Wear Resistant Pipe Bends

Posted in: , on 28. Mar. 2013 - 20:01

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Wear Resistant Pipe Bends

by Gary Brock, Pelletron Corporation

Pneumatic conveying of abrasive materials wears out standard, long-radius pipe bends quickly. There are various types of pipe bends available designed for extended lifetime. Pelletron developed a special elbow that withstands the most abrasive materials.

Wear problems are common in dilute phase conveying systems with high velocities. The conveyed product slides along the elbow wall at a high velocity and high centrifugal forces press the conveyed material against the outer metal surface. The resulting friction causes the elbow walls to wear out quickly.

Pelletron developed a unique, patented conveying pipe elbow that is trade named the Pellbow®. It is especially designed to minimize damage caused when solid particles are injected into a high velocity conveyingsystem - the higher the velocity, the higher the friction.


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The Pellbow by Pelletron Corporation



Using a Pellbow® avoids the problems caused by friction in traditional elbows. By design, material flowing through the Pellbow® forms a pocket or “impact zone” and moves slowly upward and out. Incoming material is deflected at 90 degrees with minimum resistance and no impact damage. The Pellbow®i s wear resistant making it the ideal solution for conveying abrasive products. The Pellbow® is self-cleaning when the material flow is stopped and it works in all installation positions.

Long-radius elbows or other types of pipe bends in existing vacuum and pressure dilute phase conveying systems can be easily retrofitted with the Pellbow®. The pressure drop compared to long-radius elbows is minimally higher. The minimum product to air ratio of 3:1 or higher guarantees best results. The Pellbow® is designed to fit al lkinds of pipe and tube connections.


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Pelletron Pellbow pipe bend explanations



The Pellbow® is available in aluminum, stainless steel and cast iron for pipe sizes from 1.5” up to 12”, as well as in surface hardened versions.


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The Pelletron Pellbow® family



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See these Videos:

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http://videos.bulk-online.com/video/...rp--DeDuster®

Technical Article:

Selecting Elbows for Pneumatic Conveying Systems

by Paul Wagner, Pelletron Corp., USA

https://forum.bulk-online.com/showth...lecting-Elbows

Keywords:

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