在自动喷水灭火系统的调试开通和质量检验中 ,曾发生过止回阀破裂的事故 ,仅 1999年 10月和 11月就发生了两次。因此 ,影响了检验工作的顺利进行 ,更影响着系统及时投入运行。止回阀是自动喷水灭火系统中重要的部件 ,由于其材质和构造不同 ,工作压力和水锤大小也不一样。水锤越 In the commissioning and quality inspection of the automatic sprinkler system, there was an accident of rupture of the check valve, which occurred only twice in October and November 1999. Therefore, the smooth progress of the inspection work is affected, and it also affects the timely operation of the system. The check valve is an important part of the sprinkler system. Due to its different materials and structures, the working pressure and water hammer are not the same size. Water hammer