Twin Sphere Molded Rubber Expansion Joints (AMT Series)

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.

 

Specifications: Twin Sphere Molded Rubber Expansion Joints (AMT Series)

ALL DIMENSIONS ARE IN INCHES UNLESS OTHERWISE STATED

API Part Number	Size	Face To Face Dimensions	Allowable 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
AMT0100	1	5.00	1.50	0.75	1.25	35	0.13	0.13	0.13	10
AMT0125	1.25	7.00	1.50	0.75	1.25	35	0.13	0.13	0.13	10
AMT0150	1.5	7.00	2.00	1.13	1.75	35	0.13	0.13	0.13	10
AMT0200	2	7.00	2.00	1.13	1.75	35	0.13	0.13	0.13	10
AMT0250	2.5	7.00	2.00	1.13	1.75	35	0.13	0.13	0.13	10
AMT0300	3	7.00	2.00	1.38	1.75	35	0.13	0.13	0.13	10
AMT0400	4	9.00	2.00	1.38	1.56	35	0.13	0.13	0.13	10
AMT0500	5	9.00	2.00	1.38	1.56	30	0.13	0.13	0.13	10
AMT0600	6	9.00	2.00	1.38	1.56	30	0.13	0.13	0.13	10
AMT0800	8	13.00	2.38	1.38	1.38	30	0.13	0.13	0.13	10
AMT1000	10	13.00	2.38	1.38	1.38	30	0.13	0.13	0.13	10
AMT1200	12	13.00	2.38	1.38	1.38	20	0.13	0.13	0.13	10
AMT1400	14	13.75	1.56	1.13	1.13	20	0.13	0.13	0.13	10
AMT1600	16	13.75	1.56	1.13	1.13	20	0.13	0.13	0.13	10
AMT1800	18	13.75	1.56	1.13	1.13	20	0.13	0.13	0.13	10
AMT2000	20	13.75	1.56	1.13	1.13	20	0.13	0.13	0.13	10
AMT2400	24	13.75	1.56	1.13	1.13	20	0.13	0.13	0.13	10

*Non Concurrent Ratings. Warning: Do NOT elongate Twin Sphere Molded Rubber Expansion Joints when installing for suction service.  

Part Number Structure

Part Number Section	Options
Type	AMT = Twin Sphere Flanged Expansion Joint (Steel)
Size	XXXX = Size in inches going out 2 decimal places
Body Material	NE = Neoprene EP = EPDM BN = Buna-N/Nitrile/NBR
Flange Material	STL = Steel
Class	150 = 150# Drilling 300 = 300# DrillingP10 = DIN PN10 Drilling P16 = DIN PN16 Drilling
Example	AMT0200-NE-STL-150 = 2″ Twin Sphere Expansion Joint with Neoprene Body and Steel Flanges with 150# Drill Pattern

 

Operating Conditions

Size Range	1” – 12”	14” – 24”
Operating Pressure	up to 214 psi	up to 114 psi
Operating Temp. Range*	Neoprene: 14°F- 170°F EPDM: 14°F- 210°F Buna-N/Nitrile/NBR: 14°F- 170°F	Neoprene: 14°F- 170°F EPDM: 14°F- 210°F Buna-N/Nitrile/NBR: 14°F- 170°F
Burst Pressure	853 psi	340 psi
Vacuum Rating*	Contact API Sales	Contact 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.
• Not for use in steam applications.

 

Materials

Part	Part Description	Material
1	Flanges	Mild Steel – Plated
2	Reinforcement Fabric	Nylon
3	Reinforcing Wire	Mild Steel
4	Tube	Synthetic Rubber
5	Cover	Synthetic Rubber
6	Root Ring	Mild Steel Plated