Stainless Steel Twin-Sphere Molded Rubber Expansion Joints

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Twin Sphere Molded Rubber Expansion Joints Stainless Steel (Series SAMT)

Stainless Steel Twin-Sphere Molded Rubber Expansion Joints (Series SAMT) are suitable for a range of applications, from industrial plants and waterworks systems to shipyard use. Twin-sphere design offers superior motion absorption capacity to the single-sphere design.

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.

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.

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
SAMT010017.001.500.751.2535⁰0.250.130.3110⁰
SAMT01501.57.002.001.131.7535⁰0.250.130.3110⁰
SAMT020027.002.001.131.7535⁰0.250.130.3110⁰
SAMT02502.57.002.001.131.7535⁰0.250.130.3110⁰
SAMT030037.002.001.381.7535⁰0.250.130.3110⁰
SAMT040049.002.001.381.5635⁰0.250.130.3110⁰
SAMT050059.002.001.381.5630⁰0.250.130.3810⁰
SAMT060069.002.001.381.5630⁰0.250.130.3810⁰
SAMT0800813.002.381.381.3830⁰0.250.130.5010⁰
SAMT10001013.002.381.381.3830⁰0.250.130.5010⁰
SAMT12001213.002.381.381.3820⁰0.250.130.5010⁰
SAMT14001413.751.561.131.1320⁰0.250.130.3110⁰
SAMT16001613.751.561.131.1320⁰0.250.130.3110⁰
SAMT18001813.751.561.131.1320⁰0.250.130.3110⁰
SAMT20002013.751.561.131.1320⁰0.250.130.3110⁰
SAMT24002413.751.561.131.1320⁰0.250.130.5010⁰

*Non Concurrent Ratings.

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

PART NUMBER SCHEME

Part Number SectionOptions
TypeSAMT = Twin Sphere Flanged Expansion Joint (Stainless Steel)
SizeXXXX = Size in inches going out 2 decimal places
Body MaterialNE = Neoprene
EP = EPDM
BN = Buna-N
Flange Material304L = 304L Stainless Steel
316L = 316L Stainless Steel
Class150 = 150# Drilling
300 = 300# Drilling
P16 = DIN PN16 Drilling
ExampleSAMT0200-NE-304L-150 = 2" Twin Sphere Expansion Joint with Neoprene Body and 304L Stainless Steel Flanges with 150# Drill Pattern

OPERATING CONDITIONS

Size Range1.5” - 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:
  • 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.
  • Limit rods are required in systems that are unanchored and recommended in all other applications.

MATERIALS

PartPart DescriptionMaterial
1FlangesStainless Steel
2Reinforcement FabricSynthetic Fiber
3Reinforcing WireMild Steel Strands
4TubeSynthetic Rubber
5CoverSynthetic Rubber
6Root RingMild Steel - Plated
Note: Customized for flanges ANSI-150, ANSI-300 and DIN
AMT Series Twin Sphere Rubber Expansion Joints SS - Flange x Flange-Drawing