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Mingchao Fluid Technology

Configuration Guide

Rubber Expansion Joint Types & Configuration Guide

Mingchao manufactures multiple rubber expansion joint configurations for different piping layouts and connection requirements. This guide helps identify the available product types and directs you to the appropriate technical product page.

Engineering boundary

Final configuration should be confirmed against the actual pipe size, connection standard, medium, pressure, temperature, movement requirements and approved project drawing.

Compare by Connection Type

Flanged

KXT

Single Sphere Rubber Expansion Joint

Single-sphere flexible body with flanged connection.

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KST

Double Sphere Rubber Expansion Joint

Double-sphere flexible body with flanged connection.

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Verified configuration

Restrained Rubber Expansion Joint with Tie Rods

Flanged rubber expansion joint with external tie-rod restraint.

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JDX

JDX Concentric Reducing Rubber Expansion Joint

Concentric reducing geometry between different nominal pipe sizes.

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JGD (KXT)

JGD (KXT) Eccentric Reducing Rubber Expansion Joint

Eccentric reducing geometry with flanged connection.

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WTX

WTX 90° Flexible Rubber Expansion Elbow

Flexible 90-degree elbow geometry with flanged ends.

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Threaded

JGD-B

JGD-B Threaded Union Rubber Expansion Joint

Published threaded-union rubber expansion joint identity.

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JGD-B

JGD-B Restrained Threaded Rubber Expansion Joint

Published restrained threaded rubber expansion joint identity with limiting hardware.

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Clamp

JGD (KXT)

JGD (KXT) Clamp-Type Rubber Expansion Joint

Published clamp-type rubber expansion joint identity.

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Compare by Product Geometry

Single Sphere

Single-sphere flexible rubber geometry.

Double Sphere

Double-sphere flexible rubber geometry.

Special Configurations

Restrained

External tie-rod restraint configuration.

High-Pressure Single Sphere

Published KDF high-pressure configuration identity; confirm all operating values on the product page and for the project.

High-Pressure Double Sphere

Published KDF high-pressure configuration identity; confirm all operating values on the product page and for the project.

Vacuum-Resistant

Published vacuum-resistant configuration identity; no rating is asserted in this guide.

PTFE-Lined

Published PTFE-lined configuration requiring medium and operating-condition review.

Buried Protective Cover

Published protective enclosure for a matched rubber expansion joint configuration.

Rubber Expansion Joint Configuration Comparison

ProductModelConnectionGeometry / ConfigurationTechnical Data
Single Sphere Rubber Expansion JointKXTFlangedSingle sphereView Product Data
Double Sphere Rubber Expansion JointKSTFlangedDouble sphereView Product Data
JDX Concentric Reducing Rubber Expansion JointJDXFlangedConcentric reducingView Product Data
JGD (KXT) Eccentric Reducing Rubber Expansion JointJGD (KXT)FlangedEccentric reducingView Product Data
WTX 90° Flexible Rubber Expansion ElbowWTXFlanged elbow90° elbowView Product Data
Restrained Rubber Expansion Joint with Tie RodsFlanged with tie rodsRestrained configurationView Product Data
KDF High-Pressure Single Sphere Rubber Expansion JointKDFFlangedHigh-pressure single sphere identityView Product Data
KDF High-Pressure Double Sphere Rubber Expansion JointKDFFlangedHigh-pressure double sphere identityView Product Data
Vacuum-Resistant Rubber Expansion JointFlangedVacuum-resistant configuration identityView Product Data
JGD (KXT) Clamp-Type Rubber Expansion JointJGD (KXT)ClampClamp-type configurationView Product Data
JGD-B Threaded Union Rubber Expansion JointJGD-BThreaded unionThreaded union configurationView Product Data
JGD-B Restrained Threaded Rubber Expansion JointJGD-BThreaded with limiting frameRestrained threaded configurationView Product Data
PTFE-Lined Rubber Expansion JointFlangedPTFE-lined configurationView Product Data
Buried Protective Cover for Rubber Expansion JointsProtective enclosureBuried protective coverView Product Data

Information to Provide for Project Review

  • DN / NPS
  • Connection or flange standard
  • Working / design pressure
  • Operating temperature
  • Medium
  • Required movement if applicable
  • Material preference
  • Quantity
  • Drawing if available

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