Safety valve is a special branch of the valve family, its particularity is because different from other valves only play the role of switch, more important is to protect the safety of equipment.Safety valve is a special valve in which the opening and closing parts are normally closed under the action of external forces. When the pressure of the medium in the equipment or pipeline exceeds the specified value, the pressure of the medium in the pipeline or equipment is prevented from exceeding the specified value by discharging the medium outside the system.Safety valve belongs to the automatic valve class, mainly used in boilers, pressure vessels and pipelines, control the pressure does not exceed the specified value, to personal safety and equipment operation plays an important role in protection.Please note that the relief valve must be pressure tested before use.
Safety valve is mainly widely used in: steam boilers, liquefied petroleum gas truck or liquefied petroleum gas railway tank car, oil Wells, steam power generation equipment of high pressure bypass, pressure pipeline, pressure vessels, etc.Safety valve is generally divided into spring type safety valve and lever type safety valve, pulse type safety valve according to the structure form, among which spring type safety valve is the most common application;According to the connection mode is divided into threaded safety valve and flange safety valve.Safety valve diameter is generally not large, commonly used in DN15mm-DN80mm, more than 150mm is generally known as a large diameter safety valve.