Axial Expansion Joints
Our axial expansion joints are produced with the highest quality standards. They are made of 100% high-quality steel and are available in many different sizes. Use the filter navigation to find the expansion joint that is right for you.
Vibration absorber with loose flanges, supported external restraint (< 120°C) - Typ BOA Epsilon-C
€1,429.00*
- DN: 250
- PN: 6
- Overall Length [mm]: 130
K-0002060/6
Vibration absorber with loose flanges, supported external restraint (< 120°C)Typ BOA EPSILON-C
Vibration absorber with loose flanges and rim
for absorbing vibrations in circular plane, with
sound insulating supported external restraint.
Maximum operating temperature: 120°C
Materials
Multi-layer bellows and rim: 1.4571
Flanges: Carbon steel, zinc-plated
Restraint: Carbon steel, zinc-plated
Absorber discs: Elastomer
operating temperature:
Variants from €198.40*
Axial steel expansion joint - Inner Sleeve and Protective Tube - flanges - Typ BOA 7129 00X
€570.00*
- DN: 50
- PN: 25
- Overall Length [mm]: 470
- Axial Movement (complete) [mm]: 60
51421236/25
Axial steel expansion joint - Inner Sleeve and Protective Tube - flangesTyp BOA 7129 00X
Axial steel expansion joint, suitable forΔax without prestressing
during installation, with flanges, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: carbon steel
Flanges: carbon steel
Inner sleeve and protective tube: carbon steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €264.00*
Axial steel expansion joint with threaded sockets made of gunmetal - Typ BOA 7160 00S-Ri
€211.00*
- DN: 40
- PN: 10
- Overall Length [mm]: 177
- Axial Movement (complete) [mm]: 29
- Lateral Movement (complete) [mm]: 17
- Universal Vibration (complete): 1.3
51424565/10
Axial steel expansion joint with threaded sockets made of gunmetalTyp BOA 7160 00S-Ri (Gunmetal)
Axial steel expansion joint with threaded sockets suitable forΔax without
prestressing or lateral movement capacity or for removing vibrations,
suitable for drinking water.
Materials:
Bellows: Stainless steel 1.4571
Spacer sheets: Stainless steel 1.4301
Threaded coupling: Gunmetal 2.1096
Gasket: Klingersil C-4400
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €93.00*
Vibration absorber with loose flanges - Typ BOA Alpha-C
€269.00*
- DN: 40
- PN: 6
- Overall Length [mm]: 130
6000017300/6
Vibration absorber with loose flangesTyp BOA ALPHA-C
Vibration absorber with loose flanges and rim
for absorbing all-round vibrations.
Materials
Multi-layer bellows and rim: 1.4571
Flanges: Carbon steel, zinc-plated
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €190.40*
Axial steel expansion joint with weld ends - completely made of stainless steel - Typ BOA 7110 00S-KW
€407.00*
- DN: 32
- PN: 10
- Overall Length [mm]: 186
- Axial Movement (complete) [mm]: 40
- Lateral Movement (complete) [mm]: 30
- Universal Vibration (complete): 2.2
51422145/10
Axial steel expansion joint with weld ends - completely made of stainless steelTyp BOA 7110 00S-KW
Axial steel expansion joint with weld ends for axial
or lateral movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: 1.4571
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €176.00*
Axial steel expansion joint with flanges - Typ BOA 7120 000
€996.00*
- DN: 150
- PN: 40
- Overall Length [mm]: 201
- Axial Movement (complete) [mm]: 20
- Lateral Movement (complete) [mm]: 2
- Universal Vibration (complete): 0.2
51420309/40
Axial steel expansion joint with flangesTyp BOA 7120 000
Axial steel expansion joint with flanges for axial or lateral
movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: mild steel
Flanges: carbon steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €218.00*
Axial steel expansion joint with flanges - completely made of stainless steel - Typ BOA 7120 00S-KW
€1,028.00*
- Universial Vibration: 1.4
- DN: 32
- PN: 16
- Overall Length [mm]: 180
- Axial Movement (complete) [mm]: 34
- Lateral Movement (complete) [mm]: 20
- Universal Vibration (complete): 1.4
51422921/16
Axial steel expansion joint with flanges - completely made of stainless steelTyp BOA 7120 00S-KW
Axial steel expansion joint with flanges for axial or lateral
movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel, material type 1.4571
Flanges: 1.4571
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €584.00*
Axial steel expansion joint with loose flanges - Typ BOA 7150 000
€899.00*
- DN: 150
- PN: 10
- Overall Length [mm]: 240
- Axial Movement (complete) [mm]: 76
- Lateral Movement (complete) [mm]: 28
51422068/10
Axial steel expansion joint with loose flangesTyp BOA 7150 000
Axial steel expansion joint with loose flanges and rim for
axial or lateral movement capacity or for removing vibrations.
The expansion joints are supplied with suitable gaskets.
Materials:
Bellows: Stainless steel, Material type 1.4571
Rims: Material type 1.4571
Flanges: Carbon steel, zinc-plated
The expansion joints are tested by the DVGW
to DIN 30 681 and are approved for gas plants.
