The safety valve is used to ensure safety, but sometimes improper use will lead to the leakage of the safety valve. Here we will introduce the causes of several safety valve leakage faults and the methods to repair the fault.
Cause one: The sealing surface is damaged. At this time, it is necessary to check the damage of the sealing surface, and then to repair the damage after grinding or turning and then grinding, to ensure the flatness of the sealing surface after the repair, and the smoothness of the sealing surface can not be less than 10.
Cause two: Improper installation. It is necessary to reinstall the safety valve and check the additional load to remove the pipe.
Reason 3: Caused by high temperatures. When choosing a safety valve, a suitable safety valve should be selected according to the use environment of different temperatures. In the case of high temperature, a heat-relief valve or other special structure safety valve that can be used in high-temperature medium should be selected, and appropriate heat insulation protection measures must be taken. .
Cause four: The opening pressure is too close to the working pressure of the equipment. Reposition the spring within the pressure range of the spring. If the spring pressure range is exceeded, replace the spring.
Cause five: Entrapment of dirt on the sealing surface. Need to clear the dirt on the sealing surface, first use a wrench or other method to open the valve of the safety valve, remove the dirt, you can blow off the dirt, if you can not blow away, we must open the valve for cleaning.
Cause one: The sealing surface is damaged. At this time, it is necessary to check the damage of the sealing surface, and then to repair the damage after grinding or turning and then grinding, to ensure the flatness of the sealing surface after the repair, and the smoothness of the sealing surface can not be less than 10.
Cause two: Improper installation. It is necessary to reinstall the safety valve and check the additional load to remove the pipe.
Reason 3: Caused by high temperatures. When choosing a safety valve, a suitable safety valve should be selected according to the use environment of different temperatures. In the case of high temperature, a heat-relief valve or other special structure safety valve that can be used in high-temperature medium should be selected, and appropriate heat insulation protection measures must be taken. .
Cause four: The opening pressure is too close to the working pressure of the equipment. Reposition the spring within the pressure range of the spring. If the spring pressure range is exceeded, replace the spring.
Cause five: Entrapment of dirt on the sealing surface. Need to clear the dirt on the sealing surface, first use a wrench or other method to open the valve of the safety valve, remove the dirt, you can blow off the dirt, if you can not blow away, we must open the valve for cleaning.
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