| 摘要 |
The subject valve fits into the drain fitting of crankcases and is operable by tension applied to a cable attached to it at one end. The other end of the cable is made readily accessible by attachment to a fitting attached at a convenient place to the vehicle of which the crankcase is a part. The valve is a poppet valve with a stem and is held closed by a conical compression spring. The operating cable is engaged in the valve fitting and poppet stem such that tension in the cable lifts the poppet off the valve seat to open the valve. The valve automatically closes when the tension on the cable is relieved.
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