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About Pipe Expansion Joints
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Select the right expansion joint by measuring the size of your pipes and comparing types of joint movement.
Pipe Expansion Joints with Sealing Flanged Ends for Metal Pipe
 |
Shown Installed on a Flanged 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.
Mount these expansion joints as close as possible to anchor points.
Neoprene with Buna-N Liner
 |  |
Expansion Joint | Limit Rod |
Limit Rod Sets—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).
Pipe Expansion Joints | Limit Rod Sets | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Distance | Unthreaded Bolt Holes | ||||||||||||||||||
Flange OD | Pipe Size | Lg. | No. of Bolt Holes | Compression | Expansion | Offset | Max. Pressure @ Temp. | Expansion Joint Type | Flange Material | Reinforcement Material | For Use With | Temp. Range, ° F | Max. Vacuum @ Temp. | Bolt Hole Size | Each | Pair | |||
| 6" | 2 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 3/4" | 4528K52 | 0000000 | 9175K83 | 0000000 | |
| 7" | 2 1/2 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 3/4" | 4528K53 | 000000 | 9175K84 | 000000 | |
| 7 1/2" | 3 | 6" | 4 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 3/4" | 4528K54 | 000000 | 9175K85 | 000000 | |
| 9" | 4 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 3/4" | 4528K55 | 000000 | 9175K86 | 000000 | |
| 10" | 5 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 7/8" | 4528K56 | 000000 | 9175K87 | 000000 | |
| 11" | 6 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 7/8" | 4528K57 | 000000 | 9175K88 | 000000 | |
| 13 1/2" | 8 | 6" | 8 | 1 1/4" | 5/8" | 9/16" | 210 psi @ 72° F | Single Bulb | Neoprene | Metal, Yarn | Coolant, Grease, Hydraulic Fluid, Water | -65 to 220 | 29 in. Hg @ 72° F | 7/8" | 4528K58 | 000000 | 9175K89 | 000000 | |
Pipe Expansion Joint Reducers with Flanged Ends
 |  |
Shown Installed on a Flanged Pipe |
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.
EPDM
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 @ Temp. | Expansion Joint Type | Flange Material | For Use With | Temp. Range, ° F | Max. Vacuum @ Temp. | (A) | (B) | Each | ||
| 6" | 4 1/4" | 2 | 1 | 8" | 4 | 4 | 1" | 1/2" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 3/4" | 5/8" | 4983N11 | 0000000 | |
| 6" | 5" | 2 | 1 1/2 | 8" | 4 | 4 | 1" | 1/2" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 3/4" | 5/8" | 4983N12 | 000000 | |
| 7 1/2" | 6" | 3 | 2 | 8" | 4 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 3/4" | 3/4" | 4983N13 | 000000 | |
| 9" | 6" | 4 | 2 | 8" | 8 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 3/4" | 3/4" | 4983N14 | 000000 | |
| 9" | 7 1/2" | 4 | 3 | 8" | 8 | 4 | 1 3/8" | 11/16" | 1/2" | 200 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 3/4" | 3/4" | 4983N15 | 000000 | |
| 11" | 9" | 6 | 4 | 8" | 8 | 8 | 1 9/16" | 3/4" | 1/2" | 190 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 7/8" | 3/4" | 4983N16 | 00000000 | |
| 13 1/2" | 11" | 8 | 6 | 8" | 8 | 8 | 1 9/16" | 3/4" | 1/2" | 190 psi @ 72° F | Single Bulb | EPDM | Air, Alcohol, Grain Alcohol, Calcium Chloride, Coolant, Grease, Hydraulic Fluid, Water, Sodium Carbonate (Soda Ash) | -20 to 250 | 26 in. Hg @ 72° F | 7/8" | 7/8" | 4983N17 | 00000000 | |
 |
For Pipe Size | |||||||
|---|---|---|---|---|---|---|---|
(A) | (B) | Rod Lg. | Includes | Pkg. Qty. | Pkg. | ||
| 2 | 1 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N115 | 0000000 | |
| 2 | 1 1/2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N125 | 000000 | |
| 3 | 2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N135 | 000000 | |
| 4 | 2 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N145 | 000000 | |
| 4 | 3 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N155 | 000000 | |
| 6 | 4 | 14" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N165 | 000000 | |
| 8 | 6 | 17" | Four Limit Rod Plates, Two Limit Rods with Nuts | 2 | 4983N175 | 000000 | |
