The DICKOW®-Inline-Pumps, series NCV / NCVL, have been developed for the chemical, petrochemical and related industries.
Since the pumps are installed inline, only a minimum of space is required and therefore, these pumps are suitable for package units. No time-consuming alignment of couplings is required. Ball bearing failures through inadequate alignment are excluded.
With a wide selection of materials and shaft sealing systems, the NCV-pumps are suitable for handling nearly all kinds of liquids used in the above mentioned industries. For example: acids, lyes, hydrocarbons, hot water up to 234 ºC (455 ºF), hot oil up to 350 ºC (660 ºF), cooling fluids, solvents etc.
N/AConstruction The DICKOW®-Inline-pumps are single stage, single-flow volute casing pumps in vertical construction with inline flange arrangement. The drive motor is connected with the pump casing by a motor support lantern.
Two different designs are available.
Type NCVL The pump shaft is beared by the bearing bracket of a standard horizontal pump. Power is transmitted from motor shaft to pump shaft by a spacer coupling. After removal of the spacer, the bearing bracket including shaft seal and impeller can be removed without demounting the motor.
Drive motors All standard flange mounted motors can be applied without any modification. No special shaft designs are required.
Pump shaft, bearings The connections "shaft nut - impeller hub" and "impeller hub - shaft sleeve" are sealed by confined gaskets, preventing contact of pumped liquid with the pump shaft.
The NCVL-type has the pump shaft carried in grease lubricated ball/roller bearings which are held by the bearing bracket. Regreasing device is available.
Impeller To minimize thrust load, the impeller is fitted with wear rings and balancing holes in the hub. The impeller is keyed to the pump shaft and secured by shaft nuts with Heli-Coil insert. Impellers are properly statically balanced according to DIN ISO 1940 T1 with a grade of G 6.3. This grants smooth vibration free running.
Intermediate casing The intermediate casing separates the pumped liquid from the atmosphere by the sealing system and by confined casing gasket.