Our systems are designed according to NFPA 750, IMO MSC/Circ. 913, Norwegian PSA etc and our nozzles are Listed & Approved – Marine Type Approved by:
Lloyds, USCG, DNV, American Bureau of Shipping, MCA, Germanischer Lloyd, Bureau Veritas
Water Mist: A water spray for which the Dv0.99, for the flow-weighted cumulative volumetric distribution of water droplets, is less than 1000 microns at the minimum design operating pressure of the water mist nozzle.
Water Mist System: A distribution system connected to a water supply or water and atomizing media supplies that is equipped with one or more nozzles capable of delivering water mist intended to control, suppress, or extinguish fires and that has been demonstrated to meet the performance requirements of its listing and this standard.
Dry Pipe Water Mist System. A water mist system using automatic nozzles attached to a piping system containing air, nitrogen, or inert gas under pressure, the release of which (as from an opening of an automatic nozzle) allows the water pressure to open a dry pipe valve. The water then flows into the piping system and out through any open nozzles.
Engineered Water Mist Systems. Those systems that need individual calculation and design to determine the flow rates, nozzle pressures, pipe size, area, or volume protected by each nozzle, discharge density of water mist, the number and types of nozzles, and the nozzle placement in a specific system.
Local-Application Water Mist System. A water mist system arranged to discharge directly on an object or hazard in an enclosed, unenclosed, or open outdoor condition.
Preaction Water Mist System. A water mist system using automatic nozzles attached to a piping system that contains air that might or might not be under pressure, with a supplemental detection system installed in the same areas as the mist nozzles. The actuation of the detection system opens a valve that allows water to flow into the piping system and discharges through all opened nozzles in the system.
Pre-engineered Water Mist Systems. Those systems having predetermined flow rates, nozzle pressures, and water quantities.
Wet Pipe Water Mist System. A water mist system using automatic nozzles attached to a piping system containing water and connected to a water supply so that water discharges immediately from nozzles operated by the heat from a fire.