Using a variety of imported corrosion-resistant materials , self-priming , thermal protection , smooth long-time continuous idling , long-time continuous load When the water pressure is too high , will protect themselves and normal work , water pipes will not burst Diaphragm combines the advantages of self-priming and Rubber bracket can absorb from the when working Totally sealed , high stable pressure Small in size , light in weight Safe and stable in use Installed in a dry , well-ventilated location ; pumps can not work in water Electric Water only , other accessories demo in the picture is not included, Manufacturer: Watreketal