Heat exchanger Ferrules and Tube Inserts
Tube inserts and Tube ferrules are a metal 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 need for this Tube Ferrule arises as all tube failures occur within the first few inches of the heat exchanger tube inlet-end. The solution to this situation is the use of a thin wall covering in form of metal tube insert expanded full length into the inlet-end of condensers and heat exchangers. FAV tube insert is designed to ensure a smooth and gentle transition of the fluid down the tube insert to the condenser or heat exchanger tube. We have Metal tube insert and Plastic/Delrin Tube Inserts.
The purpose of the Tube Ferrule Inserts
1) Protect inlet-end erosion & corrosion
2) Act as a protective layer
3) Reduce the medium impact
4) Transfer extremely high heat past the tube sheet to the exchanger tubes.
Common problems at Shell & Tube Type Heat Exchangers
1. Tube-end erosion/corrosion
2. Stress Corrosion Cracking
3. Crevice corrosion
4. Localized pitting
5. Ammonia grooving
6. Improper tube expansion
7. Weakened tube-to-tube sheet joints
For the above problems, FAV tube ferrule inserts offers its most cost-efficient tube protection ,repair, Shield/Seal, also known as a tube insert or ferrule. Although inserts are typically only 3″ – 15″ long, some applications have required lengths up to 3 metres.
Material of Construction for FAV Heat Exchanger Ferrules .
Plastics : Nylon ( Polyamide ), PTFE, PP, Bakelite.
Metal tube inserts in SS 304 /310/316/ 317 /321/347/ 410 / duplex, Hastalloy, Cu-Ni 90/10,Cu-Ni 70/30, Titanium, Inconel 600,Aluminium Brass, Aluminium Bronze , Carbon Steel(B) Hastelloy C 276 , Incoloy, Monel 400, Monel 500, Duplex, Super Duplex , Incoloy 800, Incoloy 825