Rubber Expansion Joint for Pipeline Connection

Completed installation of rubber expansion joints for pipe connection

Rubber expansion joints for pipe connection

Rubber expansion joint is an arch-shaped rubber product with metal flanges at both ends. It plays a flexible connection between metal pipes, has good corrosion resistance and weather fastness performance. It is applied to pipeline systems, due to its compensating effect of thermal expansion and contraction caused by temperature changes.

Rubber Flexible Joints Brochure

Application

  • Plant construction
  • Sand/gravel extraction industry
  • Dredger
  • Suction/pressure hoses in food processing, etc. on conveyor lines, pumps and containers

Classification

Single-Sphere rubber expansion joint in detail

Single-Sphere rubber expansion joint

Multi-Sphere rubber expansion joint in detail

Multi-Sphere rubber expansion joint

Single-Sphere Rubber Expansion Joint

A 2-inch diameter single-sphere rubber expansion joint marked with specification information

2-Inch diameter single-sphere rubber expansion joint

Some 32-inch diameter single-sphere rubber expansion joints are placed on the factory floor.

32-Inch diameter single-sphere rubber expansion joint

2 single-sphere rubber expansion joints’ mouth and body

Single-Sphere rubber expansion joints

A batch of plasticized single-sphere rubber expansion joints are aligned in the factory.

Packaging single-sphere rubber expansion joints

Application

  • Design: Hydrodynamic, cylindrical rubber bellows with full faced rubber flanges and single or multi-part backing flanges. Optionally with embedded pressure or vacuum support rings.
  • Nominal Diameter: DN 32 – DN 5000, intermediate sizes possible
  • Install Length: Standard Flange 90mm – 650 mm, other installation lengths on request
  • Pressure: Depending on the nominal diameter and installation. Length up to 25 bar. Vacuum stability on request.

Movement

Different directions extension of single-sphere rubber expansion joint
A single-sphere rubber expansion joint of two structural drawings.
Materials
No. Description Material
1 Internal rubber layer IIR, CR, EPDM, NR, NBR
2 External rubber layer IIR, CR, EPDM, NR, NBR
3 Casing ply PE cord fabric
4 Flange Q235A, stainless steel
5 Strengthening ring Q235A
Note: Above materials meets Chinese standard GB. Standard can be changed as required.
Table 1: The Size of Rubber Expansion Joint
Nominal Diameter (DN) Flange Length (mm) Axial Displacement (mm) Radial Displacement (mm) Angular Displacement
(a1 + d2)°
mm inch Elongation Compression
32 1.25" 90 6 10 10 25
40 1.5" 95 6 10 10 25
50 2" 105 6 10 10 25
65 1.5" 115 8 15 12 25
80 3" 135 8 20 12 25
100 4" 150 12 20 16 15
125 5" 165 12 20 16 15
150 6" 180 12 20 16 15
200 8" 210 30 30 16 15
250 10" 230 30 30 25 8
300 12" 245 30 30 25 8
350 14" 255 30 30 25 8
400 16" 255 30 30 25 8
450 18" 255 30 30 25 8
500 20" 255 30 30 25 8
600 24" 260 40 40 25 8
700 28" 260 40 40 30 3
750 30" 260 40 40 30 3
800 32" 260 40 40 30 3
900 36" 260 40 40 30 3
1000 40" 260 40 40 30 3
1100 44" 300 40 40 30 3
1200 48" 300 50 50 30 3
1300 52" 300 50 50 35 2
1400 56" 350 50 50 35 2
1500 60" 350 50 50 35 2
1600 64" 350 50 50 35 2
1800 72" 400 50 50 35 2
2000 80" 400 60 60 35 2
2200 88" 400 60 60 35 2
2400 96" 450 60 60 35 2
2600 104" 450 60 60 35 2
2800 112" 450 60 60 35 2
3000 120" 500 60 60 35 2
3200 128" 500 70 70 35 2
3400 136" 500 70 70 35 2
3600 144" 500 70 70 35 2
3800 152" 550 70 70 35 2
4000 160" 550 70 70 35 2
4200 168" 550 70 70 35 2
4400 176" 600 70 70 40 1
4600 184" 600 70 70 40 1
4800 192" 650 70 70 40 1
5000 200" 650 70 70 40 1
Note: Above sizes are according to the Chinese Standard. Other sizes can be changed as required.

Multi-Sphere Rubber Expansion Joint

Two plastic sealed 3-sphere rubber expansion joints on the carton

Plasticized 3-sphere rubber expansion joints

2 multi-sphere rubber expansion joints with control rods in wooden crate

Multi-Sphere rubber expansion joints with control rods

Multi-Sphere rubber expansion joint with control rod in a wooden box

Rubber expansion joints are packed into wooden boxes and ready for shipment.

