BoltEx® - Bolt Exchange Flange Clamp

BoltEx® ensures flange integrity during the bolt replacement under pressure, also known as 'hot bolting'.

Proven to perform at 1.5 times the design pressure even with all flange bolts removed - BoltEx® presents a robust and effective solution for ensuring bolted joint integrity.

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Quick and safe to install

+ 1-2 installers

+ Available at short notice

+ No damage or disturbance to gasket

+ Optimised design and weight for efficient installation and handling

Robust and versatile

+ Proven to perform at 1.5 times the design pressure with all flange bolts removed

+ Countersunk bolts for space restricted locations (e.g., near valves or bulkheads)

+ Open design allows better access to the bolt removing tools (e.g., nut splitters)

+ Designed to be reusable multiple times

+ Can be left in place for an extended period of time preserving flange integrity

Cost effective

+ Eliminates the need for plant shutdown to rectify flange anomalies

+ Prevents loss of containment on flanges

+ Extends asset lifetime and reduces maintenance costs

Innovative Gasket Protection System (GPS)

+ GPS prevents over-compression or release of sealing pressure of flange gasket

+ BoltEx® bolts are pre-loaded against the GPS; compression load on the gasket is maintained as the flange bolts are replaced

+ In case of flange bolt failure BoltEx® safely takes the load preserving joint integrity

Case Studies

Pre-Shutdown

Hot Bolting

Flange Hot Bolting 

Ageing Power Plant