锅炉安全阀的阀芯与阀座间平时处于紧压闭合状态,若不做定期手动排汽试验,久而久之,容易相互粘住。一旦锅炉超压运行,安全阀很难正常发出警报,甚至会导致事故发生。 定期做手动排汽试验,可使安全阀长期处于灵敏可靠状态,避免上述情况发生锅炉安全阀要定期做手动排污试验@张建国 Boiler safety valve between the spool and the valve seat is usually in a tight state closed, if not regular manual exhaust test, over time, easy to stick to each other. Once the boiler over-pressure operation, the safety valve is difficult to issue a normal alarm, and even lead to accidents. Regular manual exhaust test can make the safety valve long-term in a sensitive and reliable state, to avoid the occurrence of the above boiler safety valve to do regular manual sewage test @ Jianguo