Applications: designed for handling liquefied hydrocarbon gases, volatile flammable and inflammable liquids as well as solutions of inorganic alkalis (sodium hydroxide) at the process plants in the oil-refining industry. May be also used to transfer water and condensate in the steam and water circuit systems. Design: ndms series motor pump units consist of a centrifugal pump and an induction motor in the explosion-proof version, which are mounted on a common fabricated base plate. The pump and motor shafts are connected by means of a flexible coupling. The pump units shall be rigidly anchored to the foundation, and piping shall be also rigidly connected to the pumps. The pumps as components of the pump units are electrically driven horizontal, centreline-supported, multistage ring section centrifugal pumps with rotor axial thrust balancing by a balance drum.
