Air Operated Double Diaphragm Pump These air operated double diaphragm pumps are suitable for pumping volatile or inflammable liquids, or fluids in hazardous areas. They are self priming and dry running and fully submersible. No moving parts are in contact with the liquid, except the diaphragm,so are practically maintenance free. Pumps are available in a wide range of sizes and materials. Please call sales for information on pumps other than those detailed below. Sizes from: 1/4" to 3" Bodies in: Aluminium, Cast Iron, 316 Stainless Steel, Polypropylene, PVDF, PVC PTFE Diaphragms in: Nitrile, Neoprene, Hytrel®, EPDM, PTFE, Santoprene®, and Viton®. Specification -Housing Polypropylene -Diaphragm PTFE -Max working pressure 5 Bar -Max working temperature 60°C -Air inlet 1/4" BSP -Air Supply Liquid pressure + 0.5 bar min -Pump Head 45m -Available Models -Max Flow Rate Max Total Lift Connections (port size) Code 7 L/min 1.5m 1/4" BSP 30-60500 (YNDP-5FPT) 14 L/min 6m 3/8" BSP 2278 (YNDP-10BPT) 30 L/min 6m 1/2" BSP 30-606111