冷冻喉管技术是利用低温冷冻剂 (如液氮 )使喉管中的水或液体固化成可抵受压力的栓塞 ,使在维修或更新喉管工程中无须排走整个系统中的水或液体 ,使工作短时完成。冷冻喉管技术 ,对大部分液体管道维修工程是个好方法 ,直径在 35 0ｍｍ (14″)以下的喉管 ,被安上一个特别设计的 Cryogenic throat technology is the use of cryogenic refrigerant (such as liquid nitrogen) to the throat of the water or liquid curing embolism can withstand the pressure in the repair or replacement of pipework without having to drain the entire system of water or liquid , So that the work is completed shortly. Cryogenic throat technology is a good way to handle most liquid pipeline repairs. Piping up to 35 “(14”) in diameter is housed in a specially designed