YW29 miniature vacuum diaphragm pump has high flow and long life. It is suitable for various medical, environmental protection, chemical, biological engineering and other instruments and equipment. It has an ultra-small volume and supports a variety of motors. Maintenance-free and long life. Item Effciency Life span Cost Noise YW29-B in Pralle Best-Up to 75% motor efficiency at high power levels Good -6000 hrs Best Good YW29-B in Series Better-Up to 60% motor efficiency at low loads Good - 6000 hrs good Better Item Flow Pressure Vacuum degree Motor Type Voltage…