Patent ID: 6997439

Claim:
A liquid filling valve comprising a tubular nozzle having an internal filled liquid passage, an operating rod passing through the nozzle and driven up and down by elevating means, an opening/closing valve formed by a valve element formed on the bottom end of the operating rod and a valve seat formed on the internal surface of the nozzle at its bottom end, a portion of a reducing diameter formed on the internal surface of the nozzle in an upper portion thereof and gradually reducing the cross-sectional area of the filled liquid passage, and a portion of an increasing diameter which is disposed below the portion of a reducing diameter for gradually increasing the cross-sectional area of the filled liquid passage, wherein the operating rod has a diameter which is less than a minimum internal diameter of the portion of a reducing diameter and a plurality of axially extending straightening vanes are formed on the internal surface of the nozzle.