Commonly used for dispensing or transferring low viscosity fluids. This pump is constructed of polyethylene and is for use only with fluids compatible with polyethylene such as water based media, Antifreeze, detergents, washing fluids, waxes, soaps etc. This siphon pump is not recommended for fluids not compatible with pump materials of construction or hot water. It delivers 2 GPM and is designed for compatibility with 5 gallon pails. It is a self-priming unit.