External Pressure Axiai Type (ZWY Type)

The both ends of the bellow for this type of expansion joints are connected to the outer cylinder and the inner cylinder respectively, which has relatively more number of bellow waves. When compressed under external pressures, it can absorb relatively large axial displacement.

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Description

External Pressure Axiai Type (ZWY Type)

1- Nozzle

2- Annular Plate

3-Sleeve

4-Cover

5-Bellow

6- Tie Rod

7- Long Nozzle

8- Condensate Trap

Technical Parameter Table

 Nominal Diameter DN mm Bellow  Compensation Value  Radial Shape Maximum Size

H mm

 Total Length L mm
 Connection Pattern
 

Number of Bellows

n

 Effective Area cm2 Movement Xo

mm

 Rigidity K xo

N/mm

 

Nozzle J

 Flange F
Pd=1.6MPa(16kgf/cm2′)  【N】=1000 times   t=20℃

The design pressure Pd =1.6 MPa (1.6kgf/cm2),the fatigue lie |N]=1000 times and the design temperature t=20℃

 

300 16 1290 197 369 600 1820 1840
400 15 2009 187 467 710 1840 1860
450 16 2435 184 516 76B 1840 I860
500 12 3473 286 586 975 2405 2425
600 12 4766 278 780 1090 2540 1560
700 12 6068 287 817 1190 2540 2560
800 12 7528 290 863 1290 2540  
900 12 9348 438 678 1460 2685  
1000 12 11141 438 719 1560 2685  
1100 12 13090 432 760 1660 2685  
1200 12 15197 432 801 1760 2685  
1300 12 17460 430 $46 1860 2685  
1400 12 19881 426 8S1 1960 2685  
1500 12 22458 422 938 2060 2685  

Our company can produce the expansion join! with larger (or smaller) specifications except the type in this table. Technical parameters car be adjusted and designed according to customer requirements.