Durga Pumps offers the DR Series Rotary Gear Pump for dependable transfer of oils, fuels, petroleum products and other compatible viscous liquids. Designed for steady fluid movement in industrial processes, the pump uses a positive-displacement operating principle to deliver a consistent volume with every revolution. Its robust construction, accurately manufactured gears and carefully selected components make it suitable for continuous-duty applications where reliable suction and controlled flow are important.
As a trusted Rotary Gear Pump Manufacturer in India, Durga Pumps provides multiple DR Series models for different capacity and connection requirements. The standard range extends from compact 1/4-inch models to 3-inch models, with capacities listed from 5 LPM to 500 LPM at 1440 RPM. This range allows users to select a pump according to required flow, fluid properties and operating conditions. The DR Series can be considered for transferring compatible lubricating oil, furnace oil, diesel, light fuel oil and other non-corrosive viscous fluids. Final pump selection must always be based on the liquid viscosity, operating temperature, required flow rate, discharge pressure, suction conditions and material compatibility. Share these details with Durga Pumps to receive an application-specific recommendation.
A Rotary Gear Pump is a positive displacement pump that moves liquid using two rotating gears enclosed within a close-fitting casing. As the gears rotate and separate on the suction side, they create space that draws liquid into the pump. The liquid becomes trapped between the gear teeth and the casing and is carried towards the discharge side. When the gears re-mesh, the liquid is pushed out through the delivery port.
Unlike a centrifugal pump, a gear pump moves an approximately fixed volume of liquid per revolution. This makes it useful for applications that require a stable and predictable flow. Rotary gear pumps are particularly effective with clean, lubricating and viscous liquids. They are widely used in lubrication systems, oil circulation units, fuel transfer systems and general industrial fluid-handling installations.
The working cycle consists of four basic stages:
| Component | Standard material |
|---|---|
| Casing | IS 210 Grade FG 280 cast iron |
| R.V. cover | IS 210 Grade FG 280 cast iron |
| Gland cover | IS 210 Grade FG 280 cast iron |
| Shafts | SAE 8620 |
| Gears | EN-8 |
| Sealing | Oil seal |
| Bearings | Bronze bush bearings |
| Plug | Brass |
| Plug caps | Aluminium |
DR Series Technical Specifications
| Pump model | Inlet × outlet size (BSP) | Capacity at 1440 RPM | ||
|---|---|---|---|---|
| LPM | US GPM | m³/hr | ||
| DR-025 | 1/4" × 1/4" | 5 | 1.3 | 0.3 |
| DR-050 | 1/2" × 1/2" | 20 | 5.3 | 1.2 |
| DR-075 | 3/4" × 3/4" | 30 | 7.92 | 1.8 |
| DR-100 | 1" × 1" | 50 | 13.5 | 3.0 |
| DR-125 | 1 1/4" × 1 1/4" | 75 | 19.8 | 4.5 |
| DR-150 | 1 1/2" × 1 1/2" | 110 | 29 | 6.6 |
| DR-200 | 2" × 2" | 225 | 59.4 | 13.5 |
| DR-250 | 2 1/2" × 2 1/2" | 350 | 92.5 | 21 |
| DR-300 | 3" × 3" | 500 | 131.6 | 30 |
The DR Series Industrial Rotary Gear Pump can be used in compatible fluid-transfer and circulation duties across a range of sectors, including:
Do not select a pump based only on the industry name. The exact liquid, viscosity, temperature, solids content, corrosiveness and operating duty must be reviewed before installation.
Depending on material and seal compatibility, a Rotary Gear Pump may be considered for clean, lubricating fluids such as:
Standard gear pumps are generally not intended for abrasive fluids or liquids containing hard solids because particles can damage gears, bearings and internal clearances. Corrosive, hazardous, food-grade or high-temperature media may require a different material, sealing method or specially engineered model. Always share the complete fluid data with the manufacturer.
Choosing the correct pump requires more than matching the pipe connection. Provide the following information to Durga Pumps:
A technically correct selection improves efficiency, reliability and component life while reducing avoidable maintenance.
Installation and safety arrangements must follow the supplied manual and applicable engineering standards. A qualified engineer should review the complete system.
Durga Pumps focuses on practical pumping solutions for industrial liquid-transfer requirements. The DR Series offers multiple sizes and capacities, enabling users to select a model that is closer to their required duty. Clearly listed construction details and model-wise capacity data also simplify preliminary comparison.
Customers can share their liquid type, viscosity, temperature, flow, pressure and installation information to receive selection assistance. This application-based approach is important because the long-term performance of a gear pump depends on correct sizing as much as it depends on pump construction.
For buyers searching for a Rotary Gear Pump Manufacturer, Durga Pumps provides a direct enquiry route for DR Series pump selection, pricing and availability. Contact the team with complete operating details to request a quotation and confirmed technical datasheet.
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