the positive pressure (ppv) fan is the most commonly found fire service fan. two keys are the pressure and portal: the outside air being forced in at higher pressure pushes not only the inside air out but it also takes out the contaminants such as smoke and toxins to the outside, which dilutes with the copious amounts of outside air in the atmosphere. for this reason it is not valid to say ventilation is complete or effective based solely on visibility; it is important to also to take atmospheric gas readings to determine oxygen, hydrogen cyanide, and carbon monoxide levels. the other aspect of ppv fan use is the need for an exit portal. if every window is out and the roof is off the structure, the fan may move some smoke and air at the entry point, however it will not be able to truly create pressure within the structure. when ventilating an home or even apartment building with a common hallway, ventilate one room or apartment at a time. when placing the fan, pick a location that has or will have an opening distant from the entry.
this is to encapsulate the opening and again assist in creating that interior pressure. prior to turning the fan on, ensure you have an exit portal and that everyone on the fireground is aware that you are about to begin positive-pressure fan use. with many of today’s fans being electric this is often a simple dial or switch on the top of the fan. avoid having the opening used as a entry point for firefighters trying to access the building, as this only reduces the efficiency of the system. as with any tool in the fire service it is critical to know when, how and why to use it. take some time to get out your fan and fully understand the concept of ppv usage on the fireground. brian zaitz is a 15-year student of the fire service and the captain-training officer with the metro west fire protection district. zaitz is also a credentialed chief training officer through the center for public safety excellence as well as a student of the national fire academy’s executive fire officer program.
there are many types of ppv fans & blowers for different firefighting situations, from large ppv fans and blowers used to in tunnel fire fighting to small compact electrical ppv fans. that is why we proudly feature only the highest rated, highest quality ppv fans & blowers from industry-trusted brands like leader, russwurm ventilatoren and ramfan. when it comes to finding the latest firefighter positive pressure ventilation fans and blowers for your fire and rescue crew’s’ choose fire product search. the leader large flow ventilation blowing duct for channelling the air stream in a straight line with the leader large flow ventilation extraction duct.
the mt236 neo firefighting petrol-driven ppv fan from leader with neo and easy pow’air technology for firefighting response creates a very concentrated and ultra-powerful jet of air the evg230 neo is a 115v ppv variable-speed drive electric fan – 28,900m³/h for postitive pressure ventilation firefighting response. the leader skid easy 4000 large flow fan for assembly on vehicle is the mobile solution for large volumes such as tunnels and hangars. the esp280 ppv soft starter fan is an electrical positive ventilation fan that uses easy powair technology and creates a concentrated, powerful jet of air the easy 4000 firefighting large flow fan from leader is a very effective solution for smoke removal and air cooling and renewal in large spaces (parking lots, tall apartment