WH200A - Smith WH200A Heavy Duty Oxy-Fuel Torch Handle

Technical Overview of the Smith WH200A Heavy Duty Torch Handle

The Smith WH200A Heavy Duty Torch Handle is an industrial-grade component designed for high-performance oxy-fuel cutting, welding, brazing, and heating applications. Engineered to meet the rigorous demands of heavy fabrication and construction environments, this handle features a robust "tube-within-a-tube" construction. This design philosophy not only enhances the structural integrity of the unit, preventing bending or deformation under stress, but also optimizes the weight-to-strength ratio, reducing operator fatigue during prolonged use. The handle is capable of supporting high gas flow rates, which is essential for driving large heating tips and achieving a cutting capacity of up to 8 inches (203 mm) when paired with the appropriate SC200 series cutting attachments.

A critical technical feature of the WH200A is its silver-brazed joints. Unlike soft-soldered connections found in lesser equipment, silver brazing provides a metallurgical bond that offers superior resistance to heat and mechanical shock, ensuring leak-free performance and safety. The gas control system utilizes stainless steel ball-type needle valves. These valves are engineered for precision, allowing for minute adjustments to the flame profile while ensuring positive, chatter-free seating. This precise control is vital for applications requiring specific flame chemistries, such as neutral, oxidizing, or carburizing flames.

Maintenance and longevity are central to the WH200A's design. The inlet connections are standard "B" size (9/16"-18) and are replaceable, meaning that thread damage at the hose connection does not require replacing the entire handle. Furthermore, the internal threads for tip and attachment connection are recessed and protected, safeguarding them from impact damage if the torch is dropped. The handle comes equipped with replaceable reverse flow check valves and filters, adding a layer of safety against backflow and contamination. Compatible with all industrial fuel gases—including acetylene, propane, propylene, and natural gas—the WH200A serves as a versatile platform for a wide array of Smith tips and attachments, including the SC, ST, and SW series.