EVN type explosion relief valve

EVN type explosion relief valve
Donat Czapski

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+48 695 244 220

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EVN type explosion relief valve

The EVN venting valve is one of the best solutions available on the market for flameless explosion venting. Compact dimensions allowing for low-profile mounting, lightning-fast response to an explosion, high efficiency in pressure release and flame extinguishing, and an automatic valve closing mechanism after explosion venting – these are undoubtedly the most important advantages of the EVN valve.

EVN venting valve

Unique features:

 Closes immediately after venting, eliminating oxygen access and the risk of ignition 

 Unrivaled dimensions compared to traditional explosion venting systems 

 Round design ensures radial pressure release and flame extinguishing, increasing efficiency 

EVN venting valve

EVN type explosion relief valves provide optimal protection for personnel and equipment in industrial plants. The design of the valves allows for flameless explosion venting in the apparatus, enabling their use (following appropriate guidelines) inside factory rooms. An additional advantage of these designs is the limitation of combustion effects leakage and the reduction of the high explosion temperature.

EVN valves are multi-use protections characterized by excellent vibration resistance and full resistance to negative pressure.

EVN valves have been tested for the following groups of dust: starch, plastics, resins, toners, sugar, wood, MDF, cellulose (fibrous dust), as well as coal and peat.

Basic technical specification:

  • KSt max 300 bar * m / s
  • Max. overpressure, Pred max.: 2,0 bar
  • Operating pressure: 0,2 – 1,0 bar
  • Opening static pressure Pstat = 0,05 bar +/- 20%
  • Max. surface temperature Tmax = 270 °C
  • Max. noise level: 115 dB (A) at 15 m

2 additional design variants:

EVN 3.0 H Valve
A valve in a hygienic, sanitary design. Suitable for securing installations in the food industry, among others, thanks to the use of silicone approved for contact with food.
EVN 3.0 NC Valve
This is a valve that does not have a self-closing mechanism after opening and venting. The valve is then manually reset. It is recommended wherever immediate closure of the venting system is not indicated.

Model approach to explosive safety in an industrial plant

Model approach to explosive safety in an industrial plant

Step 1
ATEX Audit

During the ATEX Audit, we will focus on deficiencies in explosive safety and indicate tasks that should be performed first to have the strongest impact on safety improvement.

Model approach to explosive safety in an industrial plant

Step 2
Protection Concept

The result of the ATEX Audit is also a preliminary concept of protecting the installation from explosion. It allows estimating the costs of protections. After testing the explosiveness parameters of the dust from the installation, we move on to the final concept and design.

Model approach to explosive safety in an industrial plant

Step 3
Design and selection of protections

After accepting the concept and testing the explosiveness parameters of the dust from the installation, we proceed to the final selection of explosion protections and create a design that takes into account all required changes in production.

Model approach to explosive safety in an industrial plant

Step 4
“Turnkey” delivery and installation

We coordinate the entire delivery and installation process of protections. We have our own service teams with experience in performing installation without the need to stop the investor’s plant operation.

Model approach to explosive safety in an industrial plant

Step 5
Execution of ERA and EPD

We conduct a post-implementation Explosion Risk Assessment (ERA) and prepare (or update) the Explosion Protection Document (EPD). We usually also conduct training for the crew in the field of explosive safety.

Secure your industrial plant

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