HI-FOG® is very flexible, allowing for a wide range of configurations. Each configuration may contain one more system types. A typical HI-FOG® system for buildings is comprised of:
A control system, hydrants, panels, release devices, compressors and other equipment can also be added to the system as required.
An example of HI-FOG® system for hotel room
A wide range of HI-FOG® sprinkler and spray heads are available, each designed for a different application and type of fire hazard according to parameters such as ambient temperature, ceiling height, mounting type, pump unit type, and so on. The placement of HI-FOG® sprinklers and spay heads is decided according to the system design guidelines, application-specific fire tests, local fire regulations, and the building requirements.
A HI-FOG® system for buildings will typically be equipped with diesel, electric or gas-driven pump units. The pump unit type and size is selected based on hazard type, areas to be covered, installation space, and power source. Accumulator units are normally used with HI-FOG® systems for total flooding protection of machinery spaces or small computer/telecoms rooms and their sub-floors.
All HI-FOG® tubes in the high-pressure parts of a HI-FOG® system are made from high grade stainless steel. High-pressure fittings are also supplied by Marioff for completing the network and mounting the sprinkler or spray heads. HI-FOG® tubes are comparatively narrow and can be bent into shape onsite, enabling discrete installation in tight spaces – a particular benefit at heritage sites and for retrofits.
HI-FOG® section valves are normally of the open type for wet pipe systems and of the closed type for other system types. Section valves are supplied in different sized to handle different flows. They can be operated manually, electrically, hydraulically or combinations thereof. Section valves can also be fitted with flow indicators so that the flow can be monitored.
The water supply may be a mains feed or a water tank that can be dedicated to the HI-FOG® system or shared with other systems. When electric or diesel pump units are used, a feed pump is typically needed to give pressure to the inlet water. If accumulators are used, the water supply comes from cylinders that are pre-filled with potable water.