This Western Enterprises oxygen flashback arrestor provides essential torch-mounted protection against dangerous flashbacks and reverse gas flow in oxyfuel cutting and welding operations. Designed specifically for oxygen service with B-size fitting and 9/16"-18 thread, this arrestor prevents ignition of mixed gases and protects downstream equipment including hoses, regulators, and cylinders. The internal check valve system prevents reverse flow and accidental mixing of oxygen and fuel gases, while the color-coded design enhances safety identification during gas service operations. At just 0.11 lb, this compact arrestor integrates seamlessly into torch setups without adding excessive weight or bulk. Gas Type: Oxygen service Thread: 9/16"-18 TPI Fitting Size: B-size Style: Torch-mounted Weight: 0.11 lb Maximum Cutting Capacity: 10 inches Color-coded for gas identification Internal check valve prevents reverse flow Prevents accidental gas mixing Essential safety equipment for oxyfuel cutting operations up to 10-inch capacity, this arrestor should be installed between the torch and oxygen supply line. The B-size fitting ensures compatibility with standard oxygen regulators and torch connections commonly used in welding and cutting applications.