Dry Riser System

Dry fire main water supply pipe installed in a building for fire-fighting purposes, fitted with inlet connections at fire service access level and landing valves at specified points, which is normally dry but is capable of being charged with water usually by pumping from fire and rescue service appliances.

1. Dry Riser Systems are installed in buildings for fire fighting purposes by trained personnel and which are normally dry and are capable of being charged with water by pumping from Fire Service Appliances.
2. Dry Riser Systems are installed complete with an inlet breaching connector at Ground Floor or at Fire Service Access Level and with Landing Valves at specified points on each floor.
3. Dry Riser Systems are installed up to 50m above the Fire Service Access Level.

Wet Riser System

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.

1. Wet Riser Systems are installed in a buildings for fire fighting purposes by trained personnel and which are permanently charged with water from a pumped source.
2. Wet Riser Systems are installed complete with Landing Valves at specified points on each floor.
3. Wet Riser Systems are installed up to and above 50m subject to the system being designed to provide adequate flow and pressure at the upper floors