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A bellows or pair of bellows is a device ... be changed by compression or expansion, but not used to deliver air. ... piping systems that transport high temperature ...
The drawback of welded bellows is the reduced metal strength at weld joints, caused by the high temperature of welding. [1] Electroformed bellows are produced by plating (electroforming) a metal layer onto a model (mandrel), and subsequently removing the mandrel. They can be produced with modest tooling costs and with thin walls (25 micrometres ...
Pipe expansion joints are necessary in systems that convey high temperature substances such as steam or exhaust gases, or to absorb movement and vibration. A typical joint is a bellows of metal (most commonly stainless steel ), plastic (such as PTFE ), fabric (such as glass fibre) or an elastomer such as rubber .
High and low pressure expansion joints;1934 In 1920, he applied for a patent for the first so-called flexible metal tube expansion joint, German Reichspatent No. 367 ...
Refractory lined Expansion joints are used in extremely high temperature and high pressure applications and are designed to withstand extreme environments. The Refractory lining within the metallic Expansion joint bellows functions to reduce the pipe wall temperature by 300˚F to 450˚F, depending upon the thickness of the refractory lining. [3]
Toroidal expansion joints are typically used in high pressure applications, where little movement is required, and generally used for heat exchangers. [3] Usually, they are hydraulically formed, but others are free formed. [4] These expansion joints are also referred to as "Omega" bellows due to their shape resembling the Greek letter, Omega. [5]
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