Little Giant Submersible Pump 170 GPH # 1-A (500203). Operates submersed only. Small submersible oil-filled pump with epoxy coated cast aluminum housing. For commercial, industrial and home applications including statuary fountains, water displays, air conditioners, machine tool coolants, and many other applications where liquid must be transferred or recirculated. This pump is not recommended for aquariums, swimming pools and fuel oil transfer.