Non Metallic Flexible Expansion Joints play a vital role in various process industries where Flue Gas, hot air, hot Gas is the medium. They are used for the following purposes.
 

• To accommodate thermal Expansion of the ducts due to temperature
• To accommodate minor duct misalignments and plant settling
• To prevent any vibration getting transferred to the duct from the rotating/ vibrating equipments

Technical Specification:
 

• At Alta Vista, various factors like temperature, pressure, Nature of Medium, Direction of flow, External
• Ambient temperature, Thermal movements / Vibration values, Dust concentration and other specific
• Inputs are analysed and appropriate Non Metallic Flexible Expansion Joints are designed to suit all the above parameters.
• We have developed multilayer fabric flexible expansion joint specially designed to meet the requirements of the applications.

Greater Flexibility:
 

• Axial movement of up to 175 and lateral movement of up to ±80mm are standard..
• Mechanical protection against abrasion for inner sleeve arrangement.
• The temperatures ranging from 50 ºC up to 1200 ºC.
• Options of hot, cold duct designs are possible.
• Choice of materials and composition.
• Fastening or Clamp tightening method.
• Steel frame and quality steel parts.
• Packed Insulation Bolster.
• Design capability to meet any non standard requirements of the customer.

Non Metallic Flexible Expansion Joint are supplied depending on the requirement as follows: 
 

• Complete Unit with Matching Flanges
• Complete unit as welded ends
• Only Fabric Portion (to be installed at site)
• In Split condition (For large sizes)

We design the flow liners (Sleeves) for Non Metallic Flexible Expansion Joint in such a way that the cross section of the ducts is not reduced but the dust ingress into the fabric is minimized. The type of sleeves and the MOC is designed according to the dust concentration present in the medium.