Product Description
Zenit Grey DGG Draga Pump
The Zenit Grey DGG Draga Pump provides dependable submersible pumping for biological liquids, unscreened sewage and industrial wastewater. Its cast-iron vortex impeller creates a full free passage. Therefore, suspended solids can move through the hydraulic casing with limited direct contact with the impeller.
Moreover, Zenit designed the Grey Series motors and hydraulics to support efficient performance and versatile operation. Consequently, the DGG range suits civil, agricultural and industrial wastewater systems across India.
Zenit DGG Vortex Pump Design
The Zenit Grey DGG Draga Pump uses a vortex impeller manufactured from GJL-250 cast iron. During operation, the impeller creates a swirling flow inside the casing.
As a result, much of the wastewater moves through the pump without passing through narrow impeller channels. Therefore, the Zenit DGG vortex pump can handle irregular suspended solids while reducing blockage risks.
Key Features and Benefits
The Grey DGG submersible pump provides:
- Cast-iron vortex impeller
- Full free-passage hydraulics
- Suitability for biological liquids
- Capability for unscreened wastewater
- Power range from 0.55 to 15 kW
- Two- and four-pole motor options
- 50 Hz and 60 Hz configurations
- Maximum 50 Hz flow up to 105.6 l/s
- Maximum 50 Hz head up to 24.5 m
- Maximum 50 Hz free passage up to 125 mm
- Maximum 60 Hz flow up to 66 l/s
- Maximum 60 Hz head up to 31.8 m
- Two silicon-carbide mechanical seals
- Seal-chamber leakage monitoring
- ATEX and IECEx versions available
Together, these features make the Zenit Grey DGG Draga Pump suitable for professional sewage and wastewater applications.
DGG Full-Passage Pump Performance
At 50 Hz, the DGG range covers motor ratings from 0.55 to 15 kW. Moreover, selected models deliver flow rates up to 105.6 l/s and heads up to 24.5 metres.
Meanwhile, selected 60 Hz configurations provide flow rates up to 66 l/s and heads up to 31.8 metres.
However, these figures represent separate maximum limits across the range. Therefore, engineers should select each DGG pump from its individual hydraulic performance curve.
Zenit Draga Pump Free Passage
Selected 50 Hz models provide a full free passage up to 125 mm. In comparison, selected 60 Hz models provide passage up to 100 mm.
Consequently, the Zenit Draga sewage pump can transfer compatible wastewater containing relatively large suspended solids. Moreover, vortex hydraulics help reduce direct contact between solids and the impeller.
Nevertheless, the DGG does not use a grinder or cutting system. Therefore, wastewater containing long fibres or filaments may require a dedicated grinder or chopper pump.
Grey DGG Motor and Construction
Zenit matches Grey Series motors with suitable hydraulic configurations to support efficient performance at the intended duty point. Consequently, the Zenit Grey DGG Draga Pump can provide reliable operation without unnecessary motor oversizing.
The pump uses a GJL-250 cast-iron motor casing and impeller. In addition, an AISI 431 stainless-steel drive shaft and protective epoxy coating support durability in demanding wastewater environments.
Mechanical Seals and Monitoring
The Grey DGG vortex pump uses two silicon-carbide mechanical seals inside a large oil chamber. Therefore, the oil lubricates and cools the sealing faces.
Moreover, the chamber helps separate the seals from suspended solids and wastewater contamination. A leakage sensor also monitors the seal chamber.
Consequently, operators can identify water ingress early and plan maintenance before serious motor damage develops.
Zenit DGG Installation Options
Zenit supports free-standing and permanent installation of the DGG pump. Alternatively, engineers can use compatible vertical or horizontal bottom-coupling systems.
As a result, technicians can remove the pump from the sump without entering the chamber. Moreover, the guide system helps maintain alignment with the discharge connection.
Zenit DGG Applications in India
The Zenit Grey DGG Draga Pump may support applications across India such as:
- Municipal sewage pumping
- Biological wastewater transfer
- Unscreened wastewater lifting
- Wastewater treatment plants
- Industrial wastewater systems
- Livestock-farm wastewater
- Commercial sewage stations
- Civil wastewater lifting
- Contaminated drainage water
- Wastewater containing suspended solids
Moreover, its full free-passage hydraulics support solids-handling duties where clogging presents a concern.
However, engineers should review solids dimensions, fibre content, liquid temperature and chemical composition before final pump selection.
Hazardous-Area Configurations
Zenit offers selected Grey Series pumps with ATEX and IECEx certification for specified potentially explosive gas atmospheres.
However, certification varies by model and configuration. Therefore, engineers should verify the pump nameplate, certification and permitted installation conditions before use in a hazardous area.
Selecting the Correct Zenit DGG Pump
Correct selection depends on:
- Required flow and total head
- Solids size
- Wastewater composition
- Fibre content
- Sump dimensions
- Installation method
- Motor power
- Operating frequency
- Discharge connection
- Hazardous-area requirements
Therefore, engineers should select the Zenit Grey DGG Draga Pump from model-specific hydraulic data. Otherwise, an unsuitable configuration may reduce efficiency, increase clogging risk or shorten equipment life.
Product Enquiries in India
The Zenit Grey DGG Draga Pump is presented through Pumps Bharat for municipal sewage, biological wastewater, industrial effluent, livestock wastewater and other solids-handling applications across India.
When submitting an enquiry, please provide the required flow, total head, wastewater description, solids size, sump dimensions, power supply and installation arrangement. Consequently, the available DGG configurations can be evaluated against the application requirements.