Project Description
/details
A sprinkler system is the most commonly used fire extinguishing system in the world; it is designed to control fires in industrial and civil buildings. It is composed of a sprinkler complex and a supply pipe network controlled through automatic opening valves. The heart of the system is located upstream of the valves, i.e. the fire pumps and the water reserve tank.
Thanks to their know-how, Castagna Antincendi are able to build sprinkler systems of all types, complexity and size, according to national and international standards, anywhere in the world. There are three types of sprinkler systems:
- Wet: the pipes are constantly kept full of water and the intervention will be localised following the breakage of one or more sprinkler heads when the temperature rises due to a fire. Only the affected portion of the area involved will be circumscribed.
- Dry: the pipes are kept under pressure with compressed air. The opening of one or more sprinkler heads involved in the heat zone causes a depression that enables the automatic opening of the control valve, starting its flow of water.
- Pre-action: this type of system has a double closure on the alarm and control valve, it uses the same valve, which is a differential valve, thus low air pressure in the system and high water pressure upstream of the valve. The system only kicks in if two events occur: temperature for which the sprinkler head breaks with air discharge and, at the same time, intervention of the detection system with release of the clapet valve. This system is used where the risk of the unwanted discharge of water (detection false alarm or sprinkler breakage) could cause damage.
/prefabrication
Castagna Antincendi possess integrated technology for the prefabrication of pipes for certified sprinkler firefighting systems. This service was established to meet the need to reduce installation costs and laying times of firefighting systems at the construction site without giving up the quality that has always distinguished Castagna Antincendi products. Castagna Antincendi carry out all processing in an equipped mechanical workshop with specialised personnel, starting from the raw piping, with cutting, rolling, edging, welding, and painting (RAL 3000) stages up to packaging, taking advantage of proven quality systems that include visual checks, tests with penetrating liquids, pressure tests at 15 bar and X-rays. We use high quality, FM and CE certified sleeves.
/applications
Protection of industrial complexes, logistics, shopping centres, residential areas, offices, hospitals, banks and credit institutions, auto workshops, commercial buildings, chemical and pharmaceutical industry, hotels, high-shelf warehouses.
/advantages
Excellent quality/price ratio
Coded total prefabrication
Zero environmental impact
Maximum safety for the people inside
No visibility problem during and after a discharge
Quick installation thanks to the prefabricated system
Protection of large spaces
Special Applications
Available according to UNI EN 12485, NFPA, VdS and FM GLOBAL standards.
/advantages
Flexible Installation
Extinguishing of liquid fuels
Extinguishing fires in large depots
Kicks in the first few seconds, limiting damage to a minimum
Refillable on-site
Technology sustainable over the long term
Extremely reduced laying times
Available in KITS
After-sales assistance
Available according to UNI EN 12485, NFPA, VdS and FM GLOBAL standards.
Extremely short laying times
/details
On a par with water, foam is the extinguishing agent most commonly used in industry to extinguish flammable liquid fires and put out fires in large storehouses – an indispensable solution in applications where water is not enough.
The foam in firefighting systems is a mass of bubbles formed from a mixture of water, concentrated foaming agent and air. The extinguishing action is mechanical with separation of the combustible material from the combustive agent and cooling due to the presence of water.
The system is composed of automatic or manual valves, a mixing system, a pipe network and special nozzles for spreading the foam that is produced.
The water/foam mixture is the first step of the system, i.e. the moment in which the concentrated foamy liquid is mixed with the water. The fire extinguishing foam is mixed in predetermined percentages that normally vary between 3% and 6%.
This mixing is performed by specific equipment like diaphragm premixers, volumetric mixers such as FIREDOS® or self-suction mixers.
The foam extinguishers used to fight fires are protein-based (P), fluoroprotein-based (FP), synthetic film-forming (AFFF), protein-based film-forming (FFFP), alcohol resistant film-forming (AFFFAR or FFFPAR), synthetic.
There are three categories of foam systems, based on the expansion ratio:
- LOW EXPANSION: used when the speed of intervention is fundamental and the combustible material loads are low (expansion ratio up to 1:20).
They are divided into water-foam systems, a system fed through a special mixing device that produces a foamy mixture that will be delivered as the individual sprinkler heads open, and foam deluge systems, which protect delimited areas by means of generators with small flow rates. - “MEDIUM EXPANSION: used when the combustible material loads are more substantial (expansion ratio up to 1:200).With a higher expansion ratio it creates a covering effect on the protected area, a system that is suitable to protect even open and windy places by means of generators with significant flow rates.
- HIGH EXPANSION: a system that, by means of generators with high flow rates, with the goal of a volumetric saturation physically removing the oxygen from the environment (expansion ratio up to 1:800), they are used to fill vast areas such as storehouses and warehouses.
/applications
Protection of industrial complexes, logistics, shopping centres, residential areas, offices, hospitals, banks and credit institutions, auto workshops, commercial buildings, chemical and pharmaceutical industry, hotels, high-shelf warehouses.
Pump Units
Hydrant Networks
Watermist System