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
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.
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
Distance | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | |
7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 0000000 |
Distance | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | For Bolt Dia. | Each | |
7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 0000000 |
- 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
Distance | Unthreaded Bolt Holes | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | For Bolt Dia. | Each | |
7 1/2" | 3 | 6" | 4 | 1/2" | 3/8" | 1/2" | Single Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 0000000 |
High-Temperature All-Metal Expansion Joints with Flanged Ends
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Temperature Range: -20° to 800° F
- Maximum Pressure: 150 psi @ 72° F
- Maximum Vacuum: 29 in. of Hg @ 72° F
These all-metal expansion joints can handle higher temperatures than rubber expansion joints. They reduce stress, vibration, and noise in piping systems by providing a point of flexibility to absorb movement. Joints are made of 304 stainless steel for very good corrosion resistance. The flanged ends rotate for easy bolt hole alignment during installation. Flanges mate with a same-size flat-surface Class 150 flange with a gasket (sold separately).
Liners (sold separately) slide into the expansion joint to provide a smooth interior for unrestricted flow.
For technical drawings and 3-D models, click on a part number.
Expansion Joints with Sealing Flanged Ends for Metal Pipe
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.
For technical drawings and 3-D models, click on a part number.
- For Use With: Coolant, Grease, Hydraulic Fluid, Water
- Temperature Range: -65° to 220° F
- Maximum Pressure: 210 psi @ 72° F
- Maximum Vacuum: 29 in. of Hg @ 72° F
Distance | Unthreaded Bolt Holes | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | |
7 1/2" | 3 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 0000000 |
- 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
Distance | Unthreaded Bolt Holes | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | |
7 1/2" | 3 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | Neoprene Rubber | 3/4" | 0000000 | 0000000 |
Expansion Joints with Sealing Flanged Ends for Plastic Pipe
- For Use With: Alcohol, Water
- Temperature Range: -20° to 250° F
- Maximum Pressure: 220 psi @ 72° F
- Maximum Vacuum: 24 in. of Hg @ 72° F
These joints reduce stress, vibration, and noise in plastic piping systems by providing a point of flexibility to absorb movement. Joints provide a tighter seal than other expansion joints because the flanges are molded into the body for a wide sealing surface. 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.
For technical drawings and 3-D models, click on a part number.
Distance | Unthreaded Bolt Holes | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | |
EPDM Rubber | |||||||||||
7 1/2" | 3 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | Single Bulb | EPDM Rubber | 3/4" | 0000000 | 0000000 |
Expansion Joints with Flanged Ends for High Vibration
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.
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
Distance | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | |
7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 5/8"-11 | 0000000 | 0000000 |
Distance | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | |
7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 0000000 |
- 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
Distance | Unthreaded Bolt Holes | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Expansion Joint Type | Flange Material | Bolt Hole Size | Each | |
7 1/2" | 3 | 7" | 4 | 2" | 1 3/16" | 1 3/4" | Double Bulb | Zinc-Plated Steel | 3/4" | 0000000 | 0000000 |
Chemical-Resistant Expansion Joints with Flanged Ends
- For Use With: Coolant, Hydrochloric Acid, Water
- Temperature Range: -0° to 400° F
- Maximum Pressure: See table
- Maximum Vacuum: 29 in. of Hg @ 72° F
The PTFE body on these expansion joints has a super-smooth surface that stands up to corrosive chemicals. Joints have a triple-bulb design that provides excellent vibration absorption, reducing stress on your piping system. The flanges mate with a same-size flat-surface Class 150 flange without the need for a gasket. Limit rods are attached to the flanges to prevent overextension.
For technical drawings and 3-D models, click on a part number.
Distance | Threaded Bolt Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Max. Pressure | Expansion Joint Type | Flange Material | Bolt Hole Thread Size | Each | |
Ultra-Corrosion-Resistant Coated PTFE Plastic | ||||||||||||
7 1/2" | 3 | 3 5/8" | 4 | 1" | 1" | 1/2" | 130 psi @ 72° F | Triple Bulb | Iron | 5/8"-11 | 0000000 | 0000000 |
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 technical drawings and 3-D models, click on a part number.
- 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 | ||||||||||||||||
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 | 0000000 |
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 |
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.
For technical drawings and 3-D models, click on a part number.
Distance | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Pipe OD | Pipe Size | Lg. | Compression | Expansion | Offset | Expansion Joint Type | Reinforcement Material | Band Clamp Material | Each | |
Neoprene Rubber | ||||||||||
3 1/2" | 3 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Nylon Plastic | 300 Series Stainless Steel | 0000000 | 0000000 |
Silicone Rubber | ||||||||||
3 1/2" | 3 | 7" | 1" | 1/2" | 1 1/8" | Triple Bulb | Fiberglass | 300 Series Stainless Steel | 00000000 | 000000 |
Clamp-On Expansion Joints for Drain, Waste, and Vent
- For Use With: Air, Water
- Temperature Range: -30° to 130° F
- Maximum Pressure: 4 psi @ 72° F
These joints are designed for vertical use to reduce stress, vibration, and noise in drain, waste, and vent systems. Slip them over the end of your pipe and tighten the band clamps for a secure hold. They have an internal stop to ensure pipe is in the proper position.
For technical drawings and 3-D models, click on a part number.
Distance | ||||||||
---|---|---|---|---|---|---|---|---|
For Pipe OD | Pipe Size | Lg. | Compression | Expansion | Expansion Joint Type | Band Clamp Material | Each | |
PVC Plastic | ||||||||
3 1/2" | 3 | 4" | 1/2" | 1 1/2" | Single Bulb | 301 Stainless Steel | 00000000 | 000000 |
Expansion Joints with Butt-Weld Ends
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Temperature Range: -20° to 800° F
- Maximum Pressure: 150 psi @ 72° F
- Maximum Vacuum: 29 in. of Hg @ 72° F
These joints weld to unthreaded pipe or another butt-weld fitting for a leak-resistant, permanent connection. They reduce stress, vibration, and noise in metal piping systems by providing a point of flexibility to absorb movement.
For technical drawings and 3-D models, click on a part number.
Distance | |||||||||
---|---|---|---|---|---|---|---|---|---|
For Pipe OD | Pipe Size | Lg. | Compression | Expansion | Offset | Expansion Joint Type | Butt Weld End Material | Each | |
321 Stainless Steel | |||||||||
3 1/2" | 3 | 5" | 3/8" | 3/16" | 1/16" | Bellow | Steel | 0000000 | 0000000 |
Expansion Joints with Socket Connection for Plastic Pipe
Reduce stress, vibration, and noise in your plastic socket-connect piping system by creating a point of flexibility. These expansion joints have a double-bulb design, so they absorb even more movement and vibration than other expansion joints. Their body is EPDM rubber that's reinforced with nylon for added strength.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- For Use With: Alcohol, Water
- Temperature Range: 40° to 140° F
- Maximum Pressure: 150 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
- Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
To attach joints, connect to unthreaded male socket-connect fittings or pipe using a PVC primer and cement (also known as solvent weld).
- For Use With: Alcohol, Water
- Temperature Range: 40° to 200° F
- Maximum Pressure: 150 psi @ 72° F
- Maximum Vacuum: 26 in. of Hg @ 72° F
- Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
To attach joints, connect to unthreaded male socket-connect fittings or pipe using a CPVC primer and cement (also known as solvent weld).