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Passive limiter in case of failure on a circuit or when all control-command systems have been lost.

In the 80’s CERG has developed systems to ensure the passive control of the flow in a pipe (initially for PWR nuclear reactor). Different systems have been developed; some of them have been applied to serious accidents and breakdown of primary or backup circuits.

These systems are based on the cavitation and flow cutoff. For example, when the flow rate increases in the line after a pipe breaking, an advanced cavitation phenomenon appears, thus limiting the flow rate to the flow cut-off.

These systems are designed so that cavitation does not affect the mechanical strength of the materials to ensure a useful life for the bearing cross.

Different types of technologies :

• Single warhead limiter system
• Fluted limiter system
• Multi-hoses limiter system

Possible applications are related for markets Nuclear, Oil & Gas or Chemistry.

With this kind of equipment you will get :

• A flow control non-mechanical or electrical, but hydraulic
• A safe and reliable system usable in emergency conditions
• An innovative solution to the problems of flow control