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WPV Series

  • Overview
  • Features & Benefits
  • Specifications
  • Other Info

Overview

The Dickow WPV Series are single stage, single flow, self-priming, inline, side channel pumps.  The side-channel pump with its high differential head (achieved at low speed) has the advantage of operating more economically than standard centrifugal pumps for low capacities and high heads.  Vertical side-channel pumps are particularly suited to tank farms with underground storage tanks with a maximum diameter of 2.5 m.  The design of the pumps allows an installation directly on the dome cover so that suction lift is only slightly above the tank diameter and the suction pipe can be kept short.

The maximum operating pressure is 10 bar and the maximum operating temperature is 100°C.

For self-priming, it necessary to install the piping such that the operating liquid can remain in the pump.  During priming, a stable fluid film between the impellers and the disks centres the impeller in the chamber.  In applications where prolonged dry-running can be a problem, or when handling volatile liquids with low viscosities, the pumps can be fitted with additional SiC-rings to avoid contact between the rotating and stationary parts.

The pumped liquid is sealed against the atmosphere and the drive motor by a single metal bellows seal.  The rotating mechanical seal is fixed to the pump shaft by a shaft nut and sealed by a seal ring.  The stationary seal face is fitted to the bearing housing via a locating ring and sealed against the atmosphere by a gasket.  The drive motor is protected against mechanical seal leakage by a grease lubricated radial seal ring.  Possible leakage of mechanical seal is dissipated by the leakage control pipe and therefore visible.

When coupled with Ex-drive motors, the pumps can be applied in hazardous area Group II, Category 2.  The pumps meet the basic safety and health requirements of Explosionproof Directive 94/9 EC and are suitable for plants with increased safety requirements.

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