1HP,1.5HP,2HP,3HP,4HP   Applications: 1.Special materials are used. With superior pressure up to 7 kg/cm2 . 2.The optimal performance is for hundred times star-up frequency use everyday in public spa center. 3.Superior high flow performance in the same products. 4.Tailor-made impeller an mechanical seal suitable for long-time use. 5.Internal innovative dedign and with big suctior. 6.Simple designed basket easy to take out and install. 7.Five different models can be selected from 1HP-4HP. 8.Ultra quiet and IP55 motor. 9.Come with two standard 2 inches connectors easy to install. 10.100% factory tested.