Twin-Sphere Molded Rubber Expansion Joints (Series AMT)

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AMT Series Twin Sphere Rubber Expansion Joints - Flange x Flange
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AMT Series Twin Sphere Rubber Expansion Joints – Flange x Flange

AMT Series Twin Sphere Rubber Expansion Joints - Flange x Flange-Drawing

FEATURES

  • Applicable for suction and delivery (discharge).
  • Designed for greater compression, elongation, and angular movement than the single sphere expansion joint.
  • Excellent for absorbing thermal expansion and eliminating sound and vibration.
  • Gaskets and packing not required.
  • Good electrical insulator.
  • Absorbs water pulsation and minimizes water hammering.

DIMENSION & ALLOWABLE MOVEMENTS

API Part NumberSizeFace To Face DimensionsAllowable Motion Ratings*
Compression
Allowable Motion Ratings*
Elongation
Allowable Motion Ratings*
Lateral
Allowable Motion Ratings*
Angular
Installation Tolerances
Compression
Installation Tolerances
Elongation
Installation Tolerances
Lateral
Installation Tolerances
Angular
AMT201H1-1/2"7"1"3/4"1"30⁰1/4"1/8"5/16"10⁰
AMT2022"7"1"3/4"1"30⁰1/4"1/8"5/16"10⁰
AMT202H2-1/2"7"1"3/4"1"30⁰1/4"1/8"5/16"10⁰
AMT2033"7"1"3/4"1"30⁰1/4"1/8"5/16"10⁰
AMT2044"9"1-3/8"1"1-1/4"30⁰1/4"1/8"5/16"10⁰
AMT2055"9"1-3/8"1"1-1/4"30⁰1/4"1/8"3/8"10⁰
AMT2066"9"1-3/8"1"1-1/4"30⁰1/4"1/8"3/8"10⁰
AMT2088"13"1-3/4"1"1-1/2"30⁰1/4"1/8"1/2"10⁰
AMT21010"13"1-3/4"1"1-1/2"30⁰1/4"1/8"1/2"10⁰
AMT21212"13"1-3/4"1"1-1/2"30⁰1/4"1/8"1/2"10⁰
AMT21414"13-3/4"1-3/4"1-1/4"1-1/2"20⁰1/4"1/8"5/16"10⁰
AMT21616"13-3/4"1-3/4"1-1/4"1-1/2"20⁰1/4"1/8"5/16"10⁰
AMT21818"13-3/4"1-3/4"1-1/4"1-1/2"20⁰1/4"1/8"5/16"10⁰
AMT22020"13-3/4"1-3/4"1-1/4"1-1/2"20⁰1/4"1/8"5/16"10⁰
AMT22424"13-3/4"1-3/4"1-1/4"1-1/2"20⁰1/4"1/8"1/2"10⁰
*– Non Concurrent Ratings.

Warning: Do NOT elongate rubber expansion joints when installing for suction service.

OPERATING CONDITIONS

Size Range1-1/2” - 12”14” - 24”
Operating Pressureup to 214 psiup to 114 psi
Operating Temp. Range*14⁰-170⁰ F (Neoprene)
14⁰-210⁰ F (EPDM)
14⁰-170⁰ F (Neoprene)
14⁰-210⁰ F (EPDM)
Burst Pressure853 psi340 psi
Vacuum Rating*Contact API SalesContact API Sales

* – Warnings:
a. Pressure ratings listed in the above table are for up to 110 Degrees F (for Neoprene), and 125 Degrees F (for EPDM). For elevated temperature service, please contact API Sales for actual working pressure ratings.
b. Limit rods are required in systems that are unanchored and recommended in all other applications.

MATERIALS

PartPart DescriptionMaterial
1FlangesMild Steel - Plated
2Reinforcement FabricNylon
3Reinforcing WireMild Steel
4TubeSynthetic Rubber
5CoverSynthetic Rubber
6Root RingMild Steel Plated

APPLICATIONS

  • Pressure piping systems in building equipment and general industrial plants.
  • Pump and turbine lines used for power generation plants, industrial machinery and universal pump blowers.
  • Feed-water & drainage lines for waterworks & sanitary piping systems.
  • Pipelines for industrial plants and shipbuilding yards.

Note: Customized for flanges ANSI-150, ANSI-300 and DIN

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