BRA.F8.100 - rubber expansion joint - flexible element made of NBR

The BRA.F8.100 series includes flanged rubber expansion joints designed for use in heating, ventilation, air conditioning (HVAC), water distribution, and compressed air systems. These joints feature a flexible NBR element reinforced with nylon, mounted between galvanized steel flanges. They accommodate thermal expansion and contraction in piping systems and are suitable for water with up to 50% glycol content. Operating temperatures range from -10°C to +80°C, with a maximum pressure rating of 16 bar.

Available in a range of nominal diameters (DN 32 to DN 400), each model has a specific length dimension to match system requirements. The flanges are rated PN 16 in accordance with STN EN 1092-1 and are compatible with standard flanged connections in industrial and commercial installations.

How to choose

• Select the correct DN size based on the nominal diameter of the connected piping system.
• Ensure the flange type and PN rating (PN 16) match the existing system components.
• Verify that the operating temperature and pressure conditions (max. 16 bar, -10°C to +80°C) align with the application requirements.
• Confirm compatibility with the fluid type, including water with up to 50% glycol content.
• Check the manufacturer’s technical sheet for recommended expansion/contraction values to ensure proper installation and performance.

Frequently asked questions

What is the maximum allowable pressure for BRA.F8.100 expansion joints?
The maximum pressure rating is 16 bar, suitable for most HVAC and water distribution systems.

Can these joints be used with glycol-based fluids?
Yes, they are suitable for water containing up to 50% glycols, making them appropriate for antifreeze applications.

What materials are used for the flexible element and flanges?
The flexible element is made of NBR (nitrile butadiene rubber) reinforced with nylon, while the flanges are constructed from galvanized steel.