Thick Wall/Flanged & Flued Type

A special case of the Thick Wall type, Flanged and Flued expansion joints are made in two halves from flat annular plates. The outside edges of the plates are formed in one direction (flanged), and the inside edges are formed in the other direction (flued).

The two halves are welded together and then welded into the heat exchanger shell. Because of the higher wall thickness, this type of expansion joint is rugged and the most
durable from the standpoint of abuse, but it has the disadvantage of limited flexibility.

the benefit of thick bellows material typically is the same as the heat exchanger shell, which is typically low alloy carbon steel. Stainless steel and nickel alloys are also available as material options.

Standard materials include,

• Carbon and low alloy steels
• 300 series and duplex stainless steels
• High nickel Alloys
• Aluminum