Multi-Sphere rubber expansion joint on the ground

Different multi-sphere rubber expansion joint sizes

Specification:

  • Design: Hydrodynamic, cylindrical rubber bellows with full faced rubber flanges and single or multi-part backing flanges. Optionally with embedded pressure or vacuum support rings.
  • Nominal Diameter: DN 32 – DN 3000, intermediate sizes possible
  • Install Length: Standard Flange 165mm – 700 mm, other installation lengths on request
  • Pressure: Depending on the nominal diameter and installation. Length up to 25 bar. Vacuum stability on request.

Movement

Different directions extension of multi-sphere rubber expansion joint
A double-sphere rubber expansion joint of two structural drawings.
Materials
No. Description Material
1 Internal rubber layer IIR, CR, EPDM, NR, NBR
2 External rubber layer IIR, CR, EPDM, NR, NBR
3 Casing ply PE cord fabric
4 Flange Q235A, stainless steel
5 Strengthening ring Q235A
Note: Above materials meets Chinese standard GB. Standard can be changed as required.
Table 2：Diameter, Length & Displacement of Multi-Sphere Rubber Expansion Joint
Diameter Length of Double-Sphere (mm) Length of 3-Sphere (mm) Length of 4-Sphere (mm) Axial Displacement (mm) Radial Displacement (mm) Angular Displacement (mm)
mm inch Double-Sphere 3-Sphere 4-Sphere Double-Sphere 3-Sphere 4-Sphere Double-Sphere 3-Sphere 4-Sphere
32 1.25" 165 250 300 ±30 ±50 ±70 45 65 75 45 47 50
40 1.5" 165 250 300 ±40 ±60 ±80 45 65 75 45 47 50
50 2" 165 250 300 ±40 ±60 ±80 45 65 75 45 47 50
65 1.5" 175 300 350 ±40 ±60 ±80 45 65 75 45 47 50
80 3" 175 300 350 ±40 ±60 ±80 45 65 75 45 47 50
100 4" 225 350 400 ±50 ±70 ±90 55 70 80 30 32 35
125 5" 225 350 400 ±50 ±70 ±90 55 70 80 30 32 35
150 6" 225 350 400 ±50 ±70 ±90 55 70 s0 30 32 35
200 8" 325 400 450 ±50 ±70 ±90 55 70 80 15 20 30
250 10" 325 400 450 ±50 ±70 ±90 55 70 80 15 20 30
300 12" 325 450 500 ±60 ±80 ±100 65 75 85 15 15 15
350 14" 325 450 500 ±60 ±80 ±100 65 75 85 15 15 15
400 16" 400 450 500 ±60 ±80 ±100 65 75 85 15 15 15
450 18" 400 550 600 ±70 ±80 ±100 65 75 85 10 10 12
500 20" 400 550 600 ±70 ±85 ±120 65 75 85 10 10 12
600 24" 400 550 600 ±70 ±85 ±120 65 75 85 10 10 12
700 28" 400 550 600 ±75 ±90 ±120 70 80 90 10 10 12
800 32" 450 550 600 ±75 ±90 ±120 70 80 90 8 10 12
900 36" 450 550 600 ±75 ±90 ±120 70 80 90 8 10 12
1000 40" 450 550 600 ±75 ±90 ±120 70 80 90 8 10 12
1200 48" 500 550 600 ±80 ±100 ±140 70 80 90 6 10 12
1400 56" 500 600 650 ±80 ±100 ±140 75 85 100 6 8 12
1600 64" 500 600 650 ±80 ±100 ±140 75 85 100 6 8 10
1800 72" 500 600 650 ±80 ±100 ±140 75 85 100 6 8 10
2000 80" 550 600 650 ±85 ±120 ±160 75 85 100 4 6 8
2200 88" 550 650 700 ±85 ±120 ±160 70 80 100 4 6 8
2400 96" 550 650 700 ±85 ±120 ±160 70 80 100 4 6 8
2600 104" 550 650 700 ±85 ±120 ±160 70 80 100 4 6 8
2800 112" 550 650 700 ±85 ±120 ±160 70 80 100 4 6 8
3000 120" 550 650 700 ±85 ±120 ±160 70 80 100 4 6 8

Installation

2 workers fix and install multi-sphere rubber expansion joints.

Multi-Sphere rubber expansion joint installation

4 workers transfer and install multi-sphere rubber expansion joints.

Multi-Sphere rubber expansion joint transfer