Marking with the relevant DIN DVGW Reg. No.
possible for an additional charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €172.00*
Axial steel expansion joint with Mannesmann Pressfitting - Typ BOA 7179 00X-MS
€311.00*
- DN: 54
- PN: 16
- Overall Length [mm]: 559
- Axial Movement (complete) [mm]: 72
51422116/16
Axial steel expansion joint with Mannesmann PressfittingTyp BOA 7179 00X-MS (Heating Sytems)
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with weld ends and Mannesmann press fitting
connector, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: carbon steel
Inner sleeve and protective tube: carbon steel
Fitting: carbon steel
Allowable operating conditions:
max. operating pressure 16 bar
max. temperature 110 °C
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €170.00*
Axial steel expansion joint - Inner Sleeve and Protective Tube - weld ends - Typ BOA 7119 00X
€225.00*
- DN: 25
- PN: 25
- Overall Length [mm]: 380
- Axial Movement (complete) [mm]: 50
51420885/25
Axial steel expansion joint - Inner Sleeve and Protective Tube - weld endsTyp BOA 7119 00X
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with weld ends, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: mild steel
Inner sleeve and protective tube: carbon steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €137.00*
Tip
Axial steel expansion joint with threaded sockets made of malleable cast iron - Typ BOA 7160 00S-Ti
€78.00*
- DN: 15
- PN: 10
- Overall Length [mm]: 109
- Axial Movement (complete) [mm]: 16
- Lateral Movement (complete) [mm]: 9
- Universal Vibration (complete): 0.7
51424581/10
Axial steel expansion joint with threaded sockets made of malleable cast ironTyp BOA 7160 00S-Ti (Malleable cast iron)
Axial steel expansion joint with threaded sockets suitable forΔax without
prestressing or lateral movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel 1.4571
Spacer sheets: Stainless steel 1.4301
Threaded coupling: Malleable cast iron, zinc-plated
Gasket: Klingersil C-4400
Maximum operating temperature: 300 °C
The expansion joints are tested by the DVGW
to DIN 30 681 and are approved for gas plants.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Axial steel expansion joint - Inner Sleeve and Protective Tube - flanges - Typ BOA 7127 00X
€3,164.00*
- DN: 200
- PN: 16
- Overall Length [mm]: 700
- Axial Movement (complete) [mm]: 84
1191466/16
Axial steel expansion joint - Inner Sleeve and Protective Tube - flangesTyp BOA 7127 00X
Axial steel expansion joint, suitable forΔax without prestressing
during installation, with flanges, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: carbon steel
Flanges: carbon steel
Inner sleeve and protective tube: carbon steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €2,260.00*
Tip
Axial steel expansion joint with weld ends - Typ BOA 7110 000
€325.00*
- DN: 65
- PN: 6
- Overall Length [mm]: 246
- Axial Movement (complete) [mm]: 70
- Lateral Movement (complete) [mm]: 38
- Universal Vibration (complete): 2.6
51420114/6
Axial steel expansion joint with weld endsTyp BOA 7110 000
Axial steel expansion joint with weld ends for axial
or lateral movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: mild steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €99.00*
Axial steel expansion joint with weld ends - Torsion protection and stroke limitation - Typ BOA ZA
€203.00*
- DN: 50
- PN: 16
- Overall Length [mm]: 260
- Axial Movement (complete) [mm]: 45
6000037198/16
Axial steel expansion joint with weld ends - Torsion protection and stroke limitationTyp BOA ZA
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with weld ends, torsion protection and stroke limitation.
Materials:
Bellows: 1.4571
Weld ends: carbon steel
Inner sleeve and protective tube: Stainless steel
max. temperature 300 °C
1000 LW / SL=1
(5000 LW / SL1/-25 mm)
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €123.00*
Axial steel expansion joint with Thread - Torsion protection and stroke limitation - Typ BOA ZAN
€183.00*
- DN: 15
- PN: 16
- Overall Length [mm]: 308
- Axial Movement (complete) [mm]: 45
6000062034/16
Axial steel expansion joint with Thread - Torsion protection and stroke limitationTyp BOA ZAN
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with thread, torsion protection and stroke limitation.
Materials:
Bellows: 1.4571
Thread: Stainless steel
Inner sleeve and protective tube: Stainless steel
max. temperature 300 °C
1000 LW / SL=1
(5000 LW / SL1/-25 mm)
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Axial steel expansion joint with threaded sockets made of gunmetal with protective tube - Typ BOA 7162 00S-Ri
€152.00*
- DN: 15
- PN: 10
- Overall Length [mm]: 99
- Axial Movement (complete) [mm]: 10
- Lateral Movement (complete) [mm]: 6
- Universal Vibration (complete): 0.5
51424605/10
Axial steel expansion joint with threaded sockets made of gunmetal with protective tubeTyp BOA 7162 00S-Ri (Gunmetal)
Axial steel expansion joint with threaded sockets suitable forΔax without
prestressing, suitable for drinking water.
