding and cutting industry since 1899. Founded in Cincinnati, Ohio, Harris built its reputation on precision-engineered gas equipment — regulators, torches, tips, and brazing alloys that professional welders and industrial users could trust on the job site, in the shop, and in the field. Today, as a wholly owned subsidiary of Lincoln Electric, Harris combines over a century of metalworking heritage with the R&D and global distribution muscle of the industry's largest manufacturer. At WeldingMart, we carry the full Harris Products catalog as an authorized dealer — from oxygen-acetylene torch outfits to specialty gas regulators, cutting tips to flux-coated brazing alloys — backed by our 50+ years of welding supply expertise and free shipping on most orders.

Harris Products Group operates across two distinct business segments: gas equipment (regulators, torches, hoses, tips, and cutting outfits) and brazing and soldering alloys (silver, copper-phosphorus, and flux-coated alloys used in HVAC/R, plumbing, aerospace, and industrial fabrication). Both segments share the same engineering philosophy — precision tolerances, durable materials, and designs refined through decades of real-world use. Whether you're a pipefitter cutting 6-inch schedule pipe, an HVAC technician brazing refrigerant lines, or an industrial maintenance tech keeping production lines running, Harris has a product built for your application.

Harris Product Categories

  • Gas Regulators & Flowmeters — Single-stage and two-stage regulators for oxygen, acetylene, argon, CO₂, mixed gas, and specialty gases. Harris regulators feature CGA-compliant inlet connections, robust brass bodies, and precise delivery pressure control for welding, cutting, and purging applications. The Model 3000 and 3100 series are among the most widely used shop regulators in North America.
  • Oxy-Fuel Torch Outfits — Complete cutting and welding outfits including torch handles, mixer heads, cutting attachments, welding tips, and carrying cases. Harris heavy-duty outfits like the 62-5 and 43 Series are built for continuous cutting production; lighter-duty outfits serve maintenance and light fabrication applications.
  • Cutting Tips & Welding Tips — A comprehensive range of replacement tips for Harris torches as well as universal-fit tips compatible with Victor and other major torch brands. Available in one-piece and two-piece design, acetylene and propane/natural gas configurations.
  • Brazing & Soldering Alloys — Silver-bearing alloys (Dynaflow, Stay-Silv), copper-phosphorus alloys (Sil-Fos, Dynaflow), and tin-silver alloys for HVAC/R, plumbing, and industrial brazing. Available in rod, wire, and flux-coated strip form. Harris alloys meet AWS and ASTM filler metal specifications.
  • Specialty Gas Equipment — High-purity regulators for laboratory, semiconductor, and specialty gas applications. Harris specialty regulators cover argon, helium, nitrogen, hydrogen, and mixed specialty gases with stainless steel wetted surfaces for contamination-sensitive processes.
  • Hoses & Fittings — Oxygen and fuel gas hoses in standard and heavy-duty grades, twin-line hoses, and CGA-compliant fittings and flashback arrestors for safe oxy-fuel system assembly.
  • Flux & Chemicals — Stay-Silv White Flux, Harris Black Flux, and specialty fluxes formulated for copper, brass, steel, and stainless steel brazing to prevent oxidation and promote alloy flow.

For process-specific needs, cross-shop our TIG Filler Rods & Welding Rods, Harris Torch Outfits, and Harris Specialty Gas Regulators.

Why Choose Harris Products Group

Harris Products Group is not simply a parts supplier — it's a manufacturer with vertically integrated engineering, metallurgy labs, and production facilities that have been refining gas welding and brazing technology for over 125 years. Here's why professionals choose Harris:

  • Century-Proven Engineering: Harris regulators and torches are designed to military-specification tolerances with machined brass valve bodies, stainless diaphragms, and heat-treated components. The same design philosophy that served pipeline crews in the 1930s is built into every product today.
  • Lincoln Electric Backing: As a Lincoln Electric subsidiary, Harris benefits from world-class quality systems, global supply chain, and the technical support network of the industry's leading welding manufacturer. This means parts availability, warranty support, and engineering expertise that stand-alone brands cannot match.
  • Application-Specific Alloys: Harris's brazing alloy lineup is developed in-house by materials scientists who understand the metallurgy of copper, brass, steel, and exotic alloys. Stay-Silv and Sil-Fos alloys are specified by OEM equipment manufacturers and used in military, aerospace, and commercial refrigeration production worldwide.
  • Regulatory Compliance: All Harris gas equipment meets CGA (Compressed Gas Association) standards, and brazing alloys are certified to AWS A5.8 and ASTM B260 filler metal specifications. Specialty regulators meet relevant SEMI and ASTM purity standards.
  • Parts Availability: Harris maintains active service part inventories for current and legacy product lines, meaning a regulator purchased ten years ago can still be rebuilt with genuine Harris service kits — a significant advantage for industrial maintenance departments.

Best-Selling Harris Products at WeldingMart

These Harris items consistently rank as top performers for WeldingMart customers:

  • Harris 3100211 Flowmeter Argon Regulator — CGA-580 inlet, 0–60 CFH flow range, ideal for MIG and TIG shielding gas control. A staple in professional shops.
  • Harris 62-5 Cutting Outfit — Heavy-duty oxy-acetylene cutting torch with 90° head angle for continuous cutting production. Includes torch handle, cutting attachment, oxygen and acetylene regulators, hoses, and safety goggles.
  • Harris 6290 Series Cutting Tips — High-volume cutting tips in NX (one-piece) and standard two-piece designs, compatible with Harris 62 Series and compatible handles. Available in sizes for 1/8" to 6"+ plate cutting.
  • Harris Stay-Silv 45 Brazing Alloy — 45% silver, cadmium-free, AWS BAg-5 classification. A workhorse alloy for HVAC/R brazing, copper-to-copper and copper-to-brass joints, with excellent flow and gap-filling characteristics.
  • Harris Sil-Fos 15 (Cu-15P) — Self-fluxing copper-phosphorus-silver alloy for copper-to-copper brazing without additional flux. Widely used in refrigeration line fabrication and electrical bus-bar brazing.
  • Harris Specialty Gas Regulators (Model 3 Series) — High-purity two-stage regulators with stainless steel trim, covering argon, nitrogen, helium, hydrogen, and mixed specialty gases for laboratory, purging, and industrial process gas applications.

