liquid transfer pump 1. for chemical liquid, oil, heavy visocosity liquid ... 1, 5:1 etc Specificationsliquid transfer pump 1. for chemical liquid, oil, heavy visocosity liquid, PU ... pump, Polyurethanes liquid transfer pumpair operated transfer pump for chemical liquid, oil, heavy visocosity liquid, PU ... widely used in paint, oil, PU spraying, thermal insulating layer making etc* ratio: 10:1 5:1, 3: ...