DICKOW Shaft sealing pump

DICKOW-PUMPEN

Acc. to API 610 Lasted Editions.

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Volute casing pumps : Type NCR

Type-NCR

GENERAL

The DICKOW-pumps, type NCR, are heavy duty centrifugal pumps for petroleum, petrochemical andnatural gas industries. The pumps are designed and manufactured according to API 610, 10th ed. / ISO 13709.

This international standard specifies requirements for centrifugal pumps used in the above industries. The standard does not refer to any outline dimensions of the pumps.

APPLICATION

The performance range of the NCR-pumps is subdivided such that acceptable efficiencies can be achieved for all service conditions.

The maximum capacity goes up to 700 m3/h (3100 USgpm). Differential head up to 145 mLC (480 ft) at 2900 rpm and 220 mLC (660 ft) at 3500 rpm. With a wide selection of materials and the possibility to install all shaft sealing systems according to API 682

DICKOW-NCR-pumps are suitable to convey nearly all kinds of liquids which are usual in the above mentioned industries. E.g. acids, lyes, chlorinated hydrocarbons, heat transfer media (HTM), all kinds of hydrocarbon fuels, liquid sulphur, melted plastics, bitumen etc.

If the application requires sealless pumps, consider also our magnetic coupled PRM-pumps according to API 685.

Volute casing pumps : Type NCL

Type-NCL
GENERAL

The DICKOW centrifugal pump acc. to EN22858 / ISO 2858 is designed for handling liquids in the chemical and petrochemical industry, in refineries, for heat transfer liquids ect. Dimensions and performance range are developed in accordance to EN 22858 (ISO 2858).

The whole range is so subdivided that for all service conditions the best efficiency is guaranteed. The maximum capacity goes up to 900 m3/h or 3960 US gpm. With a wide selection of materials and shaft sealing systems they are suitable to handle nearly all kind of liquids which are usual in the above mentioned industries.

APPLICATION

For example we call light fuels (all kinds), acids, lyes, solvents, hydrocarbons, heat transfer liquids, heavy fuel, liquid sulphur, melted plastics, bitumen etc.

For handling hot water above 1900C (3750F), our pump types NHL are available.

Volute casing pumps : Type NKL

GENERAL

The DICKOW standard HTM pumps, series NKLs according to EN 733, are designed as centrifugal pumps of light duty for handling heat transfer media. Dimensions and performance range comply with the requirements of EN 733.

Thus, the performance range is subdivided such that best efficiency is granted at all service conditions.

APPLICATION

The NKLs HTM pumps will be applied as circulating pumps in industrial heating plants. The performance range covers capacities up to 400 m3/h and differential heads up to 90 mLC in 50 cycle’s service. The maximum allowable operating temperature is 340°C without additional cooling.

The NKLs pumps with the single acting N10q seals can be applied when handling HTM with boiling pressure at operating temperature below the atmospheric pressure (<1 bar abs).

Type-NKL

Centrifugal pumps : Type HZ/HZA

Type-HZ-HZA

GENERAL

DICKOW-pumps of series HZ/HZA are single- or multistage centrifugal pumps with shaft sealing.

APPLICATION

HZ/HZA-pumps are applied in industrial and municipal water supply, for handling condensates, boiler feed water, fuels and for various other applications. The HZA type of end suction design has been developed for operating conditions with low NPSHA-values. The wear resistant SiC-sleeve bearing on the suction side reduces the maintenance costs because there is no second mechanical seal required.

The performance range is subdivided to achieve best efficiencies for all service conditions. With the possibility of applying several shaft sealing systems, HZ/HZA-pumps are suitable for handling almost all kinds of liquids which are free of abrasive solids and of suitable viscosity.

Max. Capacity and differential head:
50 Hz - appr. 500 m3/h and appr. 380 m
60 Hz - appr. 500 m3/h and appr. 460 m (appr. 2200 gpm and 1500 ft)

The maximum operating temperature is 180°C, operating pressure is 40 bars.

Self-priming centrifugal pumps : Type HZS/HZSA

Type-HZS-HZSA
GENERAL

The self-priming multistage DICKOW-centrifugal pump is designed for handling hydrocarbons and other volatile liquids.

The HZS-type is used in tank farms, for offloading of rail cars and trucks, filling of storage tanks, feeding hydrant systems on air fields and for other applications where priming of empty suction pipes is required.

APPLICATION

The HZSA-type with low NPSH-requirements and gas handling capability is developed for pumping liquefied petroleum gas (LPG).

Typical application is the filling of LPG-trucks in refineries.

The performance range is subdivided to achieve best efficiencies for all service conditions. With a wide selection of materials and the possibility of applying several shaft sealing systems as well as a hermetically sealed permanent magnetic coupling, the HZS / HZSA pumps are suitable for handling almost all kinds of liquids which are free of abrasive solids and of suitable viscosity.

Heavy duty self-priming side-channel pump : Type SC

Type-SC

GENERAL 

The DICKOW-pump, type SC, is a one or multi-stage, self-priming horizontal side-channel pump. The side-channel pump with its high differential head - also at low speed - has the advantage of operating more economically than normal centrifugal pumps applied for low capacity and high heads.


APPLICATION

Due to these facts, the side-channel pumps are able to solve many pumping problems in the chemical and petrochemical process plants.

The SC-pumps are also able to prime empty suction lines after initially filling with liquid before start-up. The maximum allowable operating temperature is 240 C (465 F).