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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
Shown Installed on a Flanged Pipe
Expansion Joint
Limit Rod
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).
Neoprene Rubber
- 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
Threaded Bolt Holes
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 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 1/2"-13 | 9175K32 | 000000 | 9175K82 | 0000000 |
| 6" | 2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 9175K33 | 000000 | 9175K83 | 000000 |
| 7" | 2 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 9175K34 | 000000 | 9175K84 | 000000 |
| 7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 9175K35 | 000000 | 9175K85 | 000000 |
| 9" | 4 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 9175K36 | 000000 | 9175K86 | 000000 |
| 10" | 5 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 9175K37 | 000000 | 9175K87 | 000000 |
| 11" | 6 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 9175K38 | 000000 | 9175K88 | 000000 |
| 13 1/2" | 8 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4"-10 | 9175K39 | 000000 | 9175K89 | 000000 |
| 16" | 10 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 7/8"-9 | 9175K21 | 000000 | 9175K91 | 000000 |
| 19" | 12 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 7/8"-9 | 9175K22 | 000000 | 9175K92 | 000000 |
Unthreaded Bolt Holes
Expansion Joints | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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" | 9175K13 | 000000 | 9175K82 | 0000000 |
| 6" | 2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K14 | 000000 | 9175K83 | 000000 |
| 7" | 2 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K15 | 000000 | 9175K84 | 000000 |
| 7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K16 | 000000 | 9175K85 | 000000 |
| 9" | 4 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K17 | 000000 | 9175K86 | 000000 |
| 10" | 5 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K18 | 000000 | 9175K87 | 000000 |
| 11" | 6 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K19 | 000000 | 9175K88 | 000000 |
| 13 1/2" | 8 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K23 | 000000 | 9175K89 | 000000 |
| 16" | 10 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 9175K24 | 000000 | 9175K91 | 000000 |
| 19" | 12 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 9175K25 | 000000 | 9175K92 | 000000 |
EPDM Rubber
- For Use With: Alcohol, Water
- Temperature Range: -20° to 250° F
- Maximum Pressure: 220 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
Unthreaded Bolt Holes
Expansion Joints | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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" | 9175K52 | 000000 | 9175K82 | 0000000 |
| 6" | 2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K53 | 000000 | 9175K83 | 000000 |
| 7" | 2 1/2 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K54 | 000000 | 9175K84 | 000000 |
| 7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K55 | 000000 | 9175K85 | 000000 |
| 9" | 4 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 9175K56 | 000000 | 9175K86 | 000000 |
| 10" | 5 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K57 | 000000 | 9175K87 | 000000 |
| 11" | 6 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K58 | 000000 | 9175K88 | 000000 |
| 13 1/2" | 8 | 6" | 8 | 3/4" | 1/2" | 1/2" | Single Bulb | Zinc-Plated Steel | 7/8" | 9175K59 | 000000 | 9175K89 | 000000 |
| 16" | 10 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 9175K61 | 000000 | 9175K91 | 000000 |
| 19" | 12 | 8" | 12 | 1" | 5/8" | 3/4" | Single Bulb | Zinc-Plated Steel | 1" | 9175K62 | 000000 | 9175K92 | 000000 |
Expansion Joints with Flanged Ends for High Vibration
Shown Installed on a Flanged Pipe
Expansion Joint
Limit Rod
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).
Neoprene Rubber
- 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
Threaded Bolt Holes
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 | 6819K61 | 0000000 | 6819K72 | 000000 |
| 6" | 2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 6819K62 | 000000 | 6819K73 | 00000 |
| 7" | 2 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 6819K63 | 000000 | 6819K74 | 00000 |
| 7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 6819K64 | 000000 | 6819K75 | 00000 |
| 9" | 4 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 6819K65 | 000000 | 6819K76 | 00000 |
| 10" | 5 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 6819K66 | 000000 | 6819K77 | 000000 |
| 11" | 6 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 6819K67 | 000000 | 6819K78 | 000000 |
| 13 1/2" | 8 | 13" | 8 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 3/4"-10 | 6819K68 | 000000 | 6819K79 | 000000 |
| 16" | 10 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8"-9 | 6819K69 | 000000 | 6819K92 | 000000 |
| 19" | 12 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8"-9 | 6819K71 | 00000000 | 6819K93 | 000000 |
Unthreaded Bolt Holes
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" | 6819K26 | 0000000 | 6819K72 | 000000 |
| 6" | 2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K27 | 000000 | 6819K73 | 00000 |
| 7" | 2 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K28 | 000000 | 6819K74 | 00000 |
| 7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K29 | 000000 | 6819K75 | 00000 |
| 9" | 4 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K31 | 000000 | 6819K76 | 00000 |
| 10" | 5 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K52 | 000000 | 6819K77 | 000000 |
| 11" | 6 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K53 | 000000 | 6819K78 | 000000 |
| 13 1/2" | 8 | 13" | 8 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K54 | 000000 | 6819K79 | 000000 |
| 16" | 10 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 6819K55 | 000000 | 6819K92 | 000000 |
| 19" | 12 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 6819K56 | 00000000 | 6819K93 | 000000 |
EPDM Rubber
- For Use With: Alcohol, Water
- Temperature Range: -20° to 250° F
- Maximum Pressure: 220 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
Unthreaded Bolt Holes
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" | 6819K81 | 0000000 | 6819K72 | 000000 |
| 6" | 2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K82 | 000000 | 6819K73 | 00000 |
| 7" | 2 1/2 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K83 | 000000 | 6819K74 | 00000 |
| 7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K84 | 000000 | 6819K75 | 00000 |
| 9" | 4 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 3/4" | 6819K85 | 000000 | 6819K76 | 00000 |
| 10" | 5 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K86 | 000000 | 6819K77 | 000000 |
| 11" | 6 | 9" | 8 | 2" | 1 3/8" | 1 9/16" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K87 | 000000 | 6819K78 | 000000 |
| 13 1/2" | 8 | 13" | 8 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 7/8" | 6819K88 | 000000 | 6819K79 | 000000 |
| 16" | 10 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 6819K89 | 000000 | 6819K92 | 000000 |
| 19" | 12 | 13" | 12 | 2 3/8" | 1 3/8" | 1 3/8" | Double Bulb | Zinc-Plated Steel | 1" | 6819K91 | 00000000 | 6819K93 | 000000 |