Characteristics and areas of use

HYDRA expansion joints for gas applications ensure stressfree and safe pipe installation. They absorb system vibrations and movements and thus protect the piping network against damage. Axial expansion joints for gas applications reduce structure-borne sound transmission over the pipeline and avoid vibration and oscillation transmission.

Examples for areas of use

• Drying stoves, gas engines, gas control systems: The absorption of thermal expansion ensures the trouble-free operation of machines
• Gas supply lines or burner supply lines (gas and air): Here, vibrations occurring on all sides are compensated thus ensuring safe and continuous operation.
• Reduction of force and torque transmission in the area of the connection fi ttings

Design and technical data

The expansion joint consists of a multilayered stainless steel bellows. Depending on the relevant case of operation, the bellows is available in the stainless steel materials 1.4571, 1.4541 or 1.4404. The expansion joints are delivered prefinished and assembled with the necessary connectors. The product range includes axial expansion joints with the most current connection fi ttings up to nominal diameter of DN 100.

Quality

HYDRA expansion joints are approved by the DVGW in accordance with DIN EN 30681 for use in the gas industry. Millions of these expansion joints have proven their absolute safety and reliability in practice. HYDRA expansion joints according to DIN EN 30681 with DVGW approval are available in the following nominal diameters:

• Axial expansion joints: DN 15 to DN 500
• Universal expansion joints: DN 150 to DN 500
• Angular expansion joints: DN 50 to DN 500
• Lateral expansion joints: DN 50 to DN 500