... mixtured with gas or air. The leading featrues of 2W series twin screw pump1. Deliver arious medium smoothly without and ... oily sludge in cabin bottom, also as pressure boost pump and ballast pump.chemical industry: transfer various acid, alkali and salt ... glycerine paraffin wax, ans cosmetics emulsion, also as bottle filling pump.paint industry: deliver printing ink, color, various paint and coating ...