Fire Dampers FGS-01
 
NSV&AC Fire Dampers are used to prevent the spread of fire and protect the integrity of fire-resistance rated bulkheads and decks where they are penetrated by ventilation ducts. This ensures that ultimate protection is provided for personnel and equipment. 
The FGS-01 Fire Damper has been designed and certified for installation into fire rated divisions. These range from AO up to H120 in both vertical and horizontal configuration. NSV&AC’s Fire Dampers have been tested at the Warrington Fire Research Centre and undergone the Department of Energy Hydrocarbon Fire Resistance Tests.
 
In addition to the above tests, fire dampers have also been approved by Lloyds Register of Shipping and Det Norske Veritas (DNV) for installation in A0, A60, H60 and H120 fire rated divisions.
 
Shut Off Dampers NSD-01
 
NSV&AC Shut Off Dampers are designed to completely isolate ventilation ductwork or sections of mechanical components for operational and maintenance purposes, the design incorporates blade sealing faces to ensure air leakage is kept to an absolute minimum when closed. 
 
Volume Control Dampers NSD-02
 
Volume Control Dampers are designed to control and balance a ventilation system by limiting the amount of air able to pass through the blades without providing a complete seal. 
  
Pressure Relief Dampers NPR-01
 
Pressure Relief/Control Dampers are designed to maintain a positive pressure within offshore and onshore modules, therefore preventing the ingress of hazardous gases. Pressure relief dampers are counter balanced and once configured to operate at a threshold pressure during installation they will always maintain the desired pressure within the module.
 
Non-Return Dampers NND-01
 
Non-Return Dampers are designed to control the direction of airflow within a HVAC system. Utilised in Analyser House modules and Air Handling Unit’s, NSV&AC’s Non-Return dampers are gravity operated and will open with an increase in upstream pressure and close with a drop in pressure or a downstream airflow to ensure airflow only travels in the right direction.
 
Blast Damper BD-01
 
NSV&AC ATEX rated blast dampers are designed to be installed on penetrations within blast resilient walls and bulkheads. The BD-01 blast damper allows ventilation air to pass through during normal operation and in the event of a blast will close is less than 25 milliseconds to protect personnel and equipment on the non-blast side.
 
The dampers are constructed from 5.0mm stainless steel feature a manual reset and are latched with adjustable tensioners to prevent nuisance trips.
 
Nuclear/Biological/Chemical Damper
 
NSV&AC’s Nuclear/Biological/Chemical Damper (NBC) are designed for full integration into NBC safety systems and provides automated emergency closure to prevent the passage of airborne contamination by radioactive, biological or chemical substances through the ventilation system. 
The unique and innovative design of the cylindrical NBC Dampers ensures a completely airtight seal through 10,000 operations