Introduction:

Metallic Expansion Compensators are designed to compensate for thermal growth, equipment movement, vibration or pressure pulsation within a piping system whilst containing pressure and the medium running through it.

 

Metallic Expansion Compensators are designed to accommodate movement in the three axis:

Axial Movement

Change in dimensional length of the compensator from its free length in a direction parallel to its longitudinal axis.

Lateral Movement

Displacement of one end of the compensator to the other, in a direction perpendicular to the longitudinal axis.

Angular Movement

Rotational displacement of the longitudinal axis of the compensator toward a point of rotation.

 

Metallic Expansion Joint Advantages:

• Little space required for installation.
• Absorption of movements in multiple directions due to their inherent flexibility.
• They require no maintenance.
• They reduce load and temperature loss to a minimum.

 

Available Configurations	Application (Typical)
Weld Ends	Axial Movements
Fixed Flanges	Axial Movements
Floating Flanges	Axial Movements
Reinforcement Rings	High Pressure Systems
Single Convolution	Heat Exchangers
Tie Rods	To limit over extension
Threaded	Internal or External
Jacketed	For Insulation

 

Materials Of Construction:

Metallic Expansion Joints are available in a variety of materials depending upon the specific application and associated operating conditions.  Consideration must be given to:

• Temperature resistance
• Corrosion resistance
• Mechanical characteristics
• Resistance to fatigue
• Flexibility required

 

Both Circular and Rectangular geometries are available in the following materials choices:

Stainless Steel grades including:

• 304 Stainless Steel
• 304L
• 316
• 316L
• 321

Exotic Inconel and Hastelloy versions are also available.