Construction

Introduction :

IDA Expansion joint are made of contour moulded PTFE (white and black) providing exceptional corrosion resistance

and flex-life. The Flexible liner is moulded over the metallic sealing face which eliminates troublesome separate

gaskets and Reduces the chance of bacteria build up. Different number of convolution accommodate varying degree

of misalignment , axial travel and angular deflection between components.

These expansion joint have found  widespread acceptance in the chemical processing industry and commercial

heating and air-conditioning system as pumps connector and at strategic point throughout system. because of

their established record of long service life, they are the economical vibration and sound absorbs available.

They are manufactured with intgeral steel limit bolts and reinforcing rings enablling the bellow to absorbs vibration

and allow the thermale movement and misalignment in piping. They also provide resistance to rotational force

which can lead to joint failure, offering long life in costal, marine , and chlorine rich environments.

The are available in 2,3 and 5 convolution models , with varying amount of allowed  movements.

PTFE expansion joint are capable of handling all of the following movements.

• Angular misalignment – called angular deflection and angular rotation is the displacement of one flange in relation
• to the other causing them to lie in non parallel planes

•   Vibration absorbing movement caused by generators or pump that may result in pipe work cracking.
• Longitudinal- also called travel are axial compression and extension .
• parallel misalignment called offset or lateral deflection, is the displacement of one flange in relation to the other
• while they lei in parallel planes.
• Maximum trevel is based on instalattion with no misalignment or angular deflection
• Combined travel and misalignment are proportionately lower for each type of deflection according to the
• percentage of the “Maximum” that is required for the other

Definition of Movement

ANGULAR DEFLECTION     

Maximum Angular deflection may be called

angular rotation. it is based on installation

with no axial travel or lateral offset.

VIBRATION

In additional to noise, vibration transmitted through piping

can cause leaks premature equipment wear and cracked weld.

Expansion joint drastically reduce vibration transmission ,

thereby solving many of these issues

AXIAL TRAVEL

Maximum axial travel may be called longitudinal

movement or axial compression and extension it is based

on installation with no misalignment or angular deflection

MISALIGNMENT

Maximum misalignment may also be referred to as lateral

offset or deflection. it is based on installation with no axial

travel or angular deflection.