AMT Series Twin Sphere Rubber Expansion Joints – Flange x Flange
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 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| AMT201H | 1-1/2" | 7" | 2" | 1-1/8" | 1-3/4" | 35⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT202 | 2" | 7" | 2" | 1-1/8" | 1-3/4" | 35⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT202H | 2-1/2" | 7" | 2" | 1-1/8" | 1-3/4" | 35⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT203 | 3" | 7" | 2" | 1-3/8" | 1-3/4" | 35⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT204 | 4" | 9" | 2" | 1-3/8" | 1-9/16" | 35⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT205 | 5" | 9" | 2" | 1-3/8" | 1-9/16" | 30⁰ | 1/4" | 1/8" | 3/8" | 10⁰ |
| AMT206 | 6" | 9" | 2" | 1-3/8" | 1-9/16" | 30⁰ | 1/4" | 1/8" | 3/8" | 10⁰ |
| AMT208 | 8" | 13" | 2-3/8" | 1-3/8" | 1-3/8" | 30⁰ | 1/4" | 1/8" | 1/2" | 10⁰ |
| AMT210 | 10" | 13" | 2-3/8" | 1-3/8" | 1-3/8" | 30⁰ | 1/4" | 1/8" | 1/2" | 10⁰ |
| AMT212 | 12" | 13" | 2-3/8" | 1-3/8" | 1-3/8" | 20⁰ | 1/4" | 1/8" | 1/2" | 10⁰ |
| AMT214 | 14" | 13-3/4" | 1-9/16" | 1-1/8" | 1-1/8" | 20⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT216 | 16" | 13-3/4" | 1-9/16" | 1-1/8" | 1-1/8" | 20⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT218 | 18" | 13-3/4" | 1-9/16" | 1-1/8" | 1-1/8" | 20⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT220 | 20" | 13-3/4" | 1-9/16" | 1-1/8" | 1-1/8" | 20⁰ | 1/4" | 1/8" | 5/16" | 10⁰ |
| AMT224 | 24" | 13-3/4" | 1-9/16" | 1-1/8" | 1-1/8" | 20⁰ | 1/4" | 1/8" | 1/2" | 10⁰ |
Warning: Do NOT elongate rubber expansion joints when installing for suction service.
OPERATING CONDITIONS
| Size Range | 1-1/2” - 12” | 14” - 24” |
|---|---|---|
| Operating Pressure | up to 214 psi | up to 114 psi |
| Operating Temp. Range* | 14⁰-170⁰ F (Neoprene) 14⁰-210⁰ F (EPDM) | 14⁰-170⁰ F (Neoprene) 14⁰-210⁰ F (EPDM) |
| Burst Pressure | 853 psi | 340 psi |
| Vacuum Rating* | Contact API Sales | Contact 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
| 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 |
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