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 pass through the hydraulic casing with limited contact against the impeller.
Moreover, Zenit redesigned the Grey Series motors and hydraulics to improve performance, energy use and versatility. Consequently, the DGG range supports reliable wastewater lifting in civil, agricultural and industrial installations.
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 travelling through narrow impeller channels. Therefore, the Zenit DGG vortex pump handles irregular suspended solids while reducing blockage risks.
Key Features of the Grey DGG Submersible Pump
- Cast-iron vortex impeller
- Full free-passage hydraulics
- Suitable for biological liquids
- Handles 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 of 105.6 l/s
- Maximum 50 Hz head of 24.5 m
- Maximum 50 Hz free passage of 125 mm
- Maximum 60 Hz flow of 66 l/s
- Maximum 60 Hz head of 31.8 m
- Two silicon-carbide mechanical seals
- Seal-chamber leakage sensor
- ATEX and IECEx versions available
Together, these features make the Zenit Grey DGG Draga Pump suitable for professional sewage and wastewater systems.
DGG Full-Passage Wastewater Pump Performance
At 50 Hz, the DGG full-passage wastewater pump range covers 0.55–15 kW. Moreover, selected models deliver up to 105.6 l/s and develop heads up to 24.5 metres.
Meanwhile, the 60 Hz range covers the same published power band. Selected configurations deliver up to 66 l/s and reach heads up to 31.8 metres.
However, these figures represent separate maximum limits. Therefore, engineers must select each Grey DGG submersible pump from its individual hydraulic curve.
Zenit Draga Pump Free Passage
Selected 50 Hz models provide full free passage up to 125 mm. In comparison, the maximum published passage for 60 Hz models is 100 mm.
Consequently, the Zenit Draga sewage pump can transfer compatible wastewater containing larger suspended solids. Moreover, vortex hydraulics reduce direct impeller contact with the pumped material.
Nevertheless, the DGG does not include a grinder or cutting system. Therefore, wastewater containing long fibres or filaments may require a specialised Zenit grinder or chopper pump.
Grey DGG Motor and Construction
Zenit combines each Grey Series motor with suitable hydraulics to provide efficient performance at the required duty point. Consequently, the Zenit Grey DGG Draga Pump supports reliable operation without unnecessary motor oversizing.
The pump uses a GJL-250 cast-iron motor casing and impeller. In addition, Zenit uses an AISI 431 stainless-steel drive shaft and corrosion-resistant two-component epoxy coating.
DGG Mechanical Seals and Monitoring
The Grey Series 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 separates the seals from suspended solids and wastewater contamination. A standard leakage sensor also detects moisture entering the oil chamber.
Consequently, operators can identify seal problems and plan maintenance before water reaches the motor.
Zenit DGG Pump Installation Options
Zenit supports free-standing and permanent installation of the DGG livestock wastewater pump. Alternatively, installers can use a compatible vertical or horizontal bottom-coupling system.
As a result, technicians can lift the pump from the sump without entering the chamber. Moreover, the guide system keeps the pump aligned with the discharge connection.
Grey DGG Operating Conditions
The wider Grey Series supports:
- Maximum liquid temperature of 40°C
- Liquid pH from 6 to 14
- Maximum immersion depth of 20 metres
- Maximum liquid density of 1.1 kg/dm³
- Acoustic pressure below 70 dB
- Up to 20 starts per hour below 10 kW
- Up to 15 starts per hour above 10 kW
However, engineers should confirm the limits of the exact Zenit Grey DGG Draga Pump model before installation.
Zenit DGG Draga Pump Applications
The Zenit DGG vortex pump suits:
- Municipal sewage pumping stations
- 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 supports solids-handling duties where clogging presents a concern. Nevertheless, engineers must review solids dimensions, fibre content, liquid temperature and chemical composition.
Certified Grey DGG 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 operate in specified potentially explosive gas atmospheres. However, certification varies by exact model. Consequently, buyers must verify the nameplate and supporting certificate before installation.
Selecting a Zenit DGG Vortex Pump
Correct selection depends on required flow, total head, solids size, wastewater composition and installation method.
In addition, engineers should confirm motor power, operating frequency, discharge connection and hazardous-area requirements. Therefore, specialists should select the Zenit Grey DGG Draga Pump from model-specific hydraulic data.
Request a Zenit Grey DGG Pump in the UAE
Contact our pump specialists for technical selection, specifications and UAE pricing.
Please provide the required flow, total head, wastewater description, solids size, sump dimensions and installation arrangement. Consequently, our team can recommend the correct Zenit Grey DGG Draga Pump model.