known apparatuses to inject liquids , in particular plastics into injection moulds have closure rods which remain in the gating when the closure system is opened . in the present apparatus the liquid passage always is completely free when the closure system is opened , because the closure rod can be totally retracted from the liquid passage . this can be accomplished in two ways : either the liquid passage extends in a bended manner or the closure rod has a side view in the configuration of a sector or a circle .