Wet risers

Non Automatic Fire Protection Systems

Wet Riser Fire Surpression System

Typical Wet Riser Tank & Pump, pipe work and valve sets


Wet fire main water supply pipe installed in a building for fire-fighting purposes and permanently charged with water from a pressurized supply, and fitted with landing valves at specified points.

Where fire mains are installed and there are no floors higher than 50 m above fire service access level, wet or dry fire mains may be installed.

Where there are floors higher than 50 m above fire service access level, wet fire mains should be installed owing to the pressures required to provide adequate fire-fighting water supplies at the landing valves at upper floors and also to ensure that water is immediately available at all floor levels.