Clamshell Bellows
Clamshell Bellows provide a very effective solution when a quick and unplanned replacement of the bellows is needed. Clamshell Bellows are two-pieces expansion joints that are welded together on-site. They can be introduced retrospectively when the existing bellows lose their ability to contain pressure. The purpose of clamshell bellows is to provide a very quick remedial solution with the least disruption to the operation of the pipe system. The use of Clamshell Bellows invariably yields huge cost savings when compared against the cost of the manufacture and fitting of a completely new expansion joint. Clamshell Bellows can be designed as either temporary or permanent solution and as an over-sized or same-sized Clamshell Metal Expansion Joint Bellows.
Design range and scope of supply within Clamshell Bellows
The capability design range for Belman and Clamshell Bellows are:
DIMENSIONS:
DN 15-12.000
PRESSURE:
Up to 150 barg or more if required
TEMPERATURE:
-256°C to +1000°C
MATERIALS:
Austenitic stainless steels, High alloys, Duplex, Titanium, Hastelloy,
Incoloy, Inconel, Alloy 59
DESIGN CODES:
EN 13445, EN 13480, EN 14917
ASME VIII, div.I, ASME B31.3
ASME B31.1, EJMA, AD 2000
and others on request
TESTS:
Radiographic examination (X-ray), Helium leak testing, Pressure test, Air test, Dye penetrant test, Magnetic particle examination and many more
