... solar water heater 3.DC12/24V Brushless DC booster pump for Pressurizing of pipes,Solar water circulating Features:1. Life: Expected ... is waterproof and submersible.7. It can use for solar water circulation system, Pressurizing of pipes, fountain, aquarium,ect.Reliable performance: ... OD(mm)Remarks133*53*53M22M22submersible Brushless DC booster pump for Pressurizing of pipes,Solar water circulating