These pumps are lightweight,compact and easy to use forpumping a wide range of liquids.As they are air operated they are ideal for pumping volatile or inflammable liquids in hazardous areas.Self-priming from a dry start these pumps are ideal insituations where liquid has to be pulled from a container. The pumps can also run dry.The robust construction reduces maintenance to aminimum. > Pump ModelNDP-5-FPTNDP-5-FVTNDP-5-FATNDP-5-FST Port DimensionsLiquid Inlet > 1 / > 4 ԔBSP > 1 / > 4 BSP > 1 / > 4 ԔBSPT > 1 / > 4 BSPTLiquid Outlet > 1 / > 4 ԔBSP > 1 / > 4 BSP > 1 / > 4 ԔBSPT > 1 / > 4 BSPTAir Inlet > 1 / > 4 ԔBSPT (with ball valve)Air ExhaustRc 3/8" Discharge Volume per Cycle20 cc Air Pressure Range0.2 0.5 MPa0.2 ֖ 0.7 MPa Maximum Discharge Pressure0.5 MPa0.7 MPa Maximum Solid SizeLess than 0.2 mm Weight1.4 Kgs1.45 Kgs1.5 Kgs3.0 Kgs Wetted MaterialsPolypropyleneKynarAluminiumStainless Steel(PPG)(PVDF)(AC4C-T6)(SCS-14)Diaphragm MaterialsPTFEPTFEPTFEPTFE > Performance curves and test data are based on fresh water at ambient temperature.Discharge volume and headvary according to viscosity,specific gravity and other physical properties of the fluid/paste being pumped. To achieve the best diaphragm life and the most efficient air consumption,select a pump 1.5 times the required capacity. >