Model FBEI

Internal Gear Pump FBEIGG1

Internal gear pump — nominal size 1" — compact configuration.

Nominal Size: 1"9 kgDownload FBEI Technical Manual

Model

FBEI GG1

Nominal Size

Approximate Weight

9 kg

Manual Reference

Fig. 11

Configuration: Compact configuration

Technical Dimensions

Dimensions in millimeters per FBEI Technical Manual — FB Bombas

Dimension	Value (mm)
A	1"
B	102
C	70
D	41
E	33
F	102
G	62
H	9
J	24
K	1
L	102
M	17
N	29
O	8
P	16
Q	186
S	29
T	12.70
U	17
W	67
X	10

Source: Official FBEI Technical Manual (Fig. 11) — all dimensions in millimeters. Missing fields do not apply to this configuration.

Construction Features

Per official manufacturer documentation

Operating Principle

Positive displacement — gear within a gear (rotor + idler + crescent)

Sealing Options

Mechanical seal (single or cartridge)
Braided packing with adjustable gland

Heating Jacket (optional)

Steam must not exceed 185°C and/or 10 bar. Thermal fluid limited to 232°C and/or 10 bar (technical manual).

Installation Requirements

Suction filter40–80 mesh

Alignment toleranceradial < 0.05mm · angular < 0.6°

Pre-alignmentYes — performed at factory

Self-primingYes — no foot valve required

ReversibleYes — reversible by rotation direction

Spare Parts (2 years)

Internal gear
Pin
Support and internal gear bushings
Sealing kit (packing or mechanical seal + bearing)

FB Engineer·Technical perspective on this configuration

When to choose the compact configuration

The compact configuration prioritizes space and weight savings — ideal for skids, portable systems and installations where physical space is restricted. Requires external overpressure protection (in-line valve, pressure switch or torque limiter), per the technical manual. Great for applications where reduced dimensions are a priority and the line already has its own protection.

Frequently Asked Questions

Model-specific technical answers based on the official manual

The FBEI GG1 pump has a nominal size of 1" on both suction and discharge, according to the official dimensional table in the FBEI Technical Manual (Fig. 11).

The approximate weight of the FBEI GG1 pump is 9 kg (hydraulic assembly only, excluding motor, coupling and base), per the FBEI Technical Manual. For the total assembly weight including motor and base, contact FB Bombas engineering.

Yes. All pumps in the FBEI series, including the GG1 model, are self-priming — no foot valve required at the suction point. The technical manual recommends installation as close as possible to the suction source, with a 40-80 mesh filter to prevent cavitation.

Yes. The positive displacement principle (internal gear + crescent) allows bidirectional operation. Simply reverse the motor rotation direction to reverse suction and discharge flow.

The FBEI GG1 can be supplied with mechanical seal (single or cartridge) or braided packing with adjustable gland. The choice depends on the fluid and operating conditions — consult FB Bombas engineering for technical recommendation.

Yes. The FBEI GG1 can be supplied with an optional heating jacket for viscous fluids requiring pre-heating. The technical manual defines operating limits: steam up to 185°C and 10 bar, or thermal fluid up to 232°C and 10 bar. The jacket must be heated gradually to prevent thermal shock.

No. In the "compact configuration" configuration, the FBEI GG1 does not have an internal relief valve. The technical manual requires mandatory installation of an external protection system (in-line valve, pressure switch or torque limiter) to prevent overpressure damage.

The FBEI Technical Manual recommends a 40 to 80 mesh filter (depending on model and application) with passage area equal to or greater than the pump suction nozzle — prevents solid particle ingress and extends internal gear service life.

Radial alignment tolerance is under 0.05 mm and angular tolerance is under 0.6°. FBEI pumps leave the factory pre-aligned, but transport and handling can disturb alignment — re-alignment is mandatory after installation on the final base.

Per Section 3 of the FBEI Technical Manual, recommended parts for 2-year operation are: internal gear, pin, support and internal gear bushings, and sealing kit (packing or mechanical seal + bearing). Smaller sizes (1") are typically indicated for dosing, small-volume transfer and auxiliary applications.

The FBEI GG1 is manufactured per API 676 3rd edition (rotary positive displacement pumps for petroleum, chemical and gas). FB Bombas is a Petrobras CRCC qualified supplier Family 6 — Rotating Equipment, with active corporate registry 61.381.240/0001-78 publicly verifiable at the Brazilian Federal Revenue.

Application-Specific Performance

Flow rate, pressure, speed and power are sized for each specific application (fluid, viscosity, temperature, required pressure and available NPSH). Request free technical sizing — technical response after analysis.

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All dimensions and construction information were extracted from the official FB Bombas FBEI Technical Manual. For customized performance specifications, consult the Technical Assistance Department.

Other FBEI Series Models

The FBEI series covers 1" to 4" sizes in three casing configurations. Compare the other models’ dimensions to select the hydraulic assembly that matches your flow and viscosity.