Expansion joint flanged type ZKB DN65 149B12555C

Flexible coupling – vibration and noise reduction in installations

This rubber-flanged coupling of the ZKB type, made of EPDM and galvanized steel, is a key solution in installations requiring vibration damping, compensation of movements and noise reduction. Its construction allows for the absorption of vibrations generated during operation of devices, protecting pipelines and installation elements from damage. This ensures the system operates quieter and more efficiently.

Construction and application

The ZKB coupling is widely used in heating, ventilation, air conditioning systems and industrial installations. It serves to compensate for thermal expansion of pipelines, as well as to isolate vibrations generated by pumps, fans or other equipment. Made of high-quality materials – an EPDM body and galvanized steel flanges – it ensures durability and reliability even in harsh working conditions. The flanges are drilled according to PN10 and PN16 standards, which facilitates installation and integration with existing infrastructure.

Key features and benefits

• Vibration damping: Reduces the transmission of vibrations to the building structure or other installation elements, minimizing noise and potential damage.
• Movement compensation: Absorbs expansion and contraction of pipelines caused by temperature changes, preventing stress and cracking.
• Noise reduction: Reduces the noise level generated by the flowing medium and the operation of equipment.
• Protection against current conduction: Rubber insulation prevents the conduction of electric currents, increasing installation safety.
• Durability and reliability: The use of high-quality materials guarantees long life and corrosion resistance.
• Easy installation: Flanges drilled according to PN10/PN16 standards facilitate integration with existing pipeline systems.
• Wide temperature range: Possibility of operation at a temperature of up to 95°C (check the temperature/pressure chart).
• High pressure resistance: Pnom 1.6 MPa ensures safe operation in various conditions.

Remember to install the coupling correctly – the screws securing the flanges should be threaded outwards from the coupling (heads towards the rubber bellows). The tightening torque of the screws should be a maximum of 60 Nm for diameters up to DN80 inclusive and 80 Nm above DN80. Store the coupling in a flat position, avoiding moisture and extreme temperatures.