In an unprotected system, it is not the first explosion that causes the most damage, but the following secondary explosions. And they are always the result of insufficient isolation.

Do not make the mistake of thinking that protecting a vessel with explosion venting is always enough. The pressure will accumulate inside and will try to find a way out, through every possible opening. When using a filter, you will have the same problem. An explosion will create an overpressure inside, and instead of sucking, the filter will start blowing in all directions!

Explosion suppression and explosion resistant design will solve a large part of the problem, but in both cases isolation still remains of vital importance.

Isolation through existing process elements

There are several types of explosion isolation to choose from. Sometimes we use existing process elements, like rotary valves, roots blowers, conveyer screws, double valves (according to the lock principle), or non-return valves. We often need to make some adaptations, to guarantee that the explosion can be halted effectively. With these systems, an ATEX certificate is required.

Isolation through passive elements

We also offer a wide range of passive elements: flame arresters, VENTEX fast-closing  valves and explosion relief stacks. They function without external detection or control and can only be applied in environments with relatively clean air (without too much dust). For all of these systems, you need an ATEX certificate.

Isolation through active elements

There are also several active systems to help you stop explosions, like fast-shutting gate valveschemical barriersfire trap valves and diverter valves. These are all operated by a detector over a control system.

The main advantage is that these systems can be installed anywhere and do not influence the existing process.They do not cause obstructions in the pipes and you do not need to provide blow-off conduits to the outside.


Head Office (Belgium)

+32 3 458 25 52

England & Ireland

+44 1932 571303


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