| 摘要 |
PURPOSE: A safety valve for a lubricator with an oil supply path and an oil recovery path is provided to properly control the threshold level of a tensile force required for breaking an oil supply hose. CONSTITUTION: A safety valve for a lubricator comprises a first coupler(110), a female valve(120), an oil vapor control valve(130), a second coupler(150), and a male valve(170). The first coupler in which an oil supply path(112) is formed lengthwise comprises a first oil control surface(115) and a protruding end equipped with a sealing part. The female valve is inserted inside the first coupler and comprises a first stopper, a first valve sealing which opens and closes the oil supply path, and a valve seating surface(125). The oil vapor control valve is elastically pressed to one side of the female valve. An oil guide path(152) connecting to the oil supply path is formed inside the first coupler. The male valve comprises a second stopper and a second valve sealing part which opens and closes the oil guide path.
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