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Flameless Venting

Flameless Venting

Flameless venting

‘Flameless Venting’ is an ideal form of explosion protection if the process area is located inside with no possible means of venting to an outdoor safe area. Flame arresting vents provide an escape route for explosion pressures (exactly like ordinary venting), but upon exiting the vessel, any flames and dust particles are quenched in place by the mesh cartridge. This form of venting is highly effective in preventing subsequent fire hazards, and secondary explosions, which often put site personnel and/or neighbouring machinery in severe danger.

Euratex supply flame quenchers which have been optimised to fit in to tight production facilities, reducing the costs and time in modifying plant layouts. We offer an extensive range of sizes and capabilities, all ATEX certified, and design your protection in accordance with EN 14491.

Often the vented equipment is linked to other parts of the process via ductwork. Unfortunately, while the pressure may be relieved by the vent panel, the propagation can return via the ductwork, so explosion isolation of ductwork should always be installed in conjunction with explosion venting. For explosion isolation, please see here.

The Solutions

Flameless venting from Euratex

FLEX Flameless Venting


Flameless vents from Euratex

EVN Flameless Venting

a cost effective solution

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Euratex are proud to be the Official UK Partner for RSBP

flex - flameless venting solution

Flameless venting with Euratex
Flameless vents with Euratex

For production areas where safe outdoor venting is not an option, the FLEX flameless vents are the solution for safe indoor venting. The FLEX unit does not allow flames to pass through due to the flame-arresting mesh, which also prevents any burning material from passing into the surrounding area through the flameless vents. It ensures the safety of personnel and equipment in a processing area, without the increased costs for building modifications when installing classic explosion relief equipment. The FLEX is installed along with a VMP venting device of which there are many sizes to choose from. The FLEX is also suitable for food and pharmaceutical industries and is simple to install and requires minimal maintenance. It is suitable for applications that process melt and coarse dust as well as light metal dusts.

information on Flameless venting by Euratex

The two basic functions of the system are explosion venting and prevention of explosion propagation into a free space.

The FLEX devices are primarily suitable for the protection of:

  • Filters
  • Reservoirs
  • Mills
  • Crushers
  • Cyclones
  • and other equipment with dust explosion danger

The explosion will cause a pressure wave with a high velocity, which causes the explosion venting device (VMP) to burst, whilst the FLEX absorbs flame and burning particles, meaning all that is seen when an explosion occurs is a harmless smoke cloud. 

Table of Sizes: FLEX R

a guide to Flameless venting with Euratex

Table of Sizes: FLEX F

Table of Sizes: FLEX C


(with non re-closing option)

A cost effective solution ideal for dust explosion venting inside production buildings.

new flameless venting from Euratex

The EVN Vent comprises a spring loaded valve plate, valve seat and flame quenching filter element.  During an explosion, the pressure wave acts upon the valve plate causing it to open.  This allows the flame to enter the quenching chamber.  Here, pressure is allowed to dissipate through the flame quenching filter but the flame itself cannot pass. Once the explosion has extinguished, the valve plate returns to its operating position.

Continued operation after an explosion

After an explosion the EVN Vent can be re-used. The unit does not necessarily need to be returned to the manufacturer.  Savings are made in spares holding and down-time as a result.  The result is a cost effective solution for plant designers and end users for all industries.

Protection against gas explosions

In all industrial applications where pulverised or powder material is processed or stored there is a danger of explosions. EVN valves vent the excess pressure in an explosion very quickly and the valve closes immediately as the pressure subsides. 

flexible installation options

EVN Valves can be installed in any position and axis, and provide an economical protection against any damage to people and equipment. The valves can be retrofitted to most containers, vessels, silos and conveyor systems.

recognised safety, quality assurance

EVN Valves are DNV Type Approved for dual fuel and gas engines and engine exhaust lines. The manufacturing quality assurance program is to ISO 9001 standards and the manufacturing company is certified by LLOYD’S REGISTER. 

materials, sizes and limits of use

The EVN Valves are available in mild steel or IN0X304 stainless steel. The EVN Valve can be used for dusts with a maximum Kst=300 and a Pred<3.0 barg. 

EVN Valve


Contact us with your information and we will provide you with a quote based on the product, size and material you require.

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