Nikkiso - Non-Seal Centrifugal Canned Motor Pump
The NIKKISO centrifugal canned motor pump is specifically used in chemical industry for transfer and circulation tasks, particularly for supercritical fluids. The pump and motor are integrated in the sealed leak-proof structure of the centrifugal canned motor pump. The pump meets the specification of the API-685 standard. In use, the centrifugal canned motor pump implements flow rates up to 1,200 m³/h and works with pressures up to 40 bar (at 50 Hz).
centrifugal canned motor pump
The NIKKISO centrifugal canned motor pump is an ideal solution for transfer and circulation tasks in the chemical industry. It can be used to pump hazardous, toxic and supercritical fluids.
The stator has a two-layer structure, consisting of the stator liner, stator band, and extremely tight terminal strip, allowing for a higher degree of safety. With the pressure raised by the impeller, the liquid is sent to the discharge side. A part of the fluid also reaches the motor and is used to lubricate the bearings and cool the motor of the centrifugal canned motor pump. Then, this part is lead back through the extraction openings on the shaft (standard model) for the intake side.
The NIKKISO Non-Seal is a compact centrifugal canned motor pump with integrated motor that covers high-pressure and high-temperature applications.
Directly integrating the canned motor into the centrifugal pump does not only ensure environmental protection, but also safety at the plant. All parts of the pump are also designed for easy and fast maintenance. Therefore, you can minimize unproductive down times.
Compared to solenoid driven pumps, the NIKKISO Non-Seal centrifugal canned motor pump features considerably better high-pressure properties. Therefore, it is ideally suited for transfer and circulation tasks with critical or hazardous fluids.
Since the fluids lubricate the sliding parts, no additional lubrication is required. This gives the pumps a high degree of serviceability.
Due to the integrated structure of the centrifugal canned motor pump, it only needs very little space and is ideal for applications in which a small footprint is required.
The pump is quiet and has low vibration. It is extremely weather-resistant and has good dust protection.
The pump has only low maintenance costs due to the relatively low number of components and the real-time monitoring of the bearing wear.
Nikkiso centrifugal canned motor pumps comply with API 685 standards and ATEX directives and can be used for the production of most liquids in the oil and chemical industries.
A proper process monitoring not only prevents failures, it also ensures a long lifetime of pump. To support this, we recommend at least a mechanical bearing monitoring system for the canned motor pump.
NIKKISO centrifugal canned motor pumps meet the dimensions and nominal outputs in accordance with DIN EN ISO 2858. This means that NIKKISO fulfills the requirements of a standardized chemical pump, which makes it easier to exchange existing pumps.
We ensure that your centrifugal canned motor pump is running as properly as possible. The Nikkiso SAO relay detects a dry-run of the pump. This provides for proper and safe operation and prolongs the service life of the pump.
To improve the suction conditions (NPSHR), the Nikkiso centrifugal canned motor pumps can be equipped with an inducer.
From engineering to commissioning – all from a single source: Our systems are suitable for sea transport and can be completely disassembled and reassembled at the destination.
LEWA supplies the required accessories from a single source. For the HM pump type, a dip tank is available for feeding the rinsing liquid to the mechanical seal.
