Double diaphragm vacuum pump, for up to 800 tamps : 19.8 gal/min - 72 RPM - 10 psi gives uo ti 22gh if vacuum, significantly increases sap running compared to a gravity system. 110 vots, easy installation with 24 volt battery or solar panel, very light weight, FDA food approved components, useful for pumping water on an ATV and can be used to transfer the syrup to the syrup press. Various repair parts available.