The internal sleeve of stainless steel expansion bellows also be known as guide cylinder, it plays important function for the stainless steel bellows. It is installed within the stainless steel expansion bellows to prevent abrasion. But not all application environment is in need of installing an internal sleeve for stainless steel bellows.
stainless steel bellows with inner sleeve
When to install an internal sleeve for stainless steel bellows?
1.When pipeline flowing media is abrasive material like dust and particle, an internal sleeve is required. Strong abrasion media will directly touch bellows and reduce the service life of stainless steel expansion bellows, the internal sleeve can prevent abrasion.
2.Pulverized coal piping needs to install inner sleeve. Although the pulverized coal piping has low pressure, but high flow rate will cause serious washing to the piping.
3.Gas piping also needs to install inner sleeve. And add anticorrosive softness material between bellows and internal sleeve to prevent gas from flowing inside the stainless steel bellows, minimize the inter space.
When not to install an internal sleeve for stainless steel bellows?
1.For piping with lateral displacement, it’s no need of installing internal sleeve. On the contrary, it will have bad influence on lateral displacement deformation. If there are component stop the movement of bellows when angular displacement, then it certainly affect deformation.
2.If pipe diameter is too small, it’s better not to install an internal sleeve.
Henan Lanphan is a professional pipe expansion joint manufacturer in China. Our main products includes rubber expansion joints, stainless steel expansion bellows, metal flexible hose, fabric expansion joints, dismantling joints, pipe fittings and so on. Should you have any question, please feel free to contact us at [email protected]