The FBE 3/4" external gear pump by FB Bombas handles viscous fluid transfer in industrial applications. It operates at viscosities up to 100,000 SSU and temperatures up to 350°C with a heating jacket. Built in cast iron, carbon steel or stainless steel. Sealed with mechanical seal or packing gland. Brazilian manufacturer with API 676 certification and Petrobras CRCC.
The FBE 3/4" pump is designed for: High flow, Heavy oils, Petrochemical industry. Each application demands specific materials, sealing arrangements and operating conditions that FB Bombas engineers evaluate during the selection process.
The pump body, covers and gears are available in grey cast iron, ductile cast iron, carbon steel or stainless steel 316. Shaft sealing options include single or double mechanical seals, packing gland, or magnetic coupling for zero-leakage requirements. Heating jackets on body and covers allow operation with high-viscosity fluids such as asphalt, molten sulfur, resins and heavy fuel oil.
Consult the flow rate, differential pressure and RPM tables below for correct sizing of the FBE 3/4". FB Bombas provides free technical support for pump selection, including NPSH verification, power calculation and material compatibility analysis. Performance curves are measured on the manufacturer own test bench in Cabreúva, São Paulo, Brazil. Delivery lead time ranges from 12 to 20 weeks depending on materials and accessories.
The FBE 3/4" external gear pump is designed for viscous fluid transfer in high flow, heavy oils, petrochemical industry applications. It operates with viscosity up to 100,000 SSU and temperature up to 350°C (with optional heating jacket). Maximum flow at this diameter is approximately 44 L/min, positioning it as a suitable choice for medium and large-scale operations within the FB series.
The back pull-out design of the FBE 3/4" allows maintenance of the rotor, shaft, bearings and mechanical seal without disconnecting piping or moving the motor — significantly reducing downtime. Construction follows the API 676 (Positive Displacement Pumps) standard and is available in cast iron, carbon steel or 316 stainless steel depending on the processed fluid.
For correct specification of the FBE 3/4", the project engineer must consider the fluid viscosity at operating temperature, required differential pressure, available NPSH in the system and material chemical compatibility. FB Bombas engineering in Cabreúva/SP offers free sizing and issues a detailed data sheet for each project, including a performance curve verified in-house on the test bench.
Maximum flow depends on rotation speed and differential working pressure. Catalog values are obtained on the test bench with reference fluid (SAE 10 oil at 40°C). For more viscous fluids, the correction factor may reduce flow by 5-20%. FB Bombas engineering provides the specific curve for the 3/4" diameter upon request.
Yes. The FBE series operates up to 350°C with a steam or thermal oil heating jacket on the casing and covers. For asphalt, molten resin or liquid sulfur applications, construction is specified with resistant materials and proper sealing (double mechanical seal or gland packing with forced lubrication).
The diameter choice is a function of required flow and fluid viscosity. Smaller diameters operate at higher speeds (up to 1,750 rpm) and are ideal for dosing and low flows. Larger diameters run at lower speeds (300-900 rpm) for very viscous fluids at high flows. See the diameter comparison in the selection guide.
Typical lead times range from 12 to 20 weeks, depending on special materials, accessories (baseplate, motor, heating jacket, seal flush plan) and priority in the production queue. FB Bombas manufactures to order in Cabreúva/SP, with complete FAT (Factory Acceptance Test) documented per API 676.