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DN 50-> 2400. Special and large diameters available upon request
PRESSURE From 6 to 40 Bar
TEMPERATURE -200°C ÷ 800°C.

GIMBAL EXPANSION JOINTS WITH WELD ENDS

CHARACTERISTICS:
Excellent reliability, does not age, absence of permeability, resistant to corrosion, high operating temperature.
In conformity with EJMA (Expansion Joint Manufacturer Association) standards, movements indicated in the technical tables are calculated for 3000 complete cycles at nominal pressure.

 

MATERIALS:
Bellows in stainless steel 1.4541 EN10028-7 (AISI 321).
Weld ends in carbon steel
Hinges in carbon steel
Other grades of stainless steel available upon request

 

CONSTRUCTION:
– Single or multi-ply metal corrugated bellows
– Ends: weld ends, other types according to customer’s specifications
The corrugations are formed by a PLC controlled automatic process.
The special forming process, free from friction and lamination, allows constancy and accuracy of the corrugation profile with minimal material yielding.

 

TESTING:
– Pneumatic leak test (standard)
– Hydraulic test, specific dimensional controls, non-destructive tests, material certificates of main pressure bearing parts (on request)

USE:
Correction of static offsets and compensation for thermal expansion and movements.

 

APPLICATIONS:
Superheated water lines, steam, diathermic oil, steam turbines.

 

TEMPERATURE:
Stainless steel -200° ÷ 550°C.
For expansion joints with weld ends in carbon steel -20° ÷ 350°C.
For a temperature range 50° ÷ 550°C performances (movements, working pressure, n° of cycles) must be reduced by applying the relevant coefficients (See document N205 Derating factors”).
For a temperature range higher than 550°C, please contact our Technical Department.

AVAILABLE DOCUMENTS:

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