Gas Suppression Ductwork — Ventilation That Respects the Protected Room
A gas suppression system only works if the room can hold the extinguishing agent at concentration — which makes the ventilation ductwork part of the fire protection. We fabricate ductwork for gas suppression protected spaces — server rooms, electrical switchrooms, archives and plant spaces — with the airtight construction, damper interfaces and purge extract provisions these rooms demand.
Why protected rooms need different ductwork thinking
- Sealed duct construction minimising leakage through the duct route
- Motorised damper positions that close the room down on discharge
- Pressure relief provisions coordinated with the suppression designer
- Purge extract to remove agent after discharge, before re-entry
The purge extract system
After a discharge, the room is full of agent that has to go somewhere safe — not into corridors, adjacent rooms or air intakes. Purge extract ductwork routes it out of the building under control, sized for the air change rates the suppression design specifies.
Coordinated with your suppression designer
Gas suppression ventilation is a coordination exercise between the mechanical design, the suppression system and the room integrity requirements. Many protected rooms sit inside data centres, so this work often pairs with our data centre ductwork and CRAC/CRAH packages. Discuss your protected room or call 07710 984 957.
Frequently asked questions
Why does ductwork matter to a gas suppression system?
Because the room must hold the extinguishing agent at design concentration for a defined hold time. Duct penetrations are potential leak paths, so the ductwork, its dampers and its sealing are part of the room integrity the suppression design — and the room integrity test — depend on.
What is purge extract ductwork?
The extract system that safely removes suppression agent from the room after a discharge, before personnel re-enter. It's sized to the air change rates the suppression design requires and routed so the agent discharges safely outside the building.
Do you supply the dampers as well as the ductwork?
We fabricate the ductwork and the damper interfaces to suit the dampers your specification calls for, and coordinate positions and details with the suppression designer. Damper supply arrangements vary by project — tell us your preference and we'll work to it.
How do I price ductwork for a gas suppression protected room?
Send the room layout, mechanical specification and anything you have from the suppression designer through the contact page and we'll come back with a proposal — or call 07710 984 957 to discuss the project.