Selecting and Measuring Expansion Joints
For information about selecting pipe size, see Selecting and Measuring Pipe & Fittings.
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Clamp-On Expansion Joints
- For Use With: Calcium Chloride, Oil, Petroleum, Sewage, Sludge, Sodium Carbonate (20% in Water), Water
- Temperature Range:
Neoprene Rubber: -20° to 220° F
Silicone Rubber: -75° to 500° F - Maximum Pressure: 150 psi @ 72° F
- Maximum Vacuum: 20 in. of Hg @ 72° F
Slip these joints over your pipe ends and tighten the band clamps for a secure hold. Joints have a triple-bulb design that provides excellent vibration absorption to reduce stress on your piping system. They also have reinforcing rings for extra support during pressure surges and in vacuum applications.
Neoprene rubber joints are more abrasion resistant than silicone rubber joints.
Distance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Pipe OD  | Pipe Size | Lg. | Compression | Expansion | Offset | Expansion Joint Type | Reinforcement Material | Band Clamp Material | Each | |
Neoprene Rubber | ||||||||||
| 2 3/8" | 2 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 0000000 |
| 2 7/8" | 2 1/2 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 3 1/2" | 3 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 4 1/2" | 4 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 5 9/16" | 5 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 6 5/8" | 6 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 8 5/8" | 8 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 10 3/4" | 10 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
| 12 3/4" | 12 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 000000 |
Silicone Rubber | ||||||||||
| 2 3/8" | 2 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 2 7/8" | 2 1/2 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 3 1/2" | 3 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 4 1/2" | 4 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 5 9/16" | 5 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 6 5/8" | 6 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 8 5/8" | 8 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 10 3/4" | 10 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
| 12 3/4" | 12 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
Expansion Joint Reducers with Flanged Ends
Connect different pipe sizes in your line while adding a point of flexibility between them. These expansion joints absorb movement between two connected pipes to reduce stress, vibration, and noise. Their flanged ends mate with same-size Class 150 flanges without the need for a gasket. Each flange is supported by a zinc-plated steel plate. The body of these expansion joints is reinforced with cord for added strength.
Your pipe system must be rigidly anchored on both sides of the expansion joint to control expansion or contraction of the line. When proper anchoring cannot be provided, limit rods (sold separately) are required.
- For Use With: Air, Alcohol, Calcium Chloride, Coolant, Grain Alcohol, Grease, Hydraulic Fluid, Sodium Carbonate (20% in Water), Water
- Temperature Range: -20° to 250° F
- Maximum Pressure: See Table
- Maximum Vacuum: 26 in. of Hg @ 72° F
Unthreaded Bolt Holes | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | No. of Bolt Holes | Distance | Bolt Hole Size | ||||||||||||
(A) | (B) | (A) | (B) | Lg. | (A) | (B) | Compression | Expansion | Offset | Max. Pressure | Expansion Joint Type | Flange Material | (A) | (B) | Each | |
EPDM Rubber | ||||||||||||||||
| 6" | 4 1/4" | 2 | 1 | 8" | 4 | 4 | 1" | 1/2" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM Rubber | 3/4" | 5/8" | 0000000 | 0000000 |
| 6" | 5" | 2 | 1 1/2 | 8" | 4 | 4 | 1" | 1/2" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM Rubber | 3/4" | 5/8" | 0000000 | 000000 |
| 7 1/2" | 6" | 3 | 2 | 8" | 4 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM Rubber | 3/4" | 3/4" | 0000000 | 000000 |
| 9" | 6" | 4 | 2 | 8" | 8 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM Rubber | 3/4" | 3/4" | 0000000 | 000000 |
| 9" | 7 1/2" | 4 | 3 | 8" | 8 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM Rubber | 3/4" | 3/4" | 0000000 | 000000 |
| 11" | 9" | 6 | 4 | 8" | 8 | 8 | 1 9/16" | 3/4" | 1/2" | 190 psi @ 72° F | Single Bulb | EPDM Rubber | 7/8" | 3/4" | 0000000 | 00000000 |
| 13 1/2" | 11" | 8 | 6 | 8" | 8 | 8 | 1 9/16" | 3/4" | 1/2" | 190 psi @ 72° F | Single Bulb | EPDM Rubber | 7/8" | 7/8" | 0000000 | 00000000 |
For Pipe Size | |||||
|---|---|---|---|---|---|
| (A) | (B) | Rod Lg. | Includes | Pkg. | |
| 2 | 1 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 0000000 |
| 2 | 1 1/2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |
| 3 | 2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |
| 4 | 2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |
| 4 | 3 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |
| 6 | 4 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |
| 8 | 6 | 17" | Four Limit Rod Plates, Two Limit Rods with Nuts | 00000000 | 000000 |