Dry Risers

In the UK, a wet riser system is permanently filled with water and is required for buildings over 50 meters tall, providing immediate access for firefighting. In contrast, a dry riser system remains empty and is used in buildings between 18 and 50 meters tall; firefighters must connect it to a water source at ground level during an emergency. The main difference is that wet risers offer an instant water supply for taller buildings, while dry risers, suitable for mid-rise structures, need to be manually charged when needed.

Our breeching valves (2-way for 4" rising mains, or 4-way for 6" mains) are made to the highest standards, conforming to British Standards 5041-1. By using specialised metals such as spheroidal graphite iron, gunmetal and copper alloy, each part functions perfectly when you need it most. Our dry riser landing gate valves are tough, durable and corrosion resistant, and precision made for a water-tight seal when shut off. We also stock low-pressure globe pattern landing valves for special systems, and high-pressure regulating valves for hydrants.

Air-pressure release valves are an essential part of an effective dry riser system, and our automatic valves ensure that air escapes when required, and only when required. They are constructed with a rubber ball system and will provide years of trouble-free operation. And our drain valves will help your dry riser system drain water after use.

We also carry rubber washers, hand wheels for landing valves, and plenty of other dry riser accessories to replace lost or worn items quickly and easily.

Clearly mark your dry riser cabinets and system components with dry riser signs, which can be fixed with sticky pads, double-sided tape or 'no-nails' style adhesive. If there’s a fire on your premises, the first thing a firefighter will look out for will be these signs.