3.0 Revolution 12Volt Water Pump - ShurFlos New Revolution fresh water pump design was created with a unique one-piece diaphragm and internal by-pass, assuring long life and top performance in all plumbing systems. The Revolution Pump is constructed for high flow demand, low noise and no rapid cycling along with ShurFlos quality reputation for reliability and dependability. The 4008 Revolution fresh water automatic demand pump is super quiet, thermally protected, can run dry without damage and mounts in any position. 12 Volt DC. 7.5 Amps. 45 PSI Shut-off Pressure. 3.0 GPM Flow Rate. Dimensions: 4.9 inch H x 8.1 inch L x 4.3 inch D. 1 per package.