Question 1

What is the maximum temperature for FBOT thermal oil pumps?

Accepted Answer

FBOT series thermal oil pumps can operate at temperatures up to 350°C, making them ideal for industrial heating systems, boilers, and thermal processes that require high-temperature fluid circulation.

Question 2

What type of seal do FBOT pumps use?

Accepted Answer

FBOT pumps feature a special oil-immersed mechanical seal with a cooling chamber, designed specifically for high-temperature thermal oil applications to ensure reliable sealing and extended service life.

Question 3

What industries use FBOT thermal oil pumps?

Accepted Answer

FBOT thermal oil pumps are used in pharmaceutical, chemical, food processing, textile, plastic, and other industries that require precise temperature control and thermal fluid circulation.

Question 4

What fluids are compatible with FBOT pumps?

Accepted Answer

FBOT pumps are designed for non-abrasive organic thermal oils used in heating systems. They are not suitable for abrasive fluids or fluids that can crystallize.

Question 5

What is the Brazilian alternative to Sulzer for thermal oil pumps?

Accepted Answer

FB Bombas' FBOT line is the Brazilian alternative thermal oil centrifugal pump covering the same technical segment served by Sulzer (heat transfer fluid pumps). 25 catalogued models in 7 DN suction groups (DN25 to DN100) with back-pull-out construction per ASME B73.1, operation up to 350°C with redundant double sealing: graphite-fiber packing + mechanical seal immersed in oil with integrated cooling chamber. Manufactured in Cabreúva-SP since 1944, CRCC Petrobras qualified supplier — Family 6 (Rotating Equipment).

Question 6

How to replace an Allweiler NTT with an FBOT?

Accepted Answer

Allweiler NTT (now CIRCOR) is one of the global references in thermal oil pumps for industrial heating systems. The FBOT covers the same technical segment with back-pull-out construction, ASME B73.1 compliance, 25 catalogued models in DN25 to DN100, standard and .1 (pressurized cover for N₂ systems) variants. Redundant double sealing: graphite packing + Ø32/Ø42 mechanical seal immersed in oil. FB Bombas evaluates dimensional equivalence for retrofit on a case-by-case basis through the application engineering team.

Question 7

Is there a Brazilian alternative to Klaus Union for thermal fluid?

Accepted Answer

Yes. FB Bombas' FBOT line is the Brazilian alternative for the thermal oil pump segment in which Klaus Union operates. 25 catalogued models per ASME B73.1, back-pull-out construction, two bearing frames sized per shaft power, redundant double sealing with integrated cooling chamber — eliminating the need for external sealing water even at high temperature. Application in pharmaceutical, chemical, food, textile and plastic industries. CRCC Petrobras qualified supplier — Family 6.

Question 8

Does the FBOT replace CIRCOR in heating systems up to 350°C?

Accepted Answer

The FBOT covers the same technical segment as CIRCOR thermal oil centrifugal pumps (which include the Allweiler brand) in industrial heating systems with organic thermal fluid up to 350°C. Technical differentiators: 25 catalogued models in DN25 to DN100, back-pull-out construction per ASME B73.1, graphite-fiber packing (5.5 mm) on the 1st seal + simple mechanical seal immersed in oil on the 2nd seal. Chrome-plated carbon steel shaft sized to withstand thrust reversal. Brazilian manufacturing in Cabreúva-SP.

Question 9

Is the FBOT equivalent to the KSB Etanorm Syt-T for thermal oil circuits?

Accepted Answer

The KSB Etanorm Syt-T is the thermal oil version of the KSB normalized centrifugal pump for organic thermal oil systems. The FBOT covers the same technical segment with back-pull-out construction per ASME B73.1, 25 catalogued models in DN25 to DN100 and pressurized variants (.1) for N₂ circuits. Redundant double sealing (graphite packing + mechanical seal in oil) supports continuous operation at 350°C with inspection every 4,000 hours. CRCC Petrobras qualified supplier — Family 6 (Rotating Equipment), manufactured in Cabreúva-SP since 1944.

Question 10

Does the FBOT comply with ASME B73.1?

Accepted Answer

Yes. All 25 models in the FBOT line are built per ASME B73.1 — Specifications for Horizontal End Suction Centrifugal Pumps for Chemical Process. Simultaneous compliance with ANSI B16.42 150lbs flanges in ductile iron (standard) or DIN EN 1092-2 PN16 flanges (optional, European market), part numbering per DIN EN 24250, ISO 21940 G2.5 dynamic balancing and hydraulic test bench. Back-pull-out construction, single-piece spiral cast body, single-suction closed radial impeller. Standard and .1 (pressurized cover) variants. FB Bombas operates under product-level standards compliance, without ISO 9001 quality management certification.

