GB-1-1 / 2F

Burks GB Series In-Line pumps are efficient, close-coupled Centrifugal designed for long life service on heating and air conditioning systems, pressure boosting, liquid transfer and general industrial applications. Available in motor sizes from 1/3 to 2 HP, with capacities to 80 GPM and heads to 110 feet, these versatile pumps install in any position, horizontal, vertical or at any angle. They are available in Bronze Fitted, All Iron or All Bronze construction. Standard pumps are supplied with open drip-proof motors. Three phase, totally enclosed or explosion proof motors are available to meet a variety of applications. The easy to service back pullout design allows quick removal of pumping assembly without disturbing piping; this saves costly fittings, installation time, and floor space.

Burks GB-1-1/2F Series Vertical Inline Centrifugal Pumps

Space-Saving Design for HVAC, Booster, and Water Circulation Systems

The Burks GB-1-1/2F Series vertical inline centrifugal pumps are designed to provide reliable performance in heating and cooling systems, pressure boosting applications, liquid transfer operations, and general industrial service. Featuring a compact inline design and close-coupled construction, these pumps help reduce piping complexity while minimizing mechanical room footprint.

Engineered for continuous-duty operation, the GB-1-1/2F Series offers efficient hydraulic performance, installation flexibility, and simplified maintenance, making it an excellent choice for commercial buildings, OEM systems, institutional facilities, and industrial applications.

Key Features

• Vertical inline centrifugal pump design

• Compact close-coupled construction

• Flanged suction and discharge connections

• Can be installed horizontally, vertically, or at an angle

• Back pull-out design simplifies maintenance

• Enclosed bronze impeller for efficient hydraulic performance

• Self-adjusting mechanical shaft seal

• Stainless steel motor shaft for corrosion resistance

• Replaceable casing wear ring helps extend pump life

• Factory tested for quality and performance

• Available in bronze-fitted, all-bronze, and all-iron construction

Performance and Connection Sizes

The GB-1-1/2F Series is ideal for low- to medium-flow applications requiring dependable circulation and pressure performance.

Performance Highlights

• Capacities up to 80 GPM

• Heads up to 110 feet

• Horsepower ranges from 1/3 HP to 2 HP

• 1-1/2" flanged suction connection

• 1-1/2" flanged discharge connection

• Maximum liquid temperatures up to 225°F

• Inlet pressures up to 100 PSI

• Casing working pressures up to 200 PSI

• Available in 3500 RPM configurations

• Single-phase and three-phase motor options available

The matched 1-1/2-inch flanged inlet and outlet connections simplify piping layouts while providing reliable flow performance for recirculation, boosting, and transfer applications.

Advantages of Flanged Connections

Unlike threaded piping systems, flanged connections provide a more robust installation for HVAC and commercial pumping applications.

Benefits of Flanged Connections

• Easier pump alignment during installation

• Improved support for connected piping systems

• Faster maintenance and equipment replacement

• Reduced stress on pump connections

• Enhanced reliability in continuous-duty applications

• Ideal for commercial mechanical rooms and institutional facilities

Designed for Easy Maintenance

The GB-1-1/2F Series incorporates Burks' proven back pull-out design, allowing maintenance personnel to remove the pumping assembly without disconnecting piping. This reduces maintenance time, lowers labor costs, and minimizes system downtime.

The inline design also helps save valuable floor space compared to traditional end suction pump arrangements.

Durable Construction

Built for long-term reliability, the GB-1-1/2F Series utilizes precision-machined components and quality materials throughout the pump assembly. The enclosed bronze impeller provides smooth, efficient operation, while the stainless steel shaft and mechanical seal system help ensure dependable service life.

Available material configurations include:

• Bronze-Fitted Cast Iron

• All Bronze

• All Iron

Typical Applications

• HVAC heating systems

• Chilled water circulation

• Hot water recirculation

• Pressure boosting systems

• Commercial building services

• Schools and universities

• Hospitals and healthcare facilities

• OEM equipment packages

• Industrial process water

• General liquid transfer applications

Why Choose the Burks GB-1-1/2F Series?

The Burks GB-1-1/2F Series combines the space-saving benefits of a vertical inline pump with proven Burks reliability and easy maintenance. With capacities up to 80 GPM, heads up to 110 feet, horsepower options from 1/3 to 2 HP, and durable 1-1/2" flanged connections, this series provides an efficient and dependable solution for HVAC, circulation, and commercial water-handling applications.