Failure analysis of Expansion Joint ( Bellows)

What is the Failure of bellows?

Improper installation
Improper anchoring and supporting of piping system
Bellows corrosion – both internal and external
System overpressure during operation or testing
Bellows vibration; mechanical or flow-induced resulting high cycle, fatigue caused by excessive vibration from connected equipment or the turbulent flow on from very high velocity
Excessive bellow deflection: Axial, lateral, and angular movement greater than design valve torsion of the bellows

What happens when expansion joints fail?

Metal Expansion Joints include bellows which work like a sealed spring to allow expansion, flexibility, and movements. Without Bellows, pipes and hoses could crack and damage the various pressure compressing your entire system.

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Flexpert Bellows Pvt Ltd

Our Company Profile Flexpert Bellows is a leading and manufacturer and global exporter of stainless steel expansion bellows & metal expansion joints offering prime quality joints at competitive terms. Flexpert Bellows is The QUALITY LEADER, On a Global Scale Incorporated by a team of technocrats, FLEXPERT BELLOWS PRIVATE LIMITED in a short span has established itself as a reputed manufacturer and exporter of flexible piping products including metal bellows, expansion joints and hoses of metal, fabric and rubber. The objective of the company has been to produce high quality of products at competitive rates, which has been achieved through a thorough partnership with our clients. Our skilled staff specializes in piping technology and has an in-depth understanding of critical nature of the applications. Our extensive background in the design, engineering and production of metal bellows, expansion joints, fabric and rubber joints, compensators and hoses enables us in meetin...

What are metallic bellows and types of Bellows?

What are metallic bellows? The main element of the expansion joint, which consists of one or more convolutions, is called bellows . The performance of the bellow depends upon the geometric bellows. Hence the type of raw material and its properties, its geometric features, other influencing designing factors, construction or manufacturing method, and performance testing bellows are necessary to study. What are the types of bellows? Formed Bellows These types of Expansion Joint used in the low-pressure system they are cost-effective and can be a substitute to the system Fabricated Bellows Formed from a thin wall tube, formed bellows contains only longitudinal welds, and exhibits significant flexibility Formed Bellows shapes are made from single or multiply plies of suitable material (usually stainless steel) ranging in thickness from .004" to .125" and greater, and in diameter of 3/4 to over 12 ft

Externally Pressurized Expansion Joint | Flexpert Bellows

Externally Pressurized Expansion Joint Externally Pressurized Expansion Joint is the perfect solution when the expansion joint must absorb large axial movement under High Pressure. Externally Pressurized Expansion Joints Absorbs large axial movements without squirm. Eliminates main anchors. Minimum guiding required for externally pressurized expansion joints Heavy duty construction for bellow protection. The Externally Pressurized Expansion Joints provide very low turbulence to f the flowing medium due to the fact that the internal surface of pipeline itself works as the liner for this expansion joint. As the thermal expansion in externally pressurized expansion joints occur the bellows element brining the internal guide rings closer reducing the gap between them and then medium can flow through this joints as if it were not there.

Flexpert Bellows

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