Metal Expansion Joints

Single Unrestrained

MWA & MFA Series

Description

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.

Features

  • Absorbs axial, lateral, and angular movements
  • Must be properly guided
  • Does not restrain the pressure thrust
  • Requires main and directional anchors
Axial unrestrained expansion joint with welding ends MWA
This type of Expansion Joint is made up of one single bellows provided with welding ends.
Axial unrestrained expansion joint with flanges MFA
This type of Expansion Joint is made up of one single bellows equipped with fixed flanges.
Axial unrestrained expansion joint with external BSP/NPT threads MTE
This type of Expansion Joint is made up of one single bellows fitted with external BSP or NPT threads.
Axial unrestrained expansion joint with internal BSP/MNPT threads MTI
This type of Expansion Joint is made up of one single bellows fitted with internal BSP or NPT threads.
Axial unrestrained expansion joint, quick press MQP type MQP
Quick Press MQP Type Metal Expansion Joints for HVAC (Heating, Ventilating & Air Conditioning) systems.
Axial unrestrained expansion joint with floating flanges MFG
This type of Expansion Joint is made up of one single bellows equipped with floating flanges.

Typical Applications

Axial unrestrained 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.
Axial unrestrained 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
Axial unrestrained 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.
Axial unrestrained 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.

Quality Approvals

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