Explosion isolation

Explosion isolation is perhaps the most important form of explosion protection. Nevertheless, the disconnection is often overlooked or incorrectly considered unnecessary. The fact is, however, that an explosion finds its way from the vessel to all openings because, despite the primary protection, a reduced explosion pressure is created. Explosion pressure is also difficult to prevent due to opposing air flows and then manages to reach a next connected vessel. With the pre-pressure that arises and the flame front that also propagates, secondary explosions are caused that are many times more severe than primary explosions. The catastrophic incidents are therefore often the result of this snowball effect.

EX Rotary valves


Type HT-S-EX
Pressure shock resistance: max. 2 bar
(1.7 bar with PU blades)
Max. difference of pressure: 0.4 bar
Max. capacity (filling ratio of 100%):
38 m3/hr
Nominal connection diameters: 250-350


Type MD-EX
Pressure shock resistance: max. 2.5 bar
(1.7 bar with PU blades)
Max. difference of pressure: 1 bar
Max. capacity (filling ratio of 100%): 62 m3/h
Nominal connection diameters:


André Casteels

Sales engineer Belgium and Luxembourg