Rubber Type Expansion Joints

Expansion joints serve a crucial role in industrial ductwork by facilitating the controlled expansion and contraction of ducts. Their primary function is to accommodate thermal movements within the ductwork system. They mitigate thermally induced stresses by allowing thermal movements in a relatively unrestricted manner. Expansion joints contribute to the overall flexibility and structural integrity of the system which is essential in preventing the build-up of stress that could otherwise lead to damage in equipment, ductwork, and supporting structures.

This is the most installed version of the fabric expansion joints (KOREMA® type A3 or AC3 as well as B3 or BC3). The name »flange-type« is used for expansion joints located between pipe or duct end flanges. For existing plants, the flange design varies according to customers’ requirements or depending on the constructed steel design. For innovative designs KOREMA® will identify the suitable technical and economical solution. Special design: supplied as »open« multilayer expansion joint. On-site service available exclusively from the KOREMA® service team. Insulation is incorporated to protect the expansion joint against abrasion as well as for thermal insulation. The choice of insulating material, either mineral wool or ceramic felt, depends on the design temperature. For operation at or below dew point, a vulcanized elastomeric layer is available. Pre-assembled units, complete with liners and clamp bars, are available.

Penstocks are used to discharge the headwater from a reservoir. Due to thermal and dynamic effects on the pipelines which are usually run underground in the mountain, compensation for expansion is necessary. By fitting an expansion joint, slow creep movements, eccentricity, dilation and also pipe misalignment can be reliably absorbed. The MANOY® system seal WP, type 436, was specially developed for leakagefree operation of an expansion joint.

We produce expansion joints for all industrial sectors to take up vibrations, for noise absorption, or to compensate distortion by axial, lateral or angular movements. Our expansion joints are available in various versions and numerous elastomers variants in inner diameters from 25 mm to 1600 mm. Testing certificates of all well-known testing institutes are at hand. TYPE II Single or multiple flutes with rubber/fabric flange. Various elastomers qualities. ND 32 to ND 1600, Standard length n 250, 300 und 350 mm, Standard pressure stage 10 bar. TYPE V and TYPE VII Single wave with rubber sealing bead. Various elastomers qualities. ND 32 to ND 600. Standard pressure stage 10 bar. TYPE V Standard length 100 mm TYPE VII Standard length 130 mm HKS and HKA Per heating standard DIN 4809. COUPLING EXPANSION JOINT Single or multiple flutes, in various elastomers qualities. ND 25 – ND 750, any length for pressures from –0,8 to +15 bar, with clamping band. RUBBER-METAL PIPE...