Harris Certifications & Standards Compliance

Harris Products Group maintains rigorous quality and compliance standards across its product lines:

  • AWS A5.8/A5.8M: Specification for Filler Metals for Brazing and Braze Welding — all Harris brazing alloys are classified under this standard.
  • ASTM B260: Standard Specification for Brazing Filler Metals — Harris alloys carry documented ASTM B260 compliance for industrial procurement requirements.
  • CGA Standards: All Harris regulators and gas equipment comply with Compressed Gas Association (CGA) standards for inlet connections, pressure ratings, and safety requirements. Relevant CGA standards include CGA E-4 (standard for gas pressure regulators) and CGA V-1 (compressed gas cylinder valve outlet and inlet connections).
  • RoHS/REACH Compliance: Harris brazing alloys and flux products are manufactured under environmental compliance programs covering restricted substances in line with RoHS and REACH requirements.
  • UL Listing: Select Harris torch and regulator assemblies carry UL Listing for relevant safety standards in the United States and Canada.
  • ISO 9001: Harris Products Group manufacturing facilities operate under ISO 9001 quality management systems, ensuring consistent product quality and traceability across production runs.

Frequently Asked Questions — Harris Products Group

Is Harris Products Group the same as Lincoln Electric?

Harris Products Group is a wholly owned subsidiary of Lincoln Electric Holdings, Inc. Harris maintains its own brand identity, product lines, engineering, and manufacturing operations, but benefits from Lincoln Electric's global distribution, R&D resources, and quality systems. At WeldingMart, we are an authorized dealer for both Lincoln Electric and Harris Products Group product lines.

What is the difference between Harris Sil-Fos and Stay-Silv brazing alloys?

Harris Sil-Fos alloys are copper-phosphorus-silver alloys that are self-fluxing on copper-to-copper joints (no separate flux needed), making them ideal for refrigeration and plumbing applications. Harris Stay-Silv alloys are silver-bearing brazing alloys that require flux and are used for copper-to-brass, copper-to-steel, and dissimilar metal joints where Sil-Fos is not suitable. Stay-Silv alloys offer higher joint strength and are specified for HVAC/R, aerospace, and industrial fabrication where dissimilar metal brazing is required.

What CGA fitting do I need for a Harris argon regulator?

Argon, nitrogen, helium, and most inert and non-flammable gases use CGA-580 inlet connections on standard regulators. Harris flowmeter regulators for MIG/TIG shielding gas (such as the Harris 3100211) use CGA-580. Oxygen regulators use CGA-540. Acetylene regulators use CGA-510. Always match the regulator inlet to the cylinder valve outlet — using the wrong fitting is a safety hazard and will not physically mate in correctly specified CGA connections.

Are Harris 6290 cutting tips compatible with Victor torches?

Harris 6290 NX series cutting tips are one-piece tips designed for Harris 62 Series cutting attachments and are not cross-compatible with Victor torch bodies without an adapter. However, Harris does offer tips in styles compatible with other major torch manufacturers. Check the tip series designation — Harris two-piece tips in the 1700 and 1800 series are compatible with a range of torch brands. When in doubt, contact WeldingMart to confirm compatibility before ordering.

What flux should I use with Harris brazing alloys on stainless steel?

Harris Black Flux (Harris Stay-Silv Black Flux) is recommended for brazing stainless steel, as it is formulated to handle the chromium oxide scale that forms on stainless surfaces at brazing temperatures. Harris White Flux is suitable for copper, brass, bronze, and mild steel applications but is not effective on stainless steel. Always remove flux residue after brazing, as it is corrosive if left on the joint.

Does WeldingMart sell Harris replacement regulator parts and rebuild kits?

Yes. WeldingMart stocks genuine Harris service parts and rebuild kits for current production Harris regulators and torch equipment. Harris maintains active part inventories for legacy product lines, so older regulators can often be rebuilt rather than replaced. Use the search bar above to find parts by Harris model number or part number, or contact our technical support team for assistance identifying the correct service kit for your equipment.

What is the difference between a single-stage and two-stage Harris regulator?

A single-stage Harris regulator reduces cylinder pressure to working pressure in one step. Delivery pressure will vary slightly as cylinder pressure drops during use — acceptable for general cutting and heating applications. A two-stage regulator uses two sequential reduction chambers to maintain more consistent delivery pressure as the cylinder empties, making it preferable for precision welding, TIG shielding gas, and laboratory applications where stable flow rates matter. Harris offers both single-stage and two-stage configurations across its regulator lines.

How long has Harris Products Group been in business?

Harris Products Group was founded in 1899 in Cincinnati, Ohio — making it one of the oldest continuously operating welding and gas equipment manufacturers in North America. Over 125 years, the company has expanded from gas welding equipment into brazing alloys, soldering materials, and specialty gas equipment, eventually becoming a Lincoln Electric subsidiary while retaining its engineering heritage and product expertise.

Browse all Harris Products at WeldingMart or shop related process hubs: TIG Welding Supplies | Stick Welding Electrodes & Rods | MIG Welders | TIG Welders

Browse the full WeldingMart catalog alongside your Harris order at All Welding Machines & Supplies.

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Harris Products Group Welding Supplies & Equipment Questions & Answers