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Oil drain screw for an oil holding tank and oil drain device with the use of the oil drain screw
Oil drain screw for an oil holding tank and oil drain device with the use of the oil drain screw
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机译:使用放油螺钉的储油罐和放油装置的放油螺钉
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摘要
A normally close valve is composed of a valve disc member (20) movably housed in an oil drain through hole (14) of a bolt member (11) fixed to an oil pan (1) and a valve disc (21) of the valve disc member (20) engaged with a valve seat (12a) of the bolt member (11) by means of a spring (30). An adaptor (40) connected to an oil suction hose (463) is used to push the valve disc member (20) to open the normally close valve and to drain an oil under negative pressure, and an elongated, flexible tube (50) connected to the oil suction hose (463) is inserted into the pan (1) from the adaptor (40) through an opening of the valve disc member (20) to drain an oil remaining on a bottom of the oil pan (1).
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