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Manufactured by S&P (Soler and Palau) founded in Spain in 1951 by the engineers Eduard Soler and Josep Palau, this range of painted short cased 2 stage axials are possibly the best performing on the market. This range of Soler and Palau products were formally distributed through Vent Axia known as ​“turbo props”. This range of fans offers the best combination of performance and price available.

Contra rotating: High Pressure

Contra rotating system with two complementary impellers allowing the duplication of the pressure with the same air volume.

Impeller dynamically balanced

Impeller dynamically balanced according

Please note the fan will be 10 – 15% down on performance when used to replace the TP50014 – if fan performance is important please see TCBBx2/​4 – 500

PLEASE NOTE THE TCBBx2/​4 – 500 WILL BE 145mm LONGER IN LENGTH AND THE ORIGINAL SPEED CONTROLLER WOULD NEED UPGRADING TO AN REB 10

What is the TCBBx2/​4 – 500L axial fan?

The Soler & Palau TCBBx2/​4 – 500L is a high-pressure, two-stage short-cased axial fan designed for industrial ventilation systems that require strong airflow performance against high system resistance.

What applications is this S&P axial fan suitable for?

This model is commonly used in industrial ventilation, car parks, tunnel ventilation, plant rooms, smoke control systems and large ducted airflow installations.

What does ​“two-stage” mean on the TCBBx2/​4 – 500L?

A two-stage axial fan uses two impellers in series to generate higher static pressure and improved airflow efficiency, making it suitable for long duct runs or restrictive ventilation systems.

What are the benefits of a short-cased axial fan?

The short case design helps reduce installation space while maintaining high performance, making it ideal for compact plant areas and retrofit ventilation upgrades.

Is the TCBBx2/​4 – 500L suitable for high-resistance duct systems?

Yes. This S&P fan is specifically designed to deliver reliable airflow in high-pressure or high-resistance ventilation networks.

Can the fan be used in commercial and industrial environments?

Yes. The TCBBx2/​4 – 500L is built for heavy-duty industrial and commercial ventilation applications, including continuous operation where robust airflow is required.

Is speed control possible on this axial fan?

In many installations, the fan can be paired with compatible speed control or inverter systems to optimise airflow, energy use and noise levels.

Does the fan support energy-efficient ventilation design?

Yes. High-efficiency impellers and strong pressure performance help maintain airflow while supporting energy-conscious HVAC system design.

How does it compare to single-stage axial fans?

Compared with standard single-stage cased axial fans, the TCBBx2/​4 – 500L typically provides:

• Higher pressure performance for long duct runs

• Improved airflow in high-resistance systems

• Better suitability for commercial kitchen extract

Single-stage axial fans are usually:

• Lower cost

• Simpler to install

• Best suited to short duct or wall-mounted ventilation

How does it compare to other twin-stage axial fans?

Compared with similar contra-rotating axial fans, the TCBBx2/​4 – 500L offers:

• Compact short-cased design for plantroom or canopy installation

• Strong balance of airflow and pressure

• Reliable continuous-duty performance

Alternative twin-stage fans may offer:

• Larger sizes for higher airflow volumes

• Different casing lengths or mounting options

• Specialist temperature or inverter control versions

How does it compare to centrifugal ventilation fans?

Compared with centrifugal extract fans, the TCBBx2/​4 – 500L generally provides:

• Higher airflow efficiency in straight duct systems

• Reduced footprint and easier handling

• A cost-effective high-pressure axial solution

Centrifugal fans are typically preferred for:

• Very high resistance ductwork

• Systems with multiple bends or filtration

• Noise-sensitive installations

What systems is the TCBBx2/​4 – 500L compatible with?

This fan is typically suitable for installation with:

• Spiral and rigid ventilation ducting systems (500 mm diameter)

• Commercial kitchen extract and grease ventilation systems

• Industrial extraction and supply air installations

• Inline mounting within duct runs using flanges or flexible connectors

• Silencers and anti-vibration mounts to reduce noise and vibration

These fans are commonly installed in restaurants, takeaways, workshops and large ventilation networks.

What electrical controls are compatible?

Depending on motor type, the TCBBx2/​4 – 500L can be used with:

• Voltage speed controllers (single-phase models)

• Electronic fan speed controllers

• Variable frequency inverters (three-phase versions)

Single-phase motors are designed for variable voltage speed control, while three-phase motors are suitable for inverter control. 

What accessories are compatible?

Typical compatible installation accessories include:

• Mounting feet and anti-vibration mounts

• Flexible duct connectors

• Matching flanges and silencers

• Ancillary installation kits

These help simplify installation and improve system performance and noise control.

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