Metal Expansion Joints

Single unrestrained

MWA, MFA, MFG, MTI, MTE & MQP Series

These expansion joints are made of one single bellows element with end connections.

Regardless of accessories, such as liners and covers, this model absorbs all of the movements in any one length of piping but it is mainly used to absorb axial movements.

It does not restrain pressure thrust so adequate anchors and guides must be provided and they can be used only in piping systems that incorporate correctly designed anchors and pipe alignment guides.

This type of Expansion Joint is made up of one single bellows provided with welding ends.
MWA This type of Expansion Joint is made up of one single bellows provided with welding ends.
This type of Expansion Joint is made up of one single bellows equipped with fixed flanges.
MFA This type of Expansion Joint is made up of one single bellows equipped with fixed flanges.
This type of Expansion Joint is made up of one single bellows equipped with floating flanges.
MFG This type of Expansion Joint is made up of one single bellows equipped with floating flanges.
This type of Expansion Joint is made up of one single bellows fitted with external BSP or NPT threads.
MTE This type of Expansion Joint is made up of one single bellows fitted with external BSP or NPT threads.
This type of Expansion Joint is made up of one single bellows fitted with internal BSP or NPT threads.
MTI This type of Expansion Joint is made up of one single bellows fitted with internal BSP or NPT threads.
Quick Press MQP Type Metal Expansion Joints for HVAC (Heating, Ventilating & Air Conditioning) systems.
MQP Quick Press MQP Type Metal Expansion Joints for HVAC (Heating, Ventilating & Air Conditioning) systems.

Typical Applications

Expansion joint applications. Case 1 diagram
Case 1

The classic case of an Expansion Joint located in a straight section of piping installed between two main anchors.

Expansion joint applications. Case 2 diagram
Case 2

The main anchors are located where pipes change directions in order to consider the straight section as an individual section of piping taking us to case no. 1

Expansion joint applications. Case 3 diagram
Case 3

Owing to the size of the straight section of pipe, the Axial EJs are fitted in a way that they are joined together by an intermediate fixed point, thus forming a single unit, similar to an Axial EJ fitted between two main fixed points.

Expansion joint applications. Case 4 diagram
Case 4

In this case the main fixed point is situated at the intersection where two sections of piping meet.

Features

  • Single unrestrained
  • MFA
  • MWA
  • MFG
  • MTE
  • MTI
  • MQP
Pressure Thrust Restrain
Movements
Axial
Lateral
Single-plane
Multi-plane
Angular
Single-plane
Multi-plane
 
 

Must be properly guided

Requires main and directional anchors