Engine Exhaust Expansion Joints

April 1, 2013

BOA Multi -Ply Engine Exhaust Expansion Joints The BOA Multi-Ply Bellows Design BOA pioneered the development of the unique multi-ply bellows design which proved to be exceptionally effective in absorbing thermal expansion and vibration in engine and compressor piping systems. The BOA Multi-Ply Bellows is manufactured from a laminated tube which consists of thin gauge stainless steel plies. This tubular […]

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Instalation Guidelines For Expansion Joints

March 28, 2013

During installation of expansion joints there are several points which require special attention. They are of utmost importance for expansion joints to function properly. Anchors Intermediate anchors are designed to withstand differences in spring forces and friction forces. In the case of different pipe diameters, the anchor must be designed to withstand the difference in […]

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CYCLE LIFE Expansion Joint Cycle Life

March 22, 2013

The geometry of the BOA multi-ply convolution is designed to minimize stresses caused by pressure and deflection. The low stress level experienced by the bellows during operation substantially improves life expectancy. The life expectancy of an expansion joint is defined as the number of “Full Load Cycles” it can achieve during its lifetime. A full […]

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March 18, 2013

BOA pioneered the development of the multi-ply bellows design which has proven to be exceptionally effective in absorbing thermal expansion in piping systems. BOA multi-ply bellows are manufactured from a laminated tube consisting of thin gauge stainless steel plies. This tubular body is formed into corrugations by means of a manufacturing process which assures exacting dimensions of the […]

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Expansion Joint focus – Safety

March 14, 2013

Safety –The multi-ply inner core prevents catastrophic failure. Should a crack occur for any reason, – stress, corrosion, mechanical – the plies, acting as a labyrinth seal constrain the pressure and medium and hold the entire joint intact. A small blister occurs in the outer ply. However, the joint would still perform satisfactorily for many […]

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Information about searching for products on our website

March 11, 2013

You will notice many products on our website that may not have the exact requirements that you need. That is because of the special needs of the industries we develope for, you may need something that is custom made. On the bottom of the page you will often notice a contact link to get more […]

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Metal Bellows Engineering

March 7, 2013

From our website you can see some information about Metal Bellows Engineering, we will attempt to provide a little more in depth information about this. Corrosion It is important that during soldering and cleaning the bellows are not exposed to soldering flux containing chlorides. Steel components, tin plated or treated with soldering flux, must be […]

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How to Properly Install a metal Hose

March 4, 2013

Below is a link to a detailed description which is a sub page so it may not be easily visible so we are doing this post to give it a little more exposure. Installation instructions from us are very important because the instructions are based on our engineering specs with can help you get the maximum use […]

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Expansion Joint Materials: Copper Alloys

March 1, 2013

Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion. The best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead. Both these are imprecise terms, both having been commonly referred to as lattens in the past. Today the term […]

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Expansion Joint Materials: Duplex Stainless Steel

February 25, 2013

Duplex stainless steels have a mixed microstructure of austenite and ferrite, the aim usually being to produce a 50/50 mix, although in commercial alloys the ratio may be 40/60. Duplex stainless steels have roughly twice the strength compared to austenitic stainless steels and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress […]

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