OGI1227 Features: * Built-in automatic reset check valve prevents reverse flow of gases by cutting off the gases under back pressure * Before disconnection, gas must be shut off at regulators * QC-RHF-A has A-Connection * Gas Type: Fuel Gases, Oxygen * Connection Type: Male/Female * Thread - TPI or Pitch: 9/16 in - 18 * Pressure: 29.00 psi [Max], 145.00 psi [Max] * Price is for 1 Each Color/Finish: * Color codes provide speed and safety