Externally Pressurized Expansion Joint for high pressure applications with long axial movements

Externally Pressurized Expansion Joints  also known as pressure compensators are primarily used to absorb long axial movement. The externally pressurized designs key features include,

  • Better pressure stability (less susceptible to squirm) allowing longer axial movement
  • Integral external cover and liner
  • Optional torque control tabs and axial limit stops
  • Self draining convolutions

Kopperman (81 series) high pressure compensators are available with both pipe ends or flanged in both single or dual with anchor support configurations.

To learn more about the Externally Pressurized Expansion Joints products that Bellows Systems offers, call us at (800) 233-0623 or email us at info@bellows-systems.com.

Standard designs available in sizes from 1” to 24” and for pressure upto 300 Psi at 800 °F. Standard materials include,

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

Other custom sizes, materials, pressure and temperature ranges available on request. 

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