Pressure Relief Vents

IGV

Select a product information:
    • EWCL5 with 4 hour fire resistance to BS EN 1364-1
    • BSRIA free vent area validation
    • Single direction venting
    • Operating range: 100 pascals upward
    • Removable flange to alter flow configuration
    • Serial Number Traceability
    • 10 Year Warranty as standard

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    The IGV range of inert gas vents are designed specifically for over-pressure venting associated with Inert gas high pressure Fire Suppression Systems.
    The vents can also provide protection against under-pressure venting with Synthetic gases as they have the unique feature of having reversible flanges which allow installers to alter the flow configuration on site and keep the units housed within the wall and avoiding protrusions from the wall.

    The Vents are offered in a number of standard sizes for installation in both internal and external walls with the availability of bespoke sizes in 100mm increments. Providing market leading performance across a range of pressures which has been validated by BSRIA under laboratory conditions to recognised standards. The vents are designed to remain closed below opening 70Pa to allow room integrity testing to be carried out with ease. The units are also fully open at 100Pa giving you the best possible protection for your building.

    The IGV has been successfully tested at EXOVA Warrington Fire following the performance test criteria of BS EN 1364-1, achieving 4 hours fire resistance.

    The IGV is the first Inert Gas Pressure Relief Vent in the world that has been certified to EWCL5.

    Vent Model 0303 and upwards fits into an internal wall thickness of 125 to 205mm with external walls 200 to 220mm.
    Models 0501 & 0301 external and internal wall depths are 125mm to 205mm.

    Deeper walls can be accommodated with the use of our easy fit wall liner extension sleeves. For doors and thin walls the use of our C-frame Kit can be utilised.

  • Demand for Apreco inert gas vents is increasing with the recognised need for over and under pressure venting associated with Inert and Synthetic Gaseous Fire Suppression Systems.

    Buildings are most commonly designed to withstand internal pressures of between 250 to 500Pa, though this can vary depending on the type of construction. The use of correctly sized and functioning pressure relief vents will protect such building structures from damage.

    Apreco inert gas vents are of ‘counter-weighted’ design to prevent the risks of over and under pressurisation resulting from the use of gas fire suppression systems. The Apreco range of pressure relief vents have been successfully tested to EN1364-1 criteria to provide a 4-hour fire resistance rating.

    Specifically developed for these applications, the range can be used alongside a wide range of gas fire suppression systems to prevent structural damage and risk to personnel.

    Maximum room pressure is controlled by the vents opening to allow air to escape, then closing when discharge is complete. This maintains the dilution of the air, so preventing re-ignition.

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  • Vent Sizes

    Standard stock models shown and sized. Bespoke sizes available upon request

    Model Free Vent Area
    (FVA m2)
    Maximum size*
    (W x H mm)
    Aperture size
    (W x H mm)
    Weight**
    (Kg)
    IGV-0301 0.030 Internal
    0.030 External
    440 x 252 360 x 170 4.0
    IGV-0501 0.050 Internal
    0.050 External
    640 x 252 560 x 170 6.0
    IGV-0303 0.092 Internal
    0.059 External
    440 x 452 360 x 370 8.5
    IGV-0505 0.250 Internal
    0.163 External
    640 x 652 560 x 570 17.0
    IGV-0707 0.483 Internal
    0.319 External
    840 x 852 760 x 770 28.0
    IGV-1010 0.976 Internal
    0.650 External
    1140 x 1152 1060 x 1070 50.0

    * Cover Grille maximum dimensions are 10mm greater than the stated IGV inert gas vent maximum size.
    ** Weights are indicative and relate to IGV inert gas vent and Wall Liner combined.
    Vent Model 0303 and upwards fits into an internal wall thickness of 125 to 205mm with external walls 200 to 220mm.
    Models 0501 & 0301 external and internal wall depths are 125mm to 205mm.
    Deeper walls can be accommodated with the use of our easy fit wall liner extension sleeves. For doors and thin walls the use of our C-frame Kit can be utilised.

  • Internal Wall Installation

    Internal-6001

    This typical installation consists of:
    1 x IGV Inert Gas Vent
    1 x Wall Liner

    External Wall Installation

    External-600

    This typical installation consists of:
    1 x IGV Inert Gas Vent
    1 x Weather Louvre

    Deep Wall Installation

    Deep-600

    This typical installation consists of:
    1 x IGV Inert Gas Vent
    1 x Extension Sleeve
    1 x Wall Liner

    Narrow Wall Installation

    Narrow-6001

    This typical installation consists of:
    1 x IGV Inert Gas Vent
    1 x C-Frame Kit
    1 x Wall Liner

  • IGV Data Sheet

    Category: Data Sheets Filetype: pdf

    IGV Drawing

    Category: Drawings Filetype: pdf

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