Penetration seal
metal expansion joints

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Penetration seal
metal expansion joints

Penetration seal<br/> metal expansion joints
Request product
Penetration seal (with telescopic covers option)
area cross section.

Item Description
1 Bellows
2 Outside ring
3 Inside ring
4 Drain plug (optional)
5 Cover ring (optional)
6 Inside cover (optional)
7 Outside cover (optional)
8 Boiler wall*
9 Penetration pipe*


* Shown for illustration only.

Penetration seal
metal expansion joints

Features

  • 100 % airtight solution to boiler penetration.
  • Permits axial and lateral movement without causing high stresses in penetration pipe and boiler wall.
  • Maintenance-free
  • Used in heat recovery steam generators (HRSGs).

Advantages

  • Improved boiler efficiency through zero gas seepage.
  • Improved boiler efficiency through reduced heat loss.
  • No emissions
  • Noise reduction

Operating range

Diameter: 75 mm (3”) ... 750 mm (30”) bellows inside diameter
Process temperature: Up to 650 °C (1,200 °F)
Pressure: Up to 1 bar (15 PSI)
Typical axial movement limit: ±200 mm (±8”)
Typical lateral movement limit: 200 mm (8”)
Typical angular movement: 0°


Movements are non-concurrent.

Materials

  • Bellows material options: 1.4301(ANSI 304), 1.4404 (ANSI 316/L dual-certified), 1.4541 (ANSI 321), Inconel® 600, Inconel® 625, 254 SMO®, Incoloy® 25-6HN.
  • Bellows basics: formed by punch mandrel, thin-wall ply thickness ≤1.5 mm (0.060”).
  • Rings, bands: carbon steel, chrome-moly.
  • Metal covers: carbon steel, stainless steel.

Standards and approvals

  • GE Specification
  • Expansion Joint Manufacturers Association (EJMA)
  • ISO 9001:2008

Functional description

Metal expansion joints are used in pipelines to compensate for thermal growth, typically in applications with high internal temperatures; or to prevent vibrations from being transmitted beyond the expansion joint.

Notes

Standard quality control and testing:
  • Air and soap bubble leak check.


Service:
  • Skilled field service teams can provide site support.
  • Expert clamshell (split bellows, for in situ repair) bellows welders.
  • Experienced supervision by our field service personnel available.

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The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE