Pump innovations at Nordbau 2021

After the Covid break, many sup­pli­ers are return­ing to the stage now that trade shows can final­ly take place again. Con­sis­tent­ly present in Neumün­ster: Tsu­ru­mi from Düs­sel­dorf. As a nov­el­ty, the pump mar­ket leader presents the HS3.75SL, hence­forth the most pow­er­ful mod­el of the series.

The HS is for every­one and every­thing, they said. Tsu­ru­mi is posi­tion­ing it as a uni­ver­sal helper for dirty water. It meets a high­ly com­pet­i­tive field not only in the con­struc­tion indus­try, but also in the trades, indus­try and munic­i­pal­i­ties. How­ev­er, it is com­pet­ing there with the best pre­req­ui­sites. The com­pa­ny there­fore encour­ages prod­uct comparisons.

Par­tic­u­lar­ly note­wor­thy is the per­for­mance of the small sub­mersible pump: Com­pared to the pre­vi­ous­ly strongest mod­el of the series, the flow rate has prac­ti­cal­ly dou­bled, to 580 l/min now. The HS3.75SL can main­tain this val­ue at a con­stant lev­el. Com­po­nents are respon­si­ble for this. For exam­ple, the effi­cient oil dis­trib­u­tor, which reli­ably lubri­cates the unit in any posi­tion. The dou­ble inter­nal mechan­i­cal seal made of ultra-hard sil­i­con car­bide also con­tributes to the long ser­vice life. Elec­tri­cal dam­age caused by creep­ing mois­ture is rare any­way: The sup­pli­er her­met­i­cal­ly encap­su­lates each con­duc­tor in pot­ting compound.

The pump is con­sid­ered safe to run dry and does not require super­vi­sion. Users can car­ry out main­te­nance them­selves if they wish — Tsu­ru­mi’s sim­ple mod­u­lar design is a real sys­tem advantage.

By the way, the dimen­sions have not changed. How­ev­er, the man­u­fac­tur­er has had to adjust the elbow at the out­let to han­dle the flow rate. Many oth­er val­ues also remained the same, such as the motor pow­er (0.75 kW). As before, the pumped medi­um is dis­charged to the side in a spi­ral, which is good for sand water and mud. The scales indi­cate a dry weight of only 19.6 kg, despite the robust hous­ing made of spher­oidal cast iron GGG70. The over­all unit height is only 45 cm, and the hous­ing diam­e­ter is a slim 18 cm. In this respect, almost every­thing is the same, but much more pow­er­ful: Who would­n’t like that?

At its booth in the out­door area West-W210, the com­pa­ny will also be show­ing oth­er uni­ver­sal pumps and pro­vid­ing infor­ma­tion on the spe­cial design fea­tures of the Japan­ese pumps with inter­est­ing tech­ni­cal models.