The IndoorVent IV

Flameless and dust-free explosion venting inside the service room with the reusable BRILEX IndoorVent

Indoor Explosion Venting

By using BRILEX Explosion Vents in combination with a unique BRILEX Ceramic Filter, economical venting of dust explosions is possible. When the vent opens during an explosion, the ceramic filter retains the dust and cools down the hot gases.

Development Criterion

Existing quench pipes are uneconomical, not re-usable or have lower venting efficiencies requiring high vessel strength. The BRILEX IndoorVent offers unlimited use with the highest known efficiency.


Due to high investment costs and bad efficiency, design engineers and end users tried to find alternatives. The BRILEX IndoorVent offers a combination of a fast opening BRILEX Explosion Vent with a high efficient ceramic filter. The vent area of the IndoorVent is greater than the vent areas of existing quench pipes. After an explosion the IndoorVent can be re-used. The result is a cost effective solution for plant designers and end users for all industries.


The BRILEX IndoorVent can be used for reduced explosion pressures (P red) between 0.2 to 1.5 bar g and K st values up to 250 bar m/sec.

After an Explosion

Times have changed since explosion quenching systems had to be thrown into the waste bin after single use. The BRILEX IndoorVent can be re-used after changing the filter cartridges and the explosion vent. Maintenance time of approximately 30 minutes is only needed before it can be used again. BRILEX guarantees this after each dust explosion.

Delivered Products

BRILEX delivers complete units consisting of the IndoorVent and a pre-installed BRILEX explosion vent including integrated flange gaskets and monitoring sensor. A spare parts kit for immediate use after an explosion consisting of explosion vent and filter cartridges.

TypeIV 240IV 600IV 1000IV 1600IV 2200IV 3200IV 4200
FlangeDN 200DN 300DN 400DN 500DN 600DN 700DN 800
Vent area (cm2)24060010001600220032004200
Height (mm)5356097481035125717501850
A/B Length/width3594105586667859831096
Weight (kg)385675119171238312
Max raw gas volume (m3) pro IV14,44,49,79,72525
Max. pred (bar)1,51,51,51,51,50,60,6

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