SW205 - Smith SW205 1/8-Inch Heavy Duty Acetylene Welding Tip for WH200 Handles

Technical Overview of the Smith SW205 Heavy Duty Welding Tip

The Smith SW205 is a precision-engineered component within the SW200 Series, designed to facilitate heavy-duty welding and brazing operations using acetylene gas. This tip is characterized by its 1/8-inch (3.2 mm) orifice size, making it suitable for substantial material thicknesses where deep heat penetration and consistent bead formation are required. A defining technical feature of this model is its swaged construction. Unlike standard drilled tips, the swaged design streamlines the internal gas path, compressing the flow to produce a highly concentrated heat source while maintaining laminar flow characteristics. This results in what Smith Equipment designates as a "Soft Flame," a stable cone that minimizes the blowing effect on the molten puddle, thereby reducing oxidation and porosity in the finished weld.

Material selection for the SW205 prioritizes thermal management. The tip is manufactured from heavy-wall copper, a specification chosen for its superior thermal conductivity and mass. In oxy-fuel applications, particularly in corners or confined spaces, reflected heat can rapidly degrade standard tips. The heavy-wall design of the SW205 absorbs and dissipates this heat more efficiently, permitting cooler operation and significantly extending the service life of the consumable. Furthermore, the tip features a long straight-away section before the orifice. This geometric consideration allows maintenance personnel to reface the tip if the end becomes damaged or bell-mouthed from abuse, further extending the lifecycle of the unit.

Operational efficiency is enhanced by Smith's proprietary Slip-In tip design. The SW205 connects to compatible torch handles—specifically the WH200, SW1, SW1B, and SW2 models—via a hand-tightened mechanism. This eliminates the need for wrenches during tip changes, reducing downtime to approximately six seconds. The sealing mechanism relies on precision-machined surfaces and O-rings rather than metal-to-metal torque, ensuring a leak-proof seal that is resistant to wear over repeated cycles. While primarily optimized for acetylene, the SW205 maintains versatility; it may be employed for brazing applications utilizing propylene-based fuel gases or Liquid Air Fuel-Gas, provided the operator selects a tip size two increments larger than the recommended acetylene size for the equivalent thermal output.