The Aqua-Pro Universal 5.5 Gallons Per Minute Water Pump is designed with an automatic on demand , fixed pressure switch to easily regulate water flow for multiple fixtures. Compact but capable, it is a great fit for tight spaces. Comes with 1/2 Inch NPS male threaded fittings, to allow for adapting to a variety of inlet types to fit any application.• Type: Self-Priming• Pump Operation: 12 Volt DC• Flow Rate: 5.5 Gallon Per Minute• Pressure Rating (PSI): 60 Pound Per Square Inch• Inlet Port Type: 1/2 Inch Male Threads• Outlet Port Type: 1/2 Inch Male Threads• Length (IN): 8-1/2 Inch• Width (IN): 5-3/4 Inch• Height (IN): 5-3/16 Inch• Material: Plastic• With Thermal Overload Protection: Yes• With Pressure Switch: Yes• Variable Flow Technology• Built In Check Valve â Prevents Back Flow, Allows For City Water Connection• Current Draw: 8 To 15 Ampere• Carries CE, RoHs, FDA, IAPMO US And Canadian Certifications Run-Dry Safe Safe For Use With Propylene Glycol (RV Non-Toxic) Antifreeze On Demand Operation | Aqua Pro Fresh Water Pump, Self-Priming; 5.5 Gallon Per Minute