Description
VisqueenPro Gas Vent Box
The VisqueenPro Gas Vent Box is a high-performance ground-level vent designed for use within Visqueen ground gas protection systems. Engineered to safely disperse hazardous ground gases, including volatile organic compounds (VOCs), it provides an effective ventilation point while helping to minimise the risk of rainwater entering the gas venting system. Manufactured with a galvanised steel base, adjustable levelling feet and a lockable heel-safe lid, the VisqueenPro Gas Vent Box delivers long-term durability for residential, commercial and infrastructure developments.
Designed for applications where gas vent pipes cannot terminate through a perimeter wall, the VisqueenPro Gas Vent Box is ideal for curtain walling, glazing systems and other modern building designs. Rated to Load Class B125 in accordance with BS EN 1433:2002, it is suitable for pedestrian areas, private car parks and light vehicle traffic while providing a free airflow capacity of 20,148mm² for efficient ground gas ventilation.
Key Benefits
- Designed for ground gas venting applications
- Suitable for methane, carbon dioxide and VOC gas protection systems
- Helps reduce rainwater entering the venting system
- Galvanised steel construction for durability
- Adjustable feet for easy installation and levelling
- Heel-safe lockable lid
- Tested to BS EN 1433:2002
- Load Class B125 for pedestrian areas and light vehicle traffic
- High free airflow capacity of 20,148mm²
- Suitable for suspended floor ventilation
- Ideal where wall venting is not possible
- Compatible with Visqueen gas vent pipe systems
Applications
- Ground gas protection systems
- Methane venting systems
- Carbon dioxide venting
- VOC gas venting
- Brownfield developments
- Residential construction
- Commercial developments
- Suspended precast concrete floors
- Curtain walling projects
- Private car parks
- Pedestrian areas
Technical Information
- Product Type: Ground gas vent box
- Material: Galvanised steel
- Pipe Connection: 110mm
- Width: 123mm
- Length: 530mm
- Height (without legs): 112mm
- Visible Installed Area: Approx. 530mm × 153mm
- Lid Size: 499mm × 123mm
- Free Air Flow Capacity: 20,148mm²
- Load Rating: B125
- Standard: BS EN 1433:2002
- Minimum Concrete Bed: 50mm (Strength Class C25/30)
- Temperature Restrictions: None
Frequently Asked Questions
What is the VisqueenPro Gas Vent Box used for?
It provides a ground-level ventilation point for Visqueen gas venting systems, allowing hazardous ground gases to safely disperse to atmosphere while helping prevent rainwater entering the system.
Where is the VisqueenPro Gas Vent Box typically installed?
It is normally installed close to the building perimeter where vent pipes cannot exit through a masonry wall, such as buildings with curtain walling or glazing systems.
Can the vent box be used in pedestrian areas?
Yes. It is tested to BS EN 1433:2002 Load Class B125, making it suitable for pedestrian precincts, private car parks and light vehicle traffic.
How much airflow does the vent box provide?
Each VisqueenPro Gas Vent Box provides a free airflow capacity of 20,148mm².
Does the vent box require a concrete surround?
Yes. Visqueen recommends a minimum 50mm concrete bed and surround using Strength Class C25/30 concrete for secure installation.
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