Product Description
Zenit Grey DRG Dreno Pump
The Zenit Grey DRG Dreno Pump provides dependable submersible pumping for drainage, civil lifting and industrial water recirculation. Its cast-iron channel impeller creates a large free passage; therefore, the pump can handle compatible water containing suspended solids.
Moreover, Zenit redesigned the Grey Series hydraulics and motors to improve performance, energy use and versatility. Consequently, the DRG range supports efficient operation in professional water-management systems.
Zenit DRG Drainage Pump Design
The Zenit Grey DRG Dreno Pump uses a cast-iron channel impeller. Unlike a vortex impeller, the channel design guides the liquid through defined hydraulic passages.
As a result, the Zenit DRG drainage pump combines efficient fluid transfer with solids-handling capability. In addition, the large free passage helps reduce clogging when the liquid contains compatible suspended matter.
Key Features of the Grey DRG Submersible Pump
- Cast-iron channel impeller
- Large free passage
- Power range from 0.55 to 18.5 kW
- Two-, four- and six-pole motor options
- 50 Hz and 60 Hz configurations
- Maximum free passage up to 100 × 70 mm
- Maximum 50 Hz flow of 205.3 l/s
- Maximum 50 Hz head of 50 m
- Maximum 60 Hz flow of 201 l/s
- Maximum 60 Hz head of 38.5 m
- Horizontal and vertical discharge options
- Two silicon-carbide mechanical seals
- AISI 431 stainless-steel drive shaft
- Seal-chamber leakage sensor
- ATEX and IECEx versions available
Together, these features make the Zenit Grey DRG Dreno Pump suitable for demanding drainage and water-lifting installations.
DRG Channel-Impeller Pump Performance
At 50 Hz, the DRG channel-impeller pump range covers 0.55–18.5 kW. Moreover, selected configurations deliver up to 205.3 l/s and develop heads up to 50 metres.
Meanwhile, the 60 Hz Grey DRG submersible pump range reaches up to 201 l/s and 38.5 metres of head.
However, these figures represent separate maximum limits across the complete range. Therefore, engineers must select each Zenit Dreno water pump from its individual performance curve.
Large Free-Passage Zenit Dreno Pump
Selected DRG models provide a maximum free passage of 100 × 70 mm. Consequently, the Zenit Dreno pump can handle compatible suspended solids that may block smaller hydraulic passages.
Moreover, the hydraulic design helps discharge solids and limit impeller fouling. Nevertheless, the DRG does not include a grinder, chopper or cutting system.
Therefore, liquids containing long fibres, filaments or difficult solid waste may require a Zenit GRG, CTG or another specialised hydraulic configuration.
Grey DRG Pump Motor and Construction
Zenit developed the Grey Series around redesigned motors and hydraulics. Consequently, each motor-hydraulic combination targets reliable performance at its intended duty point.
The DRG motor casing and standard impeller use GJL-250 cast iron. In addition, the drive shaft uses AISI 431 stainless steel, while corrosion-resistant epoxy paint protects the external surfaces.
Therefore, the Zenit Grey DRG Dreno Pump provides durable construction for professional drainage and water-transfer systems.
DRG Mechanical Seals and Leakage Monitoring
The Grey DRG submersible pump uses two silicon-carbide mechanical seals inside an inspectable oil chamber.
As a result, the oil lubricates and cools the sealing faces. Moreover, the chamber prevents direct contact between the mechanical seals and suspended material in the liquid.
A leakage sensor also monitors the oil chamber. Consequently, operators can identify water ingress and schedule maintenance before serious motor damage occurs.
Anti-Clogging DRG Channel Hydraulics
Zenit shapes the DRG hydraulic section to promote the expulsion of suspended solids. Therefore, the channel-impeller pump helps prevent fouling around the impeller.
In addition, correct pump sizing maintains sufficient flow velocity through the pump and discharge pipe. As a result, facilities may reduce sediment accumulation and unplanned cleaning.
However, slow operation far from the recommended duty point may reduce this benefit.
Zenit DRG Installation Options
Zenit supports free-standing and permanent installation of the DRG drainage pump. Alternatively, engineers can install the pump with a compatible vertical or horizontal bottom coupler.
Consequently, technicians can lift the unit from the sump without entering the chamber. Moreover, the guide system maintains alignment between the pump and discharge connection.
Grey DRG Operating Conditions
Published Grey Series limits include:
- Maximum liquid temperature of 40°C
- Permitted liquid pH from 6 to 14
- Maximum immersion depth of 20 m
- Maximum liquid density of 1.1 kg/dm³
- Maximum acoustic pressure below 70 dB
- Up to 20 starts per hour below 10 kW
- Up to 15 starts per hour above 10 kW
However, these figures describe the wider Grey Series. Therefore, engineers should confirm the limits of the exact Zenit Grey DRG Dreno Pump configuration.
Zenit DRG Dreno Pump Applications
The Zenit DRG drainage pump suits:
- Industrial water recirculation
- Process-water transfer
- Civil water lifting
- Stormwater drainage
- First-rainfall collection tanks
- Industrial drainage systems
- Basement and underpass drainage
- Treatment-plant water transfer
- Rainwater management
- Compatible water containing suspended solids
Moreover, its large flow range supports both compact stations and major drainage installations. Nevertheless, users must review particle size, fibre content, temperature and chemical composition before selection.
Certified Zenit DRG Pumps
Zenit offers selected Grey Series pumps with ATEX and IECEx certification carrying the marking II 2G Ex db h IIB T4 Gb.
Therefore, approved configurations may serve specified potentially explosive gas environments. However, certification varies by model.
Consequently, buyers must verify the nameplate, certificate and permitted installation conditions for the ordered Zenit DRG drainage pump.
Selecting a Grey DRG Submersible Pump
Correct selection depends on required flow, total head, suspended-solids size, pipe dimensions and installation method.
In addition, engineers should confirm the power supply, operating frequency, motor rating, discharge connection and hazardous-area classification. Therefore, specialists should select the Zenit Grey DRG Dreno Pump from model-specific hydraulic data.
Request a Zenit Grey DRG Pump in the UAE
Contact our pump specialists for technical selection, specifications and UAE pricing.
Please provide the required flow, total head, water composition, suspended-solids size, sump dimensions and installation arrangement. Consequently, our team can recommend the correct Zenit Grey DRG Dreno Pump model.