SC23-3 - Miller Smith SC23-3 Propane Gouging Tip Size 3

Technical Overview of the Miller Smith SC23-3 Propane Gouging Tip

The Miller Smith SC23-3 is a specialized heavy-duty gouging tip engineered for precision metal removal using Propane (LP) gas. Part of the SC23 series, this consumable is designed to facilitate the efficient removal of old welds, the excavation of cracks for repair, and the preparation of plate edges through veeing and groove cutting. Unlike standard cutting tips which are designed to sever metal completely, the SC23-3 utilizes a specific bore geometry to direct the oxygen stream in a way that washes molten metal away from the base material, creating a clean, controlled groove.

This specific tip is a Size 3, capable of producing a groove approximately 3/8 inch (10mm) wide and 1/4 inch deep in a single pass. The geometry of the preheat orifices is tuned for propane, which has different combustion characteristics compared to acetylene. Propane requires a specific recessed tip design—often a two-piece construction with a brass inner splined member and a copper outer shell—to anchor the flame effectively and prevent blowout during the high-velocity oxygen discharge required for gouging. The SC23-3 ensures a stable preheat flame that brings the base metal to ignition temperature rapidly, despite propane's lower flame temperature compared to acetylene.

Compatibility is a key feature of the SC23-3. It is manufactured to fit Miller Smith's robust line of heavy-duty equipment, including the DG200 and SC200 series cutting attachments. It also interfaces seamlessly with all SC and DG series hand torches and compatible machine torches. This versatility makes it an essential tool for fabrication shops, shipyards, and maintenance departments where Smith Equipment torches are the standard. The tip's heavy-duty construction ensures a long service life even under the high-heat reflection conditions typical of gouging operations.

Operators utilizing the SC23-3 will appreciate the control it offers. Gouging with oxy-fuel is often preferred over carbon arc gouging in certain environments due to lower noise levels and the absence of carbon deposits. By using propane, shops can also take advantage of lower fuel gas costs. The SC23-3 maximizes these benefits by providing a reliable, high-performance gouging arc that leaves a clean surface requiring minimal secondary grinding before re-welding.