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DN 100-> 1200. Special and large diameters available upon request
PRESSURE From 6 to 25 Bar
TEMPERATURE -200°C ÷ 800°C.

DEMOUNTING JOINTS WITH FIXED FLANGES

CHARACTERISTICS:
Excellent reliability, no ageing, absence of permeability, resistant to corrosion, high working temperature

 

MATERIALS:
Bellows in stainless steel 1.4541 EN10028-7 (AISI 321)
Flange in carbon steel
Tie rods and nuts in zinc-plated carbon steel
On request, other grades of stainless steel

 

CONSTRUCTION:
– Single or multi-ply metal corrugated bellows
– Ends: flanges; 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.
Internal sleeves from rolled and welded austenitic stainless steel plate (nickel alloys on request)

 

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

 

FITTINGS:
Flanges conforming to EN1092-1 or ANSI B16.5
Special flanges upon request

USE:
Easy demounting on pipelines

 

APPLICATIONS:

Water pipes, superheated water lines, inflammable gas and fluids

 

TEMPERATURE:
Stainless steel: -200° ÷ 550°C
For expansion joints with flanges 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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