Compact Automatic Demand Diaphragm Pump Features: Compact Design Measuring 6.4 (160 mm) in Length. Fully Automatic Demand Pump. Self-priming and Can Operate Dry Without Damage. Built-in Thermal Protector. Sealed Pressure Switch and Motor. Low Noise, Acid, Alkali, Corrosion Resistant. Compact design and plug-in port fittings make installation easy. Sealed pressure switch automatically starts and stops pump when discharge valve is opened and closed. Self-priming so pump can be located above supply tank. Can run dry without damage and handle liquids up to 130 F (54 C). Low amp draw for battery powered applications. Soft compliant Santoprene mounting system. No metal contact with liquid being pumped.