Fabric Expansion Joints

Fabric Compensators, Metal & Rubber Bellows

KMK Compensators Ltd are manufacturers and installers of fabric expansion joints, fabric compensators, fabric bellows, flexible bellows, and expansion bellows.

We are also suppliers of stainless steel and moulded rubber bellows and flexible hoses.


Fabric Compensators

Apart from our standard range of movement joints we also offer bespoke expansion joints individually designed to meet customers requirements. They are manufactured and inspected in accordance with quality procedures as defined by ISO.9001:2015 (Certificate No. Q195/4)

Fabric expansion joint profile 7: Showing the layers


Movement Joint Manufacturers

In all areas of our business; manufacturing and production, sales, technical and on-site services, our combined experience adds up to more than 200 years! Therefore our customers are assured quality and reliability of service.


You will find our works and offices well situated in Bradford, West Yorkshire, to effectively and efficiently service all UK Industry.
KMK Compensators factory

Why are fabric expansion joints important?

Consisting of fabric bellows made from different materials, fabric expansion joints are important where it is necessary to conduct steam and other high temperature gases in pipe systems. Fabric expansion joints are also called fabric compensators.

The series of coils (convolutions) that are the bellow are designed to be flexible to cope with axial, lateral and angular movement while being strong enough to withstand internal pressures of pipes. They are also used to meet anti-vibration and noise absorption requirements.

Non-metallic v. metal expansion joints

A wide variety of industries have enjoyed the advantages provided by non-metallic expansion joints:

Large Movements

The non-metallic joint offers multi-plane movement in a shorter face-to-face dimension. The ability to accommodate axial, lateral (in two planes), torsional and angular movements concurrently is an inherent capability of the non-metallic expansion joint designs.

Low Loads

The spring rates generated by the movements or required to move the expansion joints are very low.

Corrosion Resistance

The non-metallic expansion joint industry’s use of the wide variety of elastomers, fabrics and fluoroplastics allows the selection of the correct materials for each application.  The superior corrosion resistance of various rubbers and fluoroplastics can extend the life of the expansion joint.

Sound and Vibration Elimination

The outstanding vibration and sound attenuation characteristics of elastomers help prevent premature system degradation.

High Temperature

With the use of special materials and designs, non-metallic expansion joints can withstand over 2000˚ F operating temperatures.

Lower System Design Costs

Since non-metallic joints can accommodate movements concurrently, the resultant system cost can be reduced as follows:

  • The total number of expansion joints may be reduced to take
  • advantage of the large, multi-plane movements.
  • The same movements can be derived in shorter face-to-face
  • dimensions compared to metal expansion joints.
  • The system geometry can be simplified.
  • The use of costly toggles, hangers, support structures and guides can be extensively reduced.
  • The engineering time required to design the system is significantly reduced.

Low Material Costs

The use of high alloy metals may not be required to meet the corrosion resistance required by the application. The variety of elastomers and fluoroplastics available will allow the selection of the precise and least expensive material.

Lower Shipping and Installation Costs

The non-metallic expansion joint can be factory pre-assembled and shipped to the job site for ease of installation. The expansion joints are relatively lightweight and can be hoisted into place with a minimum of field assembly required.

No Gaskets Required

Since most installations are either welded into place or use integral flanges, the use of gaskets may not be required. (For those installations utilising metal flanges bolted into place, gaskets will be required).

Lower Replacement Cost

Changing non-metallic expansion joints can be done with the minimum of downtime.  The expansion joint can be provided either factory spliced or open ended for field splicing.

Companies we have supplied and installed for