Festo Fittings

High-Performance Festo Fuel Line Fittings for RC Turbine Aircraft

Our collection of Festo Fuel & Air Line Fittings for RC Turbine Systemsi is specifically selected for RC gas turbine applications, providing builders and pilots with dependable solutions for fuel delivery, air systems, and smoke systems.

Designed for compatibility with standard RC turbine setups, these fittings ensure:

• Consistent fuel flow and pressure stability
• Secure connections in high-vibration environments
• Easy installation and maintenance

Whether you're building a new turbine jet or upgrading an existing system, Festo fittings offer the performance and reliability required for high-value RC aircraft.

Festo 4mm Push Connectors, Ball Valves and Barbed Fittings

Perfect for most RC turbine fuel systems, 4mm Festo fittings are widely used for fuel lines, vent lines, and UAT connections.

• Push-to-connect fittings for fast installation
• Ball valves for precise fuel shutoff control
• Barbed fittings for secure tubing connections
• Ideal for compact turbine fuselages

These components provide a balanced combination of flow control, ease of use, and compact design.

Festo 6mm Fittings and Tubing for Larger RC Turbine Systems

For larger turbines and high-flow applications, 6mm Festo fittings and tubing offer increased fuel capacity and efficiency.

• Higher flow rates for large turbine engines
• Reduced restriction in long fuel runs
• Ideal for large-scale jets and high-performance builds
• Compatible with 6mm polyurethane tubing systems

This setup is commonly used when maximum fuel delivery and performance are required.

Why Festo Fittings Are the Standard in RC Gas Turbine Fuel Systems

Festo fittings have become the industry standard in RC turbine jets due to their unmatched reliability and precision manufacturing.

Key advantages include:

• Leak-free sealing technology for safe fuel handling
• Proven performance in industrial and aerospace environments
• Quick, tool-free installation with push-to-connect design
• Long-lasting durability under fuel exposure and vibration

For RC turbine pilots, this means fewer failures, easier maintenance, and confidence in every flight.

Frequently Asked Questions

What are Festo fittings used for in RC turbine jets?

Festo fittings are used to connect fuel lines, air lines, and valves within RC turbine fuel systems. They provide secure, leak-free connections that ensure consistent fuel delivery and reliable engine performance.

What is the difference between 4mm and 6mm Festo fittings for RC aircraft?

4mm fittings are standard for most small to mid-size turbine jets, offering compact installation and sufficient fuel flow.
6mm fittings are used in larger turbines or high-performance systems where increased fuel flow and reduced restriction are needed.

Do I need a check valve in my RC turbine fuel system?

Yes, check valves are often used to prevent fuel backflow and air ingestion, helping maintain consistent fuel delivery and improving overall system reliability. These are most important in our smoke systems. Check valves are not needed typically needed  or recommended in turbine fuel systems.

Are Festo fittings compatible with all RC turbine fuel line diameters?

Festo fittings are designed for specific tubing sizes, most commonly 4mm and 6mm outer diameter tubing. 3mm tubing is now starting to be seen more frequently on turbines that utilize a seperate line for the starting process. These include Kintgech abd Jet Central Turbines. It’s important to match the fitting size to your fuel line for a proper seal.

Can Festo push-fit connectors be reused after removal?

Yes, Festo push-to-connect fittings can typically be reused if they are in good condition. However, always inspect the internal collet and seal to ensure they remain undamaged for safe operation. After multiple removal cycles it is possible for air leaks to start so we must be diligent regarding visual inspection before use.

How do I choose the right Festo fitting for my fuel system layout?

Select fittings based on your tubing size, fuel flow requirements, and layout constraints. Use straight fittings for direct runs, elbows for tight turns, tees for branching lines, and valves for flow control. Proper planning ensures efficient routing and optimal performance.

Examples of various turbine system line requirements:

Kingtech G4+

Most require 6mm OD tubing from the fuel tank to UAT to Pump and 4mm OD fuel line from the pump to the engine. 

Kingtech G5

Same as G4+ with the addition of an additional startup fuel line.

Jet Central 

6mm fuel line from the tank to UAT to the pump. 4mm fuel line from the pump to the turbine on the run outlet of the pump. 3mm for the start up fuel line.

Enjet Turbines

6mm fuel line from the tank to UAT to the pump. 4mm fuel line from the pump to the turbine.

Xicoy Turbines

6mm line from the tank to UAT to pump and 4mm line from the pump to turbine.