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Metallic Expansion Compensators

Metallic Expansion Compensators

Metallic Expansion Compensators

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

Inconel and Hastelloy versions are also available.