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Rubber Expansion Joint

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Keyser Rubber Expansion Joints

Product Description and Advantages

Construction Details

Basic Spool Type Expansion Joints

Single Sphere Connectors

Twin Sphere Connectors

Elbow Connectors

More Rubber Expansion Joint Products


Basic Spool Type Expansion Joints

  Single Arch Type
  ¥ Fabric & rubber construction
  ¥ Reinforced with metal/wire rings
  ¥ Full face flanges integral with joint body
  ¥ Flanges drilled to companion bolt pattern
  ¥ Gaskets not required
 
  Multiple Arch Type
  ¥ Allows greater movement compared to single arch type joints
  ¥ The minimum joint length is dependent on the number of arches
  ¥ For maximum stabilty, 4 arches is recommended
 
  Offset Type
  ¥ Can be customised to specific requirements
  ¥ Initial misalignment and non-parallelism of piping axis will be compensated.
 
  Sleeve Type
  ¥ This type has the same design as the single arch type. The only difference is that the sleeve ends have an I.D. equal to the pipe O.D.
  ¥ Clamps are used to secure the ends
  ¥ Only recommended for low pressure service only
 
Taper Reducer Type
  ¥ Able to connect different piping
  ¥ May be customised according to specific requirements.
  ¥ Tapers of 15 or less are recommended.
  ¥ Pressure ratings are based on larger I.D.
  ¥ Available with and without arches

Movements In Industrial Piping

  Axial Compression
  ¥ Longitudinal movement shortens face to face dimension along axis of expansion joint/flexible coupling
  ¥ Pipe flanges remain perpendicular to axis
 
  Axial Extension
  ¥ Longitudinal movement shortens face to face dimension along axis of expansion joint/flexible coupling
  ¥ Pipe flanges remain perpendicular to axis
 
  Torsional Movement
  ¥ Rotation of one flange with stationary counterpart
  ¥ Simultaneous rotation of both flanges in opposing motion
 
  Lateral/Transverse Movement
  ¥ Offset movement of one both pipe flanges
  ¥ Both flanges remain parallel to each other while forming angle to axis of joint
 
  Angular Movement
  ¥ Deflection/rotation of one or both flanges
  ¥ Angle with axis of expansion joint/flexible coupling is formed Vibration
  ¥ By definition, this is the oscillating movement around axis of expansion
 
  Joint/Flexible coupling
  ¥ Pipe flanges remain parallel with each other
  ¥ Flanges remain perpendicular to axis
  ¥ Mechanical vibration in steel piping system reduced with installation of pipe connection of pipe connectors/expansion joints

Keyflex product

KEYFLEX Expansion Joints are designed and manufactured in accordance with the EJMA Standards and Requirements, which are recognized throughout the world. SINGLE Expansion Joint from size 50-200 above.

Engineering Division Product

Keyser has successfully widened its specialties into piping fabrication, pipe laying and machining field as the Welding & Machining Specialist with the Welding Procedure Specifications (WPS) acquired in accordance to the ASME Standards and DNV rules.