New UL Listing of NAF S 125 and S 227 Fire Suppression Systems
09 September 2014

Safey Hi-Tech is proud and happy to inform you that we have just upgraded the UL Listing of NAF™ S 125 and S 227 Fire Suppression Systems with new products and design features, precisely:

New Cylinder Assemblies. There are four new 25 bar cylinder assemblies using welded containers of 26.8, 40.2, 75 and 120 liters. Whenever the cylinders can be located within or near the protected area, this would be a cost/effective solution.

New Nozzle Area Coverage Limitations. We have tested our discharge nozzles in a much larger enclosure. We can protect up to 150 m² with one nozzle! Moreover, we have reduced the minimum average nozzle pressure, making the design of systems with long pipe-runs easier than ever. 

New Flow Calculation Program. Flow calculations with the new assemblies and nozzle coverage limitations can be performed with the use of the new flow calculation program (SHT 4.00) developed in conjunction with Hughes Associates. It follows an extensive test program; it is a completely new flow calculation software that is compatible with all the latest computer operating systems* and many other new features.

New Design Manuals. All the information about the new cylinder assemblies and design limitations that designers and consultants need to know are contained in the new UL reviewed/approved Design Manuals.

New Installation/Maintenance/User Manual. Contractors and installers in the field can use the new version of this manual, plenty of illustrations, drawings, specifications and data sheets of the new cylinder assemblies and instructions about their safe handling, installation and maintenance procedures.


For any further clarifications about the new assemblies, flow calculation program, manuals and system features please contact our Technical Team:

SHT Team



*Operating Systems supported: Windows 8.1, Windows 8.1 Pro, Windows 8.1 Enterprise, Windows 8, Windows 8 Windows 8 Pro, Windows 8 Enterprise, Windows 7 Home Basic, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Enterprise, Windows 7 Ultimate, Windows Vista Home Premium, Windows Vista Business, Windows Vista Enterprise, Windows Vista Ultimate. 

Processor support: 32bit and 64bit.