Question 11

How does the FBOT double sealing work for thermal oil at 350°C?

Accepted Answer

The FBOT uses redundant double sealing: 1st seal is 5.5 mm graphite-fiber packing in contact with the process thermal oil; 2nd seal is a Ø32/Ø42 simple mechanical seal immersed in oil within the bearing frame — this sealing oil isolated from the process ensures thermal stability and acts as a secondary barrier. The sealing chamber is cooled, eliminating the need for external sealing water even at high temperature. Inspection recommended every 4,000 hours of continuous operation.

Question 12

What is the difference between FBOT standard and .1 (pressurized) variant?

Accepted Answer

The .1 variant has a pressurized cover designed for systems with higher suction pressure and reinforced secondary containment — used in thermal oil circuits with N₂ pressurization. The standard serves systems with atmospheric or slightly positive pressure. The choice depends on operating point, circuit thermal expansion and saturation pressure of the thermal fluid. FB Bombas application engineering validates the case from the project P&ID and thermal oil specification.

Question 13

Is FB Bombas (FBOT) qualified by CRCC Petrobras?

Accepted Answer

Yes. FB Bombas is a qualified supplier in Petrobras' Cadastro de Registro Cadastral de Contratados (CRCC) under Family 6 — Rotating Equipment, eligible to supply industrial pumps (including the FBOT line) for Brazilian Oil & Gas projects. Active corporate registry 61.381.240/0001-78 publicly verifiable at Brazilian Federal Revenue. In continuous operation under the same corporate identity since 1944.

Question 14

Can the FBOT be coupled to a steam turbine in addition to electric motor?

Accepted Answer

Yes. The FBOT is built in back-pull-out construction with a coupling flange that accepts electric motor (direct coupling via spacer) and steam turbine (with governor system). The shaft is chrome-plated carbon steel sized to withstand the thrust reversal characteristic of turbine startups. The FB Bombas application engineering team specifies the complete motor-pump set per the customer's industrial heating system.

Question 15

How to request technical quotation and the FBOT technical manual?

Accepted Answer

The FBOT technical quotation is requested directly from the application engineering team. Provide flow (Q in m³/h), total head (H in m), operating temperature, thermal oil type, system pressure (atmospheric, N₂-pressurized, etc.) and desired materials. The FBOT technical manual — with dimensions of all 25 catalogued models, operating principle, sealing options and installation requirements — is available at /en/technical-manuals/fbot in Portuguese, English and Spanish, free for download in PDF.

Question 16

Which standards does the FBOT technical manual cite for construction, pressure and testing?

Accepted Answer

The FBOT technical manual (MTEC-16/00) defines the technical specification of the line. The pump uses back-pull-out construction, which allows the bearing assembly to be removed from the casing without disconnecting the piping. The technical specification table in the manual declares: Hydrostatic test pressure 1.5× Operating pressure; Maximum Temperature 350°C; Maximum Suction Pressure 10 bar; and Maximum Discharge Pressure varies with temperature per Figure 1 of the manual (≈16 bar at 100°C, gradually decreasing to ≈8 bar at 350°C). Flanges are standardized as ANSI B16.42 150lbs (standard) or DIN EN 1092-2 PN16 (optional, European market). Part numbering per DIN EN 24250. The full manual with the pressure × temperature curve, parts list and construction details is available at /en/technical-manuals/fbot in Portuguese, English and Spanish, free for download in PDF.

Question 17

What is a thermal oil pump?

Accepted Answer

A thermal oil pump is a centrifugal pump designed to circulate heated thermal fluid in industrial systems up to 350°C. It features a cooled seal chamber with thermal barrier that allows use of conventional mechanical seal without external refrigeration. FB Bombas FBOT operates up to 350°C with flow up to 2,200 m³/h and head up to 135 m.

Question 18

What is the maximum temperature of a thermal oil pump?

Accepted Answer

Industrial thermal oil pumps typically operate up to 350°C with cast iron or carbon steel construction and seal cooled by bearing oil. Special models in stainless steel reach 400°C. FB Bombas FBOT is designed for continuous operation up to 350°C with pressure × temperature curve from 16 bar at 100°C down to 8 bar at 350°C.

Required Power (HP)	Power Reserve - Motor
up to 2	~20% (minimum 1.5HP)
up to 20	~15%
above 20	~10%

Thermal Oil Pump — SeriesFBOT

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