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: Stainless Steel Twin Sphere Molded Rubber Expansion Joints (SAMT 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 |
| SAMT0100 |
1 |
5.00 |
1.50 |
0.75 |
1.25 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0125 |
1.25 |
7.00 |
1.50 |
0.75 |
1.25 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0150 |
1.5 |
7.00 |
2.00 |
1.13 |
1.75 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0200 |
2 |
7.00 |
2.00 |
1.13 |
1.75 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0250 |
2.5 |
7.00 |
2.00 |
1.13 |
1.75 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0300 |
3 |
7.00 |
2.00 |
1.38 |
1.75 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0400 |
4 |
9.00 |
2.00 |
1.38 |
1.56 |
35 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT0500 |
5 |
9.00 |
2.00 |
1.38 |
1.56 |
30 |
0.25 |
0.13 |
0.38 |
10 |
| SAMT0600 |
6 |
9.00 |
2.00 |
1.38 |
1.56 |
30 |
0.25 |
0.13 |
0.38 |
10 |
| SAMT0800 |
8 |
13.00 |
2.38 |
1.38 |
1.38 |
30 |
0.25 |
0.13 |
0.50 |
10 |
| SAMT1000 |
10 |
13.00 |
2.38 |
1.38 |
1.38 |
30 |
0.25 |
0.13 |
0.50 |
10 |
| SAMT1200 |
12 |
13.00 |
2.38 |
1.38 |
1.38 |
20 |
0.25 |
0.13 |
0.50 |
10 |
| SAMT1400 |
14 |
13.75 |
1.56 |
1.13 |
1.13 |
20 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT1600 |
16 |
13.75 |
1.56 |
1.13 |
1.13 |
20 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT1800 |
18 |
13.75 |
1.56 |
1.13 |
1.13 |
20 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT2000 |
20 |
13.75 |
1.56 |
1.13 |
1.13 |
20 |
0.25 |
0.13 |
0.31 |
10 |
| SAMT2400 |
24 |
13.75 |
1.56 |
1.13 |
1.13 |
20 |
0.25 |
0.13 |
0.50 |
10 |
*Non Concurrent Ratings.
Warning: Do NOT elongate Rubber Expansion Joints when installing for suction service.
Part Number Structure
| Part Number Section |
Options |
| Type |
SAMT = Twin Sphere Flanged Expansion Joint (Stainless Steel) |
| Size |
XXXX = Size in inches going out 2 decimal places |
| Body Material |
NE = Neoprene
EP = EPDM
BN = Buna-N/Nitrile/NBR |
| Flange Material |
304L = 304L Stainless Steel
316L = 316L Stainless Steel |
| Class |
150 = 150# Drilling
300 = 300# DrillingP10 = DIN PN10 Drilling
P16 = DIN PN16 Drilling |
| Example |
SAMT0200-NE-304L-150 = 2″ Twin Sphere Expansion Joint with Neoprene Body and 304L Stainless 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 |
Stainless Steel |
| 2 |
Reinforcement Fabric |
Synthetic Fiber |
| 3 |
Reinforcing Wire |
Mild Steel Strands |
| 4 |
Tube |
Synthetic Rubber |
| 5 |
Cover |
Synthetic Rubber |
| 6 |
Root Ring |
Mild Steel – Plated |
Note: Customized for flanges ANSI-150, ANSI-300 and DIN
