1.Itanian dual mechanical seal 2.100~400kw,small power, low noise, high efficiency 3.with imported thermal protection device MST Series Sewage Submersible PumpCharacters:Italian dual mechanical seal.With imported thermal protection device316L SS shalfAISI304 pump bodynon-metal parts are made of PPS material.small power, big capacity, low noise,high efficiency, energy savingUsage:Suitable for ...