Screwed and bonded unit (O4A)

Screwed and bonded unit (O4A)

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Screwed and bonded disc and plug

unit for safety critical applications

Our O4A component combines a brass body as standard with either a stainless steel or nickel disc, depending on burst pressure and process requirements.

The conventional, forward-acting rupture disc is clamped between an inlet and an outlet which are then screwed and bonded together. This provides a robust unit ideal for safety critical applications such as gas handling or cryogenic applications.

We typically use thread-lock or an equivalent material to prevent tampering, and offer the unit with a range of thread connections and combinations to suit varying specifications.

O4A is available our innovative burst detection system, OE-Tel. OE-Tel is the first ATEX-approved detection system for OEM rupture disc components. With a fail-safe design, it is not affected by downstream pressure fluctuations or corrosion.

Key features

  • Cost effective solution
  • Capable of withstanding back pressure
  • Maintenance-free solution
  • Full vacuum service
  • Tamperproof


Technical downloads (O4A)

Technical information
Installation guide





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