ORS3783 Features: * Internal check valves designed to prevent reverse flow and accidental mixing of oxygen and fuel gases * Torch and regulator models provide downstream and upstream protection * 10"" maximum cutting capacity * For stopping flashbacks by preventing ignition of mixed gases and to protect equipment such as hoses, regulators, and cylinders * Thread - TPI or Pitch: 9/16 in - 18 * Size 1: B-Size * Type: Flashback Arrestor * Price is for 1 Each * Testing and approvals: * UL listed Color/Finish: * Color-coded for gas service to provide added safety