What is a fabric non metallic expansion joint? (textile)

An expansion joint made from textile fibres is a flexible element. It belongs to the category of the non-metallic expansion joints.

Because of the specific composition of the individual layers, fabric expansion joints are not suitable for installation on lines that carry liquids. They are only suitable when fluids are in a gaseous state.

They can withstand extremely high temperatures, even over 1000°C. Contrary to metal and rubber expansion joints, fabric expansion joints are extremely flexible and their rigidity value is unimportant.

A fabric expansion joint is made of one or more layers of different nature, each of which performs a specific task. Some materials are designed to withstand temperature, others are designed to resist corrosion caused by the process fluid, and others retain pressure.

Overlaying and combining of different layers obtains a stratification that has properties suitable for specific project conditions. It is therefore an extremely versatile component.

What is the use of a fabric non metallic expansion joint? (textile)

When properly inserted in a pipe system, the fabric expansion joint distorts and adapts to variations in pipe dimensions caused by thermal expansion.

It can also be used as a connecting element between equipment and a pipe to which it is connected, in order to avoid “rigid interfaces” that are potentially dangerous for the equipment.

Type Non Mettalic Expansion Joints


  • 10F for temperatures up to 100 °C
  • 12F for temperatures up to 120 °C
  • 20F for temperatures up to 200 °C


  • 25E for temperatures up to 250 °C
  • 30E for temperatures up to 300 °C
  • 40E for temperatures up to 400 °C
  • 55E per temperature fino a 550 °C


  • 25S for temperatures up to 250 °C
  • 30S for temperatures up to 300 °C
  • 40S for temperatures up to 400 °C
  • 55S for temperatures up to 550 °C
  • 75S for temperatures up to 750 °C
  • 100S for temperatures above 1000 °C

PT Glass

  • FILM or LFP for temperatures up to 300 °C


  • Expansion Joints for turbine discharge (see page 16)


  • Expansion Joints in fluoroelastomeric Viton-B ™ (see page 20)

Dog Bone Joint

  • Elastomeric expansion joints for connection between condenser and turbine (see page 21)

Pipe penetration Joint

  • Pipe penetration fabric expansion joints (see page 18)

The joints of Ecoflex and Steelflex series can be supplied in the following variants:

  • US for applications in the absence of corrosive agents (cold junction, if delivered open)
  • YS in the presence of medium acid attack (cold junction, if delivered open)
  • X & XT for applications with high acid attack (Hot Thermowelding through “heat sealer” tooling, if delivered open)

We can supply expansion joints for any other industry that works with temperatures over 1400°C and pressures up to 100 kPa”. Supplied open, closed, in bundles, whether circular, rectangu- lar, conical, or virtually any other shape.

BBV Tech uses the very latest design and research technologies in the field of textile expansion joints in order to satisfy the requirements of an ever-increasing number of qualified customers.

BBV Tech guarantees that all the textiles used in the manufacture of the joints are “ecologically sound” and completely free of asbestos.

expansion joint non metallic

BBV Tech offers multilayer textile expansion joints for use in:

  • thermoelectric and nuclear power plants

  • boiler plants

  • gas turbines

  • refineries

  • FCC plants

  • off-shore

  • steel plants, foundries and furnaces

  • cement factories and ceramic manufacturing companies

  • chemical companies and refineries

  • rock wool and glass manufacturing companies

  • ship yards

  • paper mills

  • air and gas purification plants

  • urban and industrial solid waste incinerators and treatment plants

  • deSOx and deNOx systems

  • industrial fume treatment plants

  • energy saving plants

  • painting plants

  • urban and industrial teleheating systems

  • pharmaceutical plants

  • processing plants for the agroindustrial sector

  • waste water treatment plants

  • automotive, railway and naval companies

  • fume exhaust units

  • heating and air-conditioning plants

  • cogeneration plants

  • desalination plants