Industrial ATTC 3690P-1 Gas Torch Cutting Tip

ATTC 3690P-1 Cutting Tip is a replacement acetylene preheat cutting tip from American Torch Tip for oxy-fuel cutting, part of the 3690-P family. This size-1 tip fits Harris LP/NG Light Mini 3690P-1 assemblies and other ATTC-compatible cutting-torch handles, making it a direct substitute for the Harris 3690P-1 tip and a common choice in shops using Harris or ATTC consumables. It is designed specifically for acetylene preheat cutting, delivering a controlled preheat flame before engaging cutting oxygen to sever through metal. For proper operation, the recommended operating range is approximately 25–45 psi of cutting oxygen and about 5 psi of acetylene, with a typical cut thickness range from 1/2 inch to 1 inch depending on material and torch configuration. The 3690-P series supports multiple fuels, including acetylene and LPG (Oxy/LPG), and ATTC catalogs document 3690P tips as a family item designed for use in conventional oxy-fuel cutting setups.