HOERBIGER explosion relief valves
Reliable protection against the effects of dust explosions
Throughout the range of process equipment - filters, silos, mills, conveyors, in short wherever combustible powders are produced, stored or conveyed, explosions can occur. In these applications, HOERBIGER explosion relief valves offer superior protection without the complications associated with other protection systems.
Maximum reliability - the EVN 2.0 explosion relief valve featuring opening detection according EN 16009
Type EVN 2.0
The EVN 2.0 was developed based on the design of the HOERBIGER explosion relief valves, which have been tried and tested for decades. It offers maximum reliability in flameless explosion venting and combines the latest standard according to EN 16009 with the proven benefits of vacuum-proof, almost entirely maintenance-free construction, flexible system planning, and installation without vent ducts to the outside.
The opening detection function in the EX-protected version according to EN 16009 comes as a standard with the EVN 2.0 series.
The EVN 2.0 valve is available in different materials, ranging from standard carbon steel to stainless steel variants for the food industry. This material selection, which is tailored to the customers’ requirements, combined with a variety of O-ring materials allows the relief valve to be used in a wide range of applications.
Robust design and reusable – the EV explosion relief valve offers safety tested according to EN 14797
Type EV
The EV valve - the cost-effective alternative for explosion venting outside. Designed as a recloseable valve, the EV valve additionally offers decreased flame propagation over bursting disks and rupture panels.
The robust design, combined with the ability to reuse the valve, offers a key advantage over conventional relief devices. The EV valve is certified and stands out with safety tested according to EN 14797.
HOERBIGER explosion relief valves offer superior protection and economy
- The valve recloses immediately after an explosion and does not require repair or refurbishment. As a result, the process does not have to be stopped immediately.
- HOERBIGER explosion relief valves can be installed to discharge into confined compartments. They operate reliably in any position. This provides significant savings, when the valves are applied to new plant designs or are retro-fitted to existing equipment.
- Suitable for multiple explosion events, HOERBIGER explosion relief valves are virtually maintenance free and offer reliable explosion protection for the life of the equipment.
- The optimal design and the compact size make installation simple and cost effective.
| Application areas (Examples) |
| Food industry |
| Pharmaceutical industry |
| Coal industry |
| Petrochemical industry |
| Plastics industry |
| Protecting equipment (Examples) |
| Dust collectors |
| Cyclones |
| Dryers |
| Conveying equipment |
| Silos |
| Mills and sieving machines |
