Closed Nozzles
Closed nozzle systems are used in environments where fire suppression may be required on a targeted basis. The nozzle is sealed with a heat-sensitive thermal element (frangible bulb) that fractures at a set temperature and allows the mist to be dispersed.
Hydrocore Closed (bulb) Nozzles are made of stainless steel. They are used in wet-pipe systems for the protection of Light Hazard Occupancies, an occupancy where the quantity and/or combustibility of contents is low and fires with relatively low rates of heat release are expected. The nozzle discharges water at 35.0l/min at normal working pressure. Each micro nozzle has an integral filter.
Hydrocore High Pressure Water Mist system has been approved for the protection of occupancies with lightly loaded non-storage & non-manufacturing areas with ordinary combustibles, also known as Hazard Category 1 (HC-1).
All Hydrocore systems are designed, manufactured and tested to NFPA750. Stainless steel conforms to following specifications: AISI 304 (body) AISI 316 (micro-nozzle)
Open Nozzles
Hydrocore Open Nozzles are made of stainless steel used in dry-pipe systems for the protection of machinery spaces, as part of a total flooding system, for protection of local applications, transformer protection or tunnel protection. The nozzle discharges water at a working pressure of 100bar. Each micro nozzle has an integral filter.
Hydrocore Open Nozzles are manufactured from stainless steel and are used in dry-pipe systems for the protection of machinery spaces, as part of a total flooding system. Total Flooding systems use open nozzles (they have no fusible element) spaced throughout a compartment. In this dry pipe system, the water is only contained in the pipework prior to the section valve, until automatically released by a signal from the Fire Detection System (FDS) or manual activation.
Depending upon the application the appropriate nozzles are selected to provide a desired fire suppression effect. Spacing between nozzles, max heights and flow rates are also specific to each type of nozzle.
All Hydrocore systems are designed, manufactured and tested to NFPA750.
Stainless steel conforms to following specifications: AISI 304 (body) AISI 316 (micro-nozzle)
