Selecting and Measuring Expansion Joints
For information about selecting pipe size, see Selecting and Measuring Pipe & Fittings.
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Expansion Joints with Flanged Ends
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These joints reduce stress, vibration, and noise in piping systems by providing a point of flexibility to absorb movement. The flanged ends rotate for easy bolt hole alignment during installation. They mate with a same-size flat-surface Class 150 flange without the need for a gasket. Joints have a flexible body that is reinforced with nylon for added strength.
Position the expansion joints as close as possible to anchor points. Attach limit rod sets (sold separately) to the flanges to prevent overextension where anchoring is insufficient. To accommodate the thickness of the limit rod mounting plate, use bolts that are 7/8" longer than the bolts connecting the expansion joint to the pipe flange. Each set of limit rods requires eight bolts (not included).
For technical drawings and 3-D models, click on a part number.
- For Use With: Nonabrasive Slurry, Water
- Temperature Range: -10° to 220° F
- Maximum Pressure: 220 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
Expansion Joints | |||||||||||||
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Distance | Limit Rod Sets | ||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | Pair | ||
5" | 1 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 1/2"-13 | 0000000 | 000000 | 0000000 | 0000000 |
6" | 2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 00000 | 0000000 | 000000 |
7" | 2 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
9" | 4 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
10" | 5 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
11" | 6 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
13 1/2" | 8 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
16" | 10 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 7/8"-9 | 0000000 | 000000 | 0000000 | 000000 |
19" | 12 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 7/8"-9 | 0000000 | 000000 | 0000000 | 000000 |
Expansion Joints | |||||||||||||
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Distance | Limit Rod Sets | ||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | For Bolt Dia. | Each | Pair | ||
5" | 1 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8" | 0000000 | 000000 | 0000000 | 0000000 |
6" | 2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 00000 | 0000000 | 000000 |
7" | 2 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 00000 | 0000000 | 000000 |
7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
9" | 4 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
10" | 5 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
11" | 6 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
13 1/2" | 8 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
16" | 10 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 0000000 | 000000 | 0000000 | 000000 |
19" | 12 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 0000000 | 000000 | 0000000 | 000000 |
Expansion Joints with Sealing Flanged Ends for Metal Pipe
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Because the flanges are molded into the body for a wide sealing surface, these joints provide a tighter seal than other expansion joints. Each flange is supported by a zinc-plated steel plate. Flanges mate with a same-size flat-surface Class 150 flange without the need for a gasket. Joints reduce stress, vibration, and noise in metal piping systems by providing a point of flexibility to absorb movement. They have a flexible body that is reinforced with cord for added strength.
Mount these expansion joints as close as possible to anchor points. Attach limit rod sets (sold separately) to the flanges to prevent overextension where anchoring is insufficient. To accommodate the thickness of the limit rod mounting plate, use bolts that are 7/8" longer than the bolts connecting the expansion joint to the pipe flange. Each set of limit rods requires eight bolts (not included).
For technical drawings and 3-D models, click on a part number.
- For Use With: Grain Alcohol, Nonabrasive Slurry, Water
- Temperature Range: -20° to 220° F
- Maximum Pressure: 190 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
Expansion Joints | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance | Limit Rod Sets | ||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | Pair | ||
6" | 2 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 0000000 | 0000000 | 0000000 |
7" | 2 1/2 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
7 1/2" | 3 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
9" | 4 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
11" | 6 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
13 1/2" | 8 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
Expansion Joints with Flanged Ends for High Vibration
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![](/prerenderstable/mvPRE/contents/gfx/imagecache/681/6819k62-@halfx_636994878672900125.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/681/6819k73-@halfx_cvz1i_1716233926.png?ver=imagenotfound)
These expansion joints have a double-bulb design for extra movement and vibration absorption. The flanged ends rotate for easy bolt hole alignment during installation. They mate with a same-size flat-surface Class 150 flange without the need for a gasket. Joints have a flexible body that is reinforced with nylon for added strength.
Attach limit rod sets (sold separately) to the flanges to prevent overextension where anchoring is insufficient. To accommodate the thickness of the limit rod mounting plate, use bolts that are 7/8" longer than the bolts connecting the expansion joint to the pipe flange. Each set of limit rods requires eight bolts (not included).
For technical drawings and 3-D models, click on a part number.
- For Use With: Grain Alcohol, Nonabrasive Slurry, Water
- Temperature Range: -10° to 220° F
- Maximum Pressure: 220 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
Expansion Joints | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance | Limit Rod Sets | ||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | Pair | ||
5" | 1 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 1/2"-13 | 0000000 | 000000 | 0000000 | 0000000 |
6" | 2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
7" | 2 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
9" | 4 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 000000 | 0000000 | 000000 |
10" | 5 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
11" | 6 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
13 1/2" | 8 | 13" | 8 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 0000000 | 000000 | 0000000 | 000000 |
16" | 10 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8"-9 | 0000000 | 000000 | 0000000 | 000000 |
19" | 12 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8"-9 | 0000000 | 000000 | 0000000 | 000000 |
Expansion Joints | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance | Limit Rod Sets | ||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | Pair | ||
5" | 1 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8" | 0000000 | 000000 | 0000000 | 0000000 |
6" | 2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
7" | 2 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
9" | 4 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 000000 | 0000000 | 000000 |
10" | 5 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
11" | 6 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
13 1/2" | 8 | 13" | 8 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8" | 0000000 | 000000 | 0000000 | 000000 |
16" | 10 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 0000000 | 000000 | 0000000 | 000000 |
19" | 12 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 0000000 | 000000 | 0000000 | 000000 |