Materials:
Bellows: Stainless steel 1.4571
Spacer sheets: Stainless steel 1.4301
Threaded coupling: Malleable cast iron, zinc-plated
Gasket: Klingersil C-4400
External sleeve: carbon steel, zinc-plated, soft soldered
Maximum operating temperature: 200°C
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Low Pressure Expansion Joints with weld ends - Typ BOA EXW
€327.00*
- DN: 65
- PN: 2
- Overall Length [mm]: 300
- Axial Movement (complete) [mm]: 94
- Lateral Movement (complete) [mm]: 46
K-0009385/2
Low Pressure Expansion Joints with weld endsTyp BOA EXW
Low pressure - Expansion Joint with weld ends for axial
or lateral movement capacity.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: 1.4541
Designed for operating pressures of up to 2.5 bar at 20 °C.
When considering the reduction factors
operating pressures of 1.6 bar at 300 °C or
1.4 bar at 500 °C operating temperature.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €304.00*
Axial steel expansion joint - Inner Sleeve and Protective Tube - weld ends - Typ BOA 7117 00X
€2,103.00*
- DN: 200
- PN: 16
- Overall Length [mm]: 570
- Axial Movement (complete) [mm]: 84
1191351/16
Axial steel expansion joint - Inner Sleeve and Protective Tube - weld endsTyp BOA 7117 00X
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with weld ends, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: mild steel
Inner sleeve and protective tube: carbon steel
The expansion joints (up to PN 16) are tested by the DVGW
to DIN 30 681 and are approved for gas plants. Marking with
the relevant DIN DVGW Reg. No. possible for an additional
charge.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €1,391.00*
Vibration absorber with loose flanges, supported external restraint (> 120°C) - Typ BOA Epsilon-C > than 120°C
€1,304.00*
- DN: 150
- PN: 16
- Overall Length [mm]: 130
6000013638/16
Vibration absorber with loose flanges, supported external restraint (> 120°C)Typ BOA EPSILON-C
Vibration absorber with loose flanges and rim
for absorbing vibrations in circular plane, with
sound insulating supported external restraint.
operating temperature: >120°C
Materials
Multi-layer bellows and rim: 1.4571
Flanges: Carbon steel, zinc-plated
Restraint: Carbon steel, zinc-plated
Absorber discs: Carbon steel, zinc-plated
(above 120 °C steel cushions)
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €600.00*
Axial steel expansion joint with threaded sockets made of malleable cast iron with protective tube - Typ BOA 7162 00S-Ti
€170.00*
- DN: 25
- PN: 10
- Overall Length [mm]: 152
- Axial Movement (complete) [mm]: 26
- Lateral Movement (complete) [mm]: 16
- Universal Vibration (complete): 1.1
51424613/10
Axial steel expansion joint with threaded sockets made of malleable cast iron with protective tubeTyp BOA 7162 00S-Ti (Malleable cast iron)
Axial steel expansion joint with threaded sockets suitable forΔax without
prestressing or lateral movement capacity or for removing vibrations.
Materials:
Bellows: Stainless steel 1.4571
Spacer sheets: Stainless steel 1.4301
Threaded coupling: Malleable cast iron, zinc-plated
Gasket: Klingersil C-4400
External sleeve: carbon steel, zinc-plated, soft soldered
Maximum operating temperature: 200°C
The expansion joints are tested by the DVGW
to DIN 30 681 and are approved for gas plants.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €164.00*
Axial steel expansion joint with Mannesmann Pressfitting - Typ BOA 7179 00X-ME
€897.00*
- DN: 54
- PN: 16
- Overall Length [mm]: 559
- Axial Movement (complete) [mm]: 72
51403178/16
Axial steel expansion joint with Mannesmann PressfittingTyp BOA 7179 00X-ME (Sanitary Systems)
Axial steel expansion joint, suitable for Δax without prestressing
during installation, with weld ends and Mannesmann press fitting
connector, inner sleeve and protective tube.
Materials:
Bellows: Stainless steel, material type 1.4571
Weld ends: 1.4571
Inner sleeve and protective tube: 1.4571 or 1.4404
Fitting: 1.4404
Allowable operating conditions:
max. operating pressure 16 bar
max. temperature 85 °C (to DIN 1988) or 110 °C
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.
Variants from €336.00*
Low Pressure Expansion Joints with flanges - Typ BOA EXF
€321.00*
- DN: 50
- PN: 2
- Overall Length [mm]: 220
- Axial Movement (complete) [mm]: 80
- Lateral Movement (complete) [mm]: 64
K-0009238/2
Low Pressure Expansion Joints with flangesTyp BOA EXF
Low pressure - Expansion Joint with flanges for axial
or lateral movement capacity.
Materials:
Bellows: Stainless steel, material type 1.4571
Flanges: 1.4541
Designed for operating pressures of up to 2.5 bar at 20 °C.
When considering the reduction factors
operating pressures of 1.6 bar at 300 °C or
1.4 bar at 500 °C operating temperature.
We reserve the right to make dimensional and design changes.
Larger nominal widths on request.