OW type pumps
OW pumps are designed for underground mine drainage. The robust design of the OW pump is suitable for the harsh operating conditions typical of mine drainage.
The pumps are designed to withstand increased external loads and the presence of mechanical and chemical contaminants in mine water. The robust and compact design of OW pumps allows for operation in unfavorable operating conditions. Due to these design features, OW pumps, in addition to their primary use in underground mine drainage, are also used in other industries requiring the pumping of contaminated fluids, such as the steel industry, cement and lime plants, open-pit mines, and steel mills.
Building & Construction Principles
Multistage Configuration & Orientation
OW pumps are stationary, horizontal multistage pumps. The discharge port is directed vertically upwards, and the suction port can be placed in four positions, i.e. rotated by 90° depending on needs.
Hydraulics, Bearings & Sealing
Closed impellers and vane vanes are used. The axial thrust in the pump is balanced by the disc relief system. Rolling bearings transmitting radial forces are lubricated with grease. The shaft seal may be string, amorphous or mechanical.
Explosion-Hazardous Environment Capability
OW pumps can be used in explosion-hazardous areas as devices group I category M2.
Operating Limits & Technical Specifications
Standards & Certifications
Applicable Standards
PN-EN ISO 9905
PN-EN ISO 5199
Full compliance with PN-EN ISO 9905 and PN-EN ISO 5199 specifications for high-performance multistage centrifugal pumps.
ATEX Directive
2014/34 / EU
Approved for operation in explosion-hazardous areas as devices Group I, Category M2.
Product Features & Key Highlights
Appropriately Selected Construction Materials
Construction materials for OW pumps are appropriately selected for the pumped liquids. We use cast iron, salt-resistant, wear-resistant and duplex cast steel.
Built for Harsh Mine Drainage
The robust design of the OW pump is suitable for the harsh operating conditions typical of mine drainage with heavy external loads and contaminants.
High Mechanical & Chemical Contaminant Resistance
The pumps are designed to withstand increased external loads and the presence of mechanical and chemical contaminants in mine water.
Cross-Industry Versatility
In addition to underground mine drainage, OW pumps are used in the steel industry, cement and lime plants, open-pit mines, and steel mills requiring contaminated fluid pumping.
Disc Relief Hydraulic Balancing
Automatic disc relief system neutralizes immense axial thrust across heads up to 900 meters for continuous smooth running.
Robust & Compact Geometry
Solid and compact structure allowing reliable operation in narrow underground gallery spaces and harsh pumping stations.
Construction Materials
Construction materials for OW pumps are appropriately selected for the pumped liquids.
Construction materials for OW pumps are selected depending on the pumped liquid. We use cast iron, salt-resistant, wear-resistant and duplex cast steel.
Cast Iron
Cost-effective, highly durable option for general industrial pumping and mild water handling without heavy corrosive elements.
Salt-Resistant Cast Steel
Engineered specifically for mine drainage applications with elevated salinity and aggressive chemical ions.
Wear-Resistant Cast Steel
High-hardness alloy formulated to resist severe hydraulic erosion from suspended quartz, mineral slurry, and abrasive mine solids.
Duplex Cast Steel
Austenitic-ferritic stainless alloy offering exceptional mechanical strength and maximum resistance to pitting and stress corrosion cracking.
Need technical consultation or sizing for OW type pumps?
Geomatics Middle East is the official dealer of Grupa Powen-Wafapomp SA in Oman. Contact our engineering team for datasheets, customized hydraulics, and pump selections.