Product Description
Zenit UNIQA ZUG-OC Open Channel Pump
The Zenit UNIQA ZUG-OC Open Channel Pump provides heavy-duty submersible pumping for sewage and wastewater containing suspended solids. Its cast-iron channel impeller offers a large free passage; therefore, the pump can move high wastewater volumes while reducing clogging risks.
Moreover, the ZUG OC range combines efficient hydraulics with Premium IE3 motor design. Consequently, it suits municipal, commercial and industrial systems that require dependable wastewater lifting.
ZUG-OC Open Channel Pump Design
The Zenit UNIQA ZUG-OC Open Channel Pump uses a channel impeller manufactured from cast iron as standard. Its open hydraulic passages allow suspended solids to move through the pump without passing through a grinder or cutting system.
In addition, Zenit designs the ZUG OC hydraulics to resist clogging and fouling. Therefore, this UNIQA open-channel submersible pump suits high-flow sewage and drainage duties.
Key Features of the Zenit ZUG OC Sewage Pump
- Cast-iron channel impeller
- Large free passage
- Suitable for suspended solids
- 1.1–250 kW range at 50 Hz
- Two-, four-, six- and eight-pole options
- DN65–DN500 discharge sizes
- Free passage up to 160 × 110 mm
- Maximum 50 Hz flow up to 1,240 l/s
- Maximum 50 Hz head up to 100.3 m
- Premium IE3 motor design
- WET and DRY installation versions
- Dual silicon-carbide mechanical seals
- Standard seal-chamber leakage detection
- Hazardous-area versions available
Together, these features make the Zenit UNIQA ZUG-OC Open Channel Pump suitable for demanding sewage and wastewater infrastructure.
UNIQA Open-Channel Pump Performance
The 50 Hz ZUG OC wastewater pump range provides:
- Motor power: 1.1–250 kW
- Motor poles: Two, four, six or eight
- Discharge: DN65–DN500
- Maximum free passage: 160 × 110 mm
- Maximum flow: 1,240 l/s
- Maximum head: 100.3 m
Meanwhile, the 60 Hz UNIQA open-channel pump range covers 2.2–200 kW and reaches 1,186 l/s and 92.4 metres.
However, these values represent separate limits across each range. Therefore, engineers must select the exact pump from its model-specific hydraulic curve.
ZUG-OC Anti-Clogging Channel Hydraulics
The Zenit ZUG OC sewage pump combines large hydraulic passages with high hydraulic efficiency. As a result, it can transfer suspended solids without sacrificing the flow performance required by major pumping stations.
Moreover, operators can use selected configurations with a flushing valve. The valve keeps wastewater moving inside the collection tank; consequently, it may reduce sediment accumulation and cleaning requirements.
IE3 Motor for the Zenit ZUG OC Pump
Zenit designs UNIQA motors to achieve Premium IE3 efficiency according to EN 60034-30. Therefore, the Zenit UNIQA ZUG-OC Open Channel Pump supports lower energy consumption during prolonged wastewater-pumping duties.
In addition, Class H insulation and stator-integrated thermal protection support demanding operating cycles. Consequently, the Zenit high-flow wastewater pump combines strong hydraulic output with dependable motor protection.
WET and DRY ZUG-OC Pump Versions
The WET ZUG OC drainage pump operates fully submerged inside a sump or wet well. Alternatively, the DRY version can operate continually while partially submerged or installed inside a dry chamber.
The DRY UNIQA pump uses a closed cooling jacket with internal liquid circulation. Therefore, it requires no external cooling-water supply during normal operation.
Moreover, the cooling system supports continuous S1 operation in suitable dry-chamber installations.
Zenit ZUG OC Seals and Monitoring
The UNIQA solids-handling pump uses two silicon-carbide mechanical seals inside a large oil chamber. Moreover, Zenit installs a leakage-detection probe in the seal chamber as standard.
Consequently, operators can detect water ingress and plan maintenance before a seal problem causes an unexpected shutdown.
Zenit also offers optional motor monitoring. Therefore, facilities can integrate selected ZUG OC pumps into preventive-maintenance systems.
ZUG-OC Sewage Pump Material Options
The standard Zenit ZUG OC sewage pump uses EN-GJL 250 cast iron for its hydraulics and impeller.
Alternatively, selected configurations may use AISI 316 stainless steel, AISI 329 Duplex or Molib-tech materials. Consequently, engineers can configure the pump for more demanding wastewater conditions.
However, material availability depends on the model and Zenit’s technical approval.
Zenit Open-Channel Pump Applications
The Zenit UNIQA ZUG-OC Open Channel Pump suits:
- Municipal sewage lifting
- Industrial wastewater transfer
- Drainage pumping stations
- First-rainfall collection tanks
- Wastewater containing suspended solids
- High-flow sewage systems
- Treatment-plant intermediate transfer
- Process-water circulation
- Commercial wastewater stations
- Dense and heavily soiled liquids
Moreover, the ZUG OC pump can support wastewater with traces of potentially explosive substances when the selected model carries the required certification.
Certified UNIQA ZUG-OC Pumps
Zenit offers selected ATEX, IECEx and FM-certified UNIQA pumps for potentially explosive environments.
However, certification varies according to the motor, hydraulics, WET or DRY construction and ordered configuration. Therefore, buyers must verify the exact certification marking on the pump nameplate and documentation.
Selecting a Zenit ZUG OC Wastewater Pump
Correct selection depends on required flow, total head, suspended-solids size, wastewater density and installation method.
In addition, engineers should confirm discharge size, operating frequency, motor power, material requirements and hazardous-area classification. Therefore, specialists should select the Zenit UNIQA ZUG-OC Open Channel Pump from model-specific performance data.
Request a Zenit ZUG OC Pump in the UAE
Contact our pump specialists for technical selection, specifications and UAE pricing.
Please provide the required flow, total head, solids characteristics, sump dimensions and installation arrangement. Consequently, our team can recommend the correct Zenit UNIQA ZUG-OC Open Channel Pump configuration.


