Did you know? 1-2 %

Compressed air lines are laid with a fall, one to two percent being usual. Take offs rise from the top so condensate does not run into the consumers.

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Pipes and pipe fittings

Elastomer expansion joints

Elastomer expansion joints with flanged ends for DN 50 to DN 300 in ratings PN 10 and PN 16 to DIN and EN, 65 versions.

The bellows is made from EPDM, NBR or butyl (CIIR) according to the medium; EPDM and NBR are also offered in a high temperature build. The joints are supplied without a shut-off valve. Examples are DN 50 with an EPDM bellows, DN 100 with an NBR bellows in high temperature form and DN 300 with a butyl bellows.

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Buying guide

How to choose Elastomer expansion joints

What matters when choosing: properties, comparison and typical applications.

Technical features

⚡DN 50 to DN 300 - flanged connection to DIN and EN, 65 versions

📏Ratings PN 10 and PN 16 - PN 16 up to DN 175, PN 10 on the large nominal sizes

⚙Bellows materials - EPDM, NBR and butyl (CIIR), EPDM as well as NBR in high temperature form

🔧Build - without shut-off valve, a pure compensating element in the line

Applications

Expansion joints absorb thermal growth, installation offset and vibration between a pump and its pipework.

They are fitted directly downstream of pumps or compressors in heating, cooling and process circuits, decoupling the machine from the pipe network. Material choice follows medium as well as temperature: EPDM for water service, NBR for oil bearing media, butyl for chemically loaded circuits.