Versatile Material Compatibility Flowing and spacious when pumping mud and impurities there is minimal wear on the pump The head and flow can be adjusted through the opening of the air valve The pump has no rotating parts and no shaft seal The diaphragm separates the pumped medium from the moving parts and working medium of the pump and the conveyed medium will not leak outward It does not require electricity and can be used in a variety of setting, Manufacturer: Santiway