How to Custom-Made the Rubber Flanged Bellows Expansion Joint?

2018-02-24 10:29:00
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Summary :Rubber flanged bellows expansion joints are differed in rubber material, flange material, connection methods and rubber sphere quantity. Do you know how to custom-made the rubber flanged bellows expansion joints according to the specific working condition?

Rubber flanged bellows expansion joints are differed in rubber material, flange material, connection methods and rubber sphere quantity... These models apply to different application sites. Do you know how to custom-made the rubber flanged bellows expansion joints according to the specific working condition? The most important thing is figure out following questions:Where is the rubber joint used and how to choose?

rubber joint

rubber expansion joint

Where is the rubber joint used?

Rubber Expansion joints or Rubber bellows are primarily used to absorb noise and thermal movements along with the removal of vibration between equipment such as diesel engines, cooling water pumps, condensers, chillers and their mating pipe work. Their high flexibility also makes them suitable for compensating small installation misalignments. Rubber bellows can be used just like a metal expansion joint to compensate for axial, lateral or angular movement. As with any other unrestrained expansion joint, rubber bellows will extend under pressure. Their pressure thrust varies with length as the shape of the bellows changes, however the forces involved are just as large and the pressure thrust should be calculated by multiplying the cross sectional area by the maximum pressure. To prevent the bellows from extending, Tie rods should be fitted or the pipe work needs to be anchored well.

bellows expansion joint

rubber flanged bellows expansion joints

How to choose rubber joint?

How many rubber sphere do you need? The options are single sphere, double sphere, triple sphere and multiple sphere rubber flanged bellows expansion joints.

What forming process do you prefer? Mould pressing or hand-built spool type?

What’s the installation length of rubber expansion joint? You need to calculate the distance between two pipelines that need to be connected.

What’s the working pressure of rubber expansion joint? From PN0.25 to PN3.0 or more.

What’s the flowing media within pipeline? Commonly seen medium including drinking water, waste water, seawater, hot steam, petroleum, limestone slurry, hydrochloric acid, sulfuric acid, pulp, etc..

What’s the working temperature of rubber flanged bellows expansion joint? Select form -40℃ to 180℃.

What’s the flange material? Choosing from Q235, SS400, St37.2, A105, SS304, SS316, SS310, S321, casting, steel or ductile cast iron.

What’s the flange standard? Choosing from ANSI B16.5, DIN2501, ISO7005.1, ISO7005.2. BS4504, EN1092, JIS, etc..

What’s the rubber material of rubber expansion joint? Choosing form NR, CR, NBR, EPDM, IIR, FKM, PMQ, GAS and so on.

What material do you prefer for the reinforcement layer? Cord fabric or steel wire?

Other requirements should also be clarified: the location of reinforcement ring, vacuum degree, whether requires limit rod, number of limit rods, whether requires buried protective device, whether requires colored tape and other special requirements.


Please list above answers before make an enquiry, it helps us quickly calculate the price for you. Kindly send the inquiry to [email protected]

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