Ravands PP head unit has excellent chemical resistance, especially for fertilizers.Setting of dosage can be done precisely by multi turn throttle valve and percentage of opening can be read on the sight glass.Acid treatment of the system can be done without any problem of corrosion of header.Installation friendly and gives long service life.Inletoutlet with slip on flanges for convenient and trouble free connection of opposite flanges.Fusion welded joints.Sizes Available :2(63mm) , 2.5(75mm), 3(90mm).