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Centrifugal pump with hydraulic sealing of the shafts gap by means of a hilfsfoerderrad during operation and with a through axial shafts displacement actuated shafts gap valve for sealing of the shafts gap during standstill
Centrifugal pump with hydraulic sealing of the shafts gap by means of a hilfsfoerderrad during operation and with a through axial shafts displacement actuated shafts gap valve for sealing of the shafts gap during standstill