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Waist Drum In-line Pressure Balanced Expansion Joint
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Waist Drum In-line Pressure Balanced Expansion Joint

Our pressure balanced expansion joints are designed to absorb movements from a pipe system.They can accommodate axial and lateral movements where anchoring of the pipe system is difficult or impractical due to structural or economic considerations. They can offer significant advantages,where pipe systems are connected with turbines,pumps, valves or other equipment, that are unable to withstand pressure thrust loads.
Availability:
Quantity:
  • DN100~DN3000
  • Fustar
  • 83071000

Waist Drum In-line Pressure Balanced Expansion Joint

There’s one working bellow in each end of waist drum pressure balanced expansion joint,balance bellows in the middle.The pressure balanced expansion joints are subjected to internal pressure thrust by force member (large tie rod or tongue tube).Therefore,a middle fixing bracket is needed only for the piping system. Such expansion joints can absorb axial displacement only.

pressure balanced expansion joint_副本

12. 腰鼓式,

In-line Pressure Balanced Expansion Joints

Structure Diagram 


NO

ITEMS

MATERIALS


NO

ITEMS

MATERIALS

1

End

connection tube

Carbon steel

9

Nut

Carbon steel

2

Bushing ring

Carbon steel

10

Tie rod

Carbon steel

3

Bellow

SS304/SS316L/SS321

11

Bellow

SS304/SS316L/SS321

4

Tie rod

Carbon steel

12

Outer

connection tube

Carbon steel

5

Transition pipe

Carbon steel

13

Ring plate

Carbon steel

6

Outer

stiffened plate

Carbon steel

14

Inner liner ring

Carbon steel

7

Inner

stiffened plate

Carbon steel

15

Inner sleeve

SS304/Carbon steel

8

Ear plate

Carbon steel

16

Tension plate 

Carbon steel


Technique Parameter

Normal Diameter

   Length

Axial Movements

Axial Stiffness

   Joint Size

   D X S

Radial Max. Size D1

   Working 

   Pressure

   mm

mm

mm

N/mm

mm

mm

Mpa

200

1560~1960

42~80

560~320

Ø219X6

700

0.25~1.6

250

1560~1960

42~80

594~384

Ø273X8

760

0.25~1.6

300

1650~2200

56~96

830~516

Ø325X8

820

0.25~1.6

350

1650~2200

56~96

847~560

Ø377X8

880

0.25~1.6

400

2000~2800

68~106

916~612

Ø426X10

940

0.25~1.6

450

2000~2800

68~106

823~941

Ø478X10

1050

0.25~1.6

500

2000~2800

68~106

934~585

Ø529X10

1140

0.25~1.6

600

2100~3100

76~112

1321~943

Ø630X10

1240

0.25~1.6

700

2100~3100

76~112

2141~1162

Ø720X12

1340

0.25~1.6

800

2100~3100

88~120

1778~1043

Ø820X12

1440

0.25~1.6

900

2100~3200

88~126

1643~947

Ø920X12

1600

0.25~1.6

1000

2100~3200

88~126

1724~1097

Ø1020X12

1800

0.25~1.6

* Theyre the regular sizes based on pressure of PN16 above, we can design and produce according to users detail required sizes and conditions.


Performance 

         In-line Pressure Balanced Expansion Joints is consisted by different size bellows (usually the diameter should be 1.4 times bigger) to absorb the axial and balance the pressure thrust. All his pressure thrust is afforded by bellows itself. All ducts fixed supports are only designed according to bellows elastic force and ducts frictional resistance.

         This expansion joint reduces the complexity and size of fix points by eliminating the pressure thrust,thereby delivering stability to the pipe system.This also reduces the required space for structures that carry fix points and guides.It's the optimum solution for additional scenarios such as a short pipe run connecting two vessels,that are unable to withstand the pressure thrust loads or at heights,where additional structures would significantly invrease costs.Pressure balanced expansion joints are available in various types as shown below. 

        Mainly used for ducts not suitable for building high thrust fixed supports or large diameter ducts. There’s typical installation of waist drum In-line Pressure Balanced Expansion Joints. When the Pressure Balanced Expansion Joints is absorbing the axial movements, the two devices each side will extend by temperature.

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Taizhou Fustar Trade Co,.Ltd

Add: City East Development Zone,Jiangyan Area,Taizhou City, Jiangsu Province, China
Mobile(WhatsApp): 86-17321605009
Tel: 86-523-88588220
Fax: 86-523-88588220
Email: sales@jsbellows.com
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