Swaged Nozzle No 7 Gas Cutting

The Swaged Nozzle No. 7 is a professional-grade gas welding tip engineered for the South African automotive, HVAC, and light engineering sectors. Unlike two-piece cutting nozzles, the swaged nozzle features a single-piece, tapered copper construction designed for use with a standard Oxy-Acetylene Welding Torch (Model DH or similar). The "No. 7" designation refers to the orifice size, specifically calibrated to produce a focused, high-temperature flame ideal for welding steel thicknesses ranging from 4.0mm to 5.0mm, or for heavy-duty silver brazing on large-diameter copper piping.

Key Performance Features

• One-Piece Swaged Copper Design: Manufactured from high-purity, cold-formed copper to ensure a perfectly smooth internal gas path, resulting in a stable, laminar flame with no "pop-outs."
• Precision-Tapered Orifice: The "Swaged" profile concentrates the mixed gas into a sharp, needle-like inner cone, providing the intense localized heat necessary for deep-penetration welding and brazing.
• Superior Heat Dissipation: The solid copper construction rapidly draws heat away from the tip, preventing backfire and ensuring the nozzle remains dimensionally stable during prolonged fabrication.
• Standard DH-Style Threading: Fully compatible with standard lightweight and medium-duty welding mixers used across South Africa in professional workshops and site maintenance.

Ideal Applications

• Automotive Body & Chassis Repair: The industry standard for welding thin-to-medium gauge steel panels, exhaust components, and classic car restorations.
• Industrial HVAC & Refrigeration: Perfect for high-capacity silver brazing on thick-walled copper manifolds and commercial cooling coils.
• Light Agricultural Fabrication: Ideal for welding security gates, small-scale trailer frames, and repairing thin-walled irrigation piping.
• Artistic Metalwork & Prototyping: A reliable primary tool for precision gas welding of intricate steel sculptures and custom furniture frames.

Product Benefits

• Exceptional Flame Control: The No. 7 orifice allows for a highly adjustable flame—from a soft "brazing" heat to a sharp "welding" cone—giving the operator total control over the weld pool.
• Clean, Dross-Free Joints: By providing a perfectly mixed gas stream, this nozzle minimizes oxidation and soot buildup, resulting in a cleaner weld bead that requires less post-work grinding.
• Rugged Workshop Durability: The robust copper tip is resistant to mechanical impact and "spatter-clogging," offering a long service life in busy production environments.

Pro Tip: To maintain the precision of your No. 7 nozzle, always use a Nozzle Cleaner of the correct size. Never "tap" the nozzle on the workpiece to remove spatter, as this can deform the swaged tip and ruin the flame geometry. For the best weld quality on 5mm plate, ensure your Oxygen and Acetylene pressures are balanced to produce a neutral flame—a carbonizing flame will make the weld brittle, while an oxidizing flame will cause excessive sparking and "pinholes."