Normal Corr Expansion Joints

Normal Corr Expansion Joints

Normal Corr expansion joints employ a standardized bellows design ideally suited for general industrial applications. Offered with flanges or butt weld ends from 3” to 48” nominal diameter for design pressures to 300 psig at 650°F. (Consult factory for larger sizes)

PDF Reference Guide Normal Corr Expansion Joints

How to Order:

Example P/N




NCB Single


NCB Tied

End Connection


WW Weld End


FF Flanged End


VV Vanstone End

Normal Corr Data

  • Size Range – 3″ to 48″ *NPS
  • Allowable Pressure Stainless Steel Bellows – Vacuum to 300 psig
  • Temperature Limits Stainless Steel Bellows – -20°F to 650° degrees F. **
  • Axial Traverse – See Date Sheets
  • Lateral Motion- See Data Sheets

* For sizes larger than 48” consult factory for information. **With special alloys, temperatures of minus 425°F. to plus 1600°F. can be handled.

Materials of Construction

  • Bellows: ASTM A240 T316L (standard)
    Other materials available
  • Pipe: ASTM A53/A106
    50 lb. Series: Sch. 40
    150 lb. Series: Sch. 40
    300 lb. Series: Sch. 40
  • Flanges: A516-70 Plate (Std) A105 (Opt)
    50 lb. Series: 150 lb. ANSI B16.5 R.F.S.O.
    150 lb. Series: 150 lb. ANSI B16.5 R.F.S.O.
    300 lb. Series: 300 lb. ANSI B16.5 R.F.S.O.
  • Covers: Carbon Steel
  • Tie Rods: Carbon Steel
  • Liners: 300 Series Stainless Steel
  1. Rated cycle life is 2000 cycles per EJMA 8th edition for any one movement tabulated.
  2. To combine axial, lateral movements, refer to page 7.
  3. Maximum axial extension movement is 10% of tabulated axial value.
  4. To obtain greater movements or cycle life, contact the factory.
  5. Catalogue pressure ratings are based upon a maximum bellows temperature of 650°F. Actual operating temperature should always be specified.
  6. Maximum test pressure: 1 1/2 x maximum working pressure.