DF6-2-1 / 2

Burks Series DF6-2-1/2 close coupled centrifugal pumps are available in 1750 RPM with capacities to 1100 GPM, heads to 95 feet, and in 3500 RPM with capacities to 950 GPM, heads to 380 feet. These rugged pumps allow maximum pumping temperatures to 225°F; pump models with the optional MJ Jacketed Seal® allow temperatures to 500°F. Burks Series G pumps accept inlet pressure to 100 PSI, case working pressure to 200 PSI, and suction from 1 ½" to 5", with discharge from 1 ¼" to 4".

All Series G Models feature standard construction bronze fitted cast iron, and are also available in all bronze or all iron. Flanged casing is available on 2" and 2 ½" pumps; 3" and 4" pumps are flanged only. And every Burks pump is factory tested to meet stringent Hydraulic Institute standards.

Burks DF6-2-1/2 Series Close-Coupled Centrifugal Pumps

High-Flow Performance in a Compact Close-Coupled Design

The Burks DF6-2-1/2 Series close-coupled centrifugal pumps are designed for commercial, industrial, HVAC, irrigation, and OEM applications requiring increased flow capacity, dependable performance, and efficient operation. Combining rugged construction with a compact footprint, these pumps deliver reliable liquid handling for water transfer, system circulation, pressure boosting, cooling water, and general industrial pumping duties.

Built for continuous-duty operation, the DF6-2-1/2 Series provides the performance capabilities needed for larger systems while maintaining the space-saving advantages of a close-coupled pump design.

Key Features

• Close-coupled end suction centrifugal pump design

• Compact footprint for efficient equipment room installation

• Four-position casing for flexible discharge orientation

• Back pull-out construction simplifies maintenance and service

• Enclosed impeller designed for efficient hydraulic performance

• Mechanical shaft seal for dependable leak protection

• Stainless steel shaft for durability and corrosion resistance

• Factory tested for performance and reliability

• Available in multiple material construction options

• Continuous-duty motor design for demanding applications

Performance and Connection Sizes

The DF6-2-1/2 Series is engineered for higher-capacity applications where flow, reliability, and installation flexibility are critical.

Performance Highlights

• Capacities up to 300 GPM

• Heads up to 125 feet

• Horsepower ranges from 1 HP to 10 HP

• 3" NPT suction connection

• 2-1/2" NPT discharge connection

• Maximum liquid temperatures up to 225°F

• Inlet pressures up to 100 PSI

• Casing working pressures up to 200 PSI

• Available in 3450 RPM configurations

• Single-phase and three-phase motor options available

The oversized 3-inch suction connection allows for smooth fluid entry and improved hydraulic efficiency, while the 2-1/2-inch discharge connection supports higher flow rates for demanding commercial and industrial applications.

NPT Threaded Connections

The DF6-2-1/2 Series utilizes NPT threaded suction and discharge ports, providing a practical and economical solution for a wide range of pumping systems.

Benefits of NPT Connections

• Lower installation costs

• Simplified piping modifications

• Compact system footprint

• Easy pump replacement and servicing

• Ideal for packaged equipment and OEM systems

• Reduced installation complexity

Designed for Easy Maintenance

The DF6-2-1/2 Series features a maintenance-friendly back pull-out design that allows access to the rotating assembly without disconnecting system piping. This reduces downtime and helps simplify seal replacement, inspections, and routine maintenance.

The four-position casing design adds installation flexibility by allowing discharge orientation to match system layouts.

Durable Construction

Designed for long service life in demanding environments, the DF6-2-1/2 Series incorporates durable materials and precision-manufactured components throughout the pump assembly. The enclosed impeller provides efficient, vibration-free operation, while the stainless steel shaft helps protect against corrosion and wear.

Available material configurations may include:

• Bronze-Fitted Cast Iron

• All Bronze

• All Iron

These options allow the pump to be matched to the specific fluid and operating conditions of the application.

Typical Applications

• HVAC heating and cooling systems

• Chilled water circulation

• Cooling tower operation

• Water transfer and distribution

• Booster systems

• Irrigation applications

• Commercial building services

• Industrial process water

• Manufacturing facilities

• OEM equipment packages

• General fluid handling operations

Why Choose the Burks DF6-2-1/2 Series?

The Burks DF6-2-1/2 Series delivers an ideal combination of flow capacity, compact design, and dependable performance. With capacities up to 300 GPM, horsepower options up to 10 HP, and large 3" × 2-1/2" NPT connections, these pumps provide a reliable solution for commercial and industrial fluid-handling applications. Designed for easy maintenance and long-term durability, the DF6-2-1/2 Series offers exceptional value for facilities that require efficient, continuous-duty performance.