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    36 Products
    About Pipe Expansion Joints
    industrial info icon

    Select the right expansion joint by measuring the size of your pipes and comparing types of joint movement.

    High-Temperature All-Metal Pipe Expansion Joints with Flanged Ends

    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).
    304 Stainless Steel
    Image of Product. Front orientation. Pipe Expansion Joints. High-Temperature All-Metal Pipe Expansion Joints with Flanged Ends.
    Expansion Joint Liners—Liners (sold separately) slide into the expansion joint to provide a smooth interior for unrestricted flow.
    Pipe Expansion Joints
    Expansion
    Joint Liners
    Distance
    Unthreaded Bolt Holes
    Flange
    OD
    Pipe
    Size
    Lg.
    No. of Bolt
    Holes
    Compression
    Expansion
    Offset
    Max. Pressure
    @ Temp.
    Expansion
    Joint Type
    Flange
    Material
    For Use With
    Temp. Range,
    ° F
    Max. Vacuum
    @ Temp.
    Bolt Hole
    Size
    Each
    Each
    6"2
    		6"415/16"5/16"3/8"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F3/4"9413K6100000009413K410000000
    7"2 1/2
    		6"415/16"5/16"5/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F3/4"9413K620000009413K42000000
    7 1/2"3
    		6"415/16"5/16"1/4"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F3/4"9413K630000009413K43000000
    9"4
    		6"815/16"5/16"3/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F3/4"9413K640000009413K44000000
    10"5
    		6"815/16"5/16"3/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F7/8"9413K650000009413K45000000
    11"6
    		6"815/16"5/16"1/8"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F7/8"9413K660000009413K46000000
    13 1/2"8
    		6"81"3/8"1/8"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F7/8"9413K67000000009413K47000000
    16"10
    		8"121 1/4"3/8"1/8"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F1"9413K68000000009413K48000000
    19"12
    		8"121 1/4"3/8"1/8"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F1"9413K69000000009413K49000000

    Pipe Expansion Joints with Butt-Weld Ends

    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.
    321 Stainless Steel
    Image of Product. Front orientation. Pipe Expansion Joints. Pipe Expansion Joints with Butt-Weld Ends.
    Distance
    For Pipe
    OD
    Pipe
    Size
    Lg.
    Compression
    Expansion
    Offset
    Max. Pressure
    @ Temp.
    Expansion
    Joint Type
    Butt Weld
    End Material
    For Use With
    Temp. Range,
    ° F
    Max. Vacuum
    @ Temp.
    Each
    3 1/2"3
    		5"3/8"3/16"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K110000000
    4 1/2"4
    		6"5/8"1/4"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K12000000
    5 9/16"5
    		7 1/2"5/8"1/4"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K13000000
    6 5/8"6
    		9"13/16"3/8"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K14000000
    8 5/8"8
    		8 1/2"13/16"3/8"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K1500000000
    10 3/4"10
    		9 1/2"13/16"7/16"1/16"150 psi @ 72° FBellowSteelAir, Natural Gas, Oil, Steam, Water-20 to 80029 in. Hg @ 72° F5254K1600000000

    Pipe Expansion Joints with Sealing Flanged Ends for Plastic Pipe

    Image of System. Shown Installed on a Flanged Pipe. Front orientation. Contains Annotated. Pipe Expansion Joints. Pipe Expansion Joints with Sealing Flanged Ends for Plastic Pipe.

    Shown Installed on a Flanged Pipe

    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.
    Position the expansion joints as close as possible to anchor points.
    Neoprene with Buna-N Liner
    Image of Product. Expansion Joint. Front orientation. Pipe Expansion Joints. Pipe Expansion Joints with Sealing Flanged Ends for Plastic Pipe.
    Image of Product. Limit Rod. Front orientation. Pipe Expansion Joint Limit Rods. Pipe Expansion Joints with Sealing Flanged Ends for Plastic Pipe.

    Expansion Joint

    Limit Rod

    Neoprene joints resist abrasion better than EPDM joints.
    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
    5"1 1/2
    		6"41 1/2"5/8"3/4"225 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F5/8"4528K2100000009175K820000000
    6"2
    		6"41 1/2"5/8"3/4"225 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F3/4"4528K220000009175K83000000
    7 1/2"3
    		6"41 1/2"5/8"3/4"225 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F3/4"4528K230000009175K85000000
    9"4
    		6"81 1/2"5/8"3/4"225 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F3/4"4528K240000009175K86000000
    11"6
    		6"81 1/2"5/8"3/4"210 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F7/8"4528K250000009175K88000000
    13 1/2"8
    		6"81 1/2"5/8"3/4"210 psi @ 72° FSingle BulbZinc-Plated SteelPolyester PlasticNatural Gas, Oil, Water-10 to 22024 in. Hg @ 72° F7/8"4528K260000009175K89000000
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