We are one of the prominent and trustworthy names in manufacturing, supplying and exporting a broad variety of supreme quality Tube Inserts. The offered inserts are used for providing protection to the tube end of various heat exchangers. The offered inserts are made using quality tested raw material sourced form reliable market vendors. In addition to this, the offered Tube Inserts are known for their resistance to cracking, corrosion and high temperature.
Tube insert, and ferrule, are the same, a metal, plastic or ceramic tube that is inserted into the end of a heat exchanger tube to provide protection to the Tube mouth ends of a shell & tube type heat exchanger. The purpose of the tube insert is to either be sacrificial to the effects of inlet-end erosion, corrosion, impingement, or induce a fluid to fall on the ID of a tube in a falling film exchanger, or transfer extremely high heat past the tube sheet to the exchanger tubes.
The following problems take place in the Shell & Tube Type Heat Exchangers
- Tube-end erosion/corrosion
- Stress Corrosion Cracking
- Crevice corrosion
- Localized pitting
- Ammonia grooving
- Improper tube expansion
- Weakened tube-to-tube sheet joints
For the above problems, VP Engineers (VPE) offers its most cost-effective tube repair, Shield/Seal, also known as a tube insert or ferrule. Although inserts are typically only 6" - 12" long, some applications have required Shield lengths up to 14 feet!
Unfortunately, some exchangers suffer from full-length problems. In this case, VPE Full Length Tube Liners can be a very attractive alternative to a partial or full re-tubing.