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FLOW Product Data Sheet Yamada Air Operated Double DIAPHRAGM PUMPS These pumps are lightweight, compact and easy to use for pumping 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 in situations where liquid has to be pulled from a container. The pumps can also run dry. The robust construction reduces maintenance to a minimum. Model NDP-5 - 1/4” Maximum Capacity 10 L/min SPECIFICATION Pump Model Port Dimensions Liquid Inlet Liquid Outlet Air Inlet Air Exhaust Discharge Volume per Cycle Air Pressure Range Maximum Discharge Pressure Maximum Solid Size Weight Wetted Materials Diaphragm Materials NDP-5-FVT NDP-5-FAT NDP-5-FST 1/4” BSP 1/4” BSPT 1/4” BSPT 1/4” BSP 1/4” BSPT 1/4” BSPT 1/4” BSPT (with ball valve) Rc 3/8" 20 cc 0.2-0.5 MPa 0.2-0.7 MPa 0.5 MPa 0.7 MPa Less than 0.2 mm 1.4 Kgs 1.45 Kgs 1.5 Kgs 3.0 Kgs Polypropylene Kynar® Aluminium Stainless Steel (PPG) (PVDF) (AC4C-T6) (SCS-14) PTFE PTFE PTFE PTFE DIMENSIONS Performance Curves ● Performance curves and test data are based on fresh water at ambient temperature. Discharge volume and head vary 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.

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Model NDP-10 / DP-10 - 3/8” Maximum Capacity 20 L/min SPECIFICATION Plastic Pumps 3/8” BSP 3/8” BSP Port Dimensions Liquid Inlet Liquid Outlet Air Inlet Air Exhaust Discharge Volume per Cycle Air Pressure Range Maximum Discharge Pressure Maximum Solid Size Weight Metal Pumps 3/8” BSPT 3/8” BSPT 1/4" BSPT (with ball valve) Rc 3/8” 52 cc MATERIALS OF CONSTRUCTION Wetted Materials Teflon (PTFE) Diaphragm Materials Neoprene Rubber (CR) Nitrile Rubber (NBR) Nordel® (EPDM) Santoprene® (TPO) Hytrel® (TPEE) PTFE Model NDP-15 - 1/2” Maximum Capacity 45 L/min SPECIFICATION Plastic Pumps 1/2” BSP 1/2”...

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