The 2.1 GPM High-Flo Pump from Fimco has a demand switch that operates only when liquid flow is required; the pump and motor stop instantly when discharge is closed. The 12V diaphragm design eliminates troublesome shaft seal. Santoprene diaphragms and Viton valves are standard.This high-flo pump can be run indefinitely without damage. For a longer pump life, it is made with a ball bearing drive and permanent magnet motor. Features excellent self-priming capability, Ready for Round-Up, 8 Amp draw, 60 PSI max pressure, and is fuse protected. The maximum temperature of pumped liquid is 130°F. No flammable or combustible fluids. The 2.1 GPM High-Flo pump is equipped with an internal fan which cools the pump during operation by up to 50%. Motor windings have been increased to help dissipate heat as well.