Cargo Pump (Deepwell) · Pumps
Naniwa Pump Naniwa DVS 200/165 is a deepwell cargo pump. It is installed vertically in or through a cargo tank, with the pumping element positioned to remove cargo from the tank and the drive or transmission arranged according to the vessel design. Its purpose is to discharge or circulate liquid cargo while minimizing long suction piping from the tank bottom. The existing record identifies cargo-service duty for this pump. The long vertical arrangement makes shaft alignment, bearings, column sections, sealing and cargo compatibility important to reliable operation. The exact model designation identifies pump size and hydraulic selection within the cargo-pump family; capacity, head, materials and permissible cargoes must be confirmed from manufacturer and vessel documentation.
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What our service work and the manufacturer documentation say about keeping this model running.
Inspect accessible drive, coupling, top seal, column connections and monitoring points before cargo operations. Trend vibration, drive load, discharge pressure and delivery and investigate deviations from normal performance. Maintain the pump within the cargo compatibility and operating conditions specified for the vessel. Inspect hydraulic components, bearings and shaft sections during scheduled tank entry or overhaul. Check shutdown, remote control and emergency-stop functions before loading or discharge operations. Refer to manufacturer and class documentation for exact wear limits, alignment criteria and cargo restrictions.
Keep top-seal and gasket sets, bearings, coupling components, drive-system consumables and manufacturer-recommended impeller or shaft-line wear parts. Spare strategy should reflect cargo-service criticality and the difficulty of removing the pump from the tank. Confirm materials and parts against the exact model and cargo application.
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