OWH type pumps
OWH pumps are designed for drainage of deep mines. The solid design of the OWH pump is suitable for unfavorable operating conditions typical of mine drainage.
The pumps are designed to carry increased external loads and the presence of mechanical and chemical impurities in mine water.
The solid and compact structure of OWH pumps allows them to operate in unfavorable operating conditions. Due to these design features, OWH pumps, apart from their basic use in drainage of underground mines, are also used in other industries where there is a need to pump contaminated liquid, such as the steel industry, cement and lime plants, open pit mines and steelworks.
Building & Construction Principles
Multistage & Suction Ports
OWH pumps are stationary, horizontal multistage pumps. The discharge port is directed vertically upwards, and the suction port is directed horizontally to the left or right depending on your needs.
Hydraulics, Bearings & Seals
Closed impellers and vane vanes are used. The axial thrust is balanced by the relief disc. Two types of bearings can be used: oil-lubricated plain bearings or grease-lubricated rolling bearings. The shaft seal may be rope or mechanical.
Double-Sided Drive System
The drive for the highest lifting heights is double-sided (two motors per pump), delivering maximum torque balance for extreme deep-well discharge pressures.
Explosion-Hazardous Environment Capability
OWH pumps can be used in explosion-hazardous areas as devices group I category M2.
Operating Limits & Technical Specifications
Standards & Certifications
Applicable Standards
EN 12162
Safety & Hydrostatic Requirements
Full conformity with European standard EN 12162 safety protocols and high-pressure hydrostatic integrity testing.
ATEX Directive
2014/34 / EU
Certified for explosion-hazardous mining areas as devices Group I, Category M2.
Product Features & Key Highlights
Selected Construction Materials
Construction materials for OWH pumps are selected depending on the pumped liquid. We use cast iron, salt-resistant, wear-resistant and duplex cast steel.
Dedicated Deep Mine Drainage Design
OWH pumps are designed for drainage of deep mines. The solid design of the OWH pump is suitable for unfavorable operating conditions typical of deep mine dewatering.
Heavy External Load & Contaminant Tolerance
The pumps are designed to carry increased external loads and withstand the presence of mechanical and chemical impurities in mine water.
Solid & Compact Geometry
The solid and compact structure of OWH pumps allows them to operate reliably in harsh underground conditions and confined pumping chambers.
Extensive Heavy Industry Usage
Beyond deep mine drainage, OWH pumps are deployed across the steel industry, cement and lime plants, open-pit mines, and steelworks needing to pump contaminated fluids.
Dual-Drive for High Heads
Unique double-sided drive capability ensures reliable high-power input for lifting water up to 1200 meters vertical head in single pumping stations.
Construction Materials
Construction materials for OWH pumps are selected depending on the pumped liquid. We use cast iron, salt-resistant, wear-resistant and duplex cast steel.
Cast Iron
Proven, cost-effective structure for moderate mine waters and general dewatering without extreme acidity.
Salt-Resistant Cast Steel
Formulated for high salinity mine waters and underground brine reservoirs to prevent chemical corrosion.
Wear-Resistant Cast Steel
Special heat-treated cast steel designed to resist high-velocity abrasive erosion from solid coal and rock particulates.
Duplex Cast Steel
Maximum tensile strength and chemical resistance for deep mine pits with harsh, corrosive slurry water.
Need technical consultation or sizing for OWH 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.