Hinged " Metal Expansion Joints"

Description:

These expansion joints are made of one single bellows element fitted with welding ends or flanges plus a system of articulated supports which allow for angular movement in one plane only. The hinge mechanism is designed to accept full pressure thrust.

These units do not allow axial movement however, some types of hinge systems can be provided with holes for the hinge pin that are slotted to allow limited axial displacement. These “slotted hinge” types can not resist the pressure thrust forces and therefore proper anchorage must be provided.

Features:

1-Absorbs angular movements in a single plane
2-Restrains pressure thrust forces
3-Transmits shear and wind loads
4-Supports dead weight
5-Avoid twisting the bellows
6-No main anchors required

Hinged expansion joint with welding ends.

Hinged expansion joint with flanges.

Two Hinged Expansion Joints or one single MWY/MFY double Expansion Joint can be used to absorb the thermal expansion in a Z-shaped section of piping which only occurs in one plane.

In the case of pure angular movement these Expansion Joints can be used to absorb expansion in a specific section of piping.

There is a different angle than 90º in the section of piping.

Single Unrestrained "Expansion Joints"

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:

1- Absorbs axial, lateral, and angular movements
2- Must be properly guided
3- Does not restrain the pressure thrust
4- Requires main and directional anchors

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.

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

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

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 fi

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

Single Tied "Expansion Joints"

Description:

These expansion joints are made of one single bellows element with end connections plus a tie rod system.

Regardless of accessories, such as liners and covers, this model absorbs all types of movements in any length of piping but it is mainly used to absorb axial movements and small amounts of lateral movement.

Features

1- Absorbs axial and small amounts of lateral and angular movements if provided with only 2 tie rods
2- May restrain the pressure thrust