Quick ocnnector assembly & disassembly operations method: 1.Yongheng quick connector is made up of body,in O-ring,out O-ring,spacer ring,securing ring and locking spring. 2.Insert the mating tube end piece to connector,due to the function of flexible locking spring and snap fastener,they are joined together,then pull back to assure a complete connection so that quick connector coupling can work well.