Description Get the power and performance you need with the Delavan 7822FS-201-SBIP I-Series 12-Volt 60 PSI 2.2 GPM On-Demand Diaphragm Pump. This pump operates as a bypass pump, demand pump, or bypass demand pump. As an on-demand pump, it uses a demand switch that operates only when liquid flow is required. The 12-volt permanent magnet motor is thermally-protected and splash-proof, plus this diaphragm pump has a maximum flow rate of 2.2 gallons per minute. This diaphragm pump has a 3-chamber positive displacement, is capable of being run dry, and has excellent self-priming capabilities. This particular Delavan 7822FS-201-SBIP I-Series on-demand pump runs liquid at 140 degrees F maximum and features multiple inlet and outlet port options, including 3/8-inch FNPT, 5/8-inch Quick Attach, and 3/4-inch Quick Attach. With this pump from Delavan, you don't have to worry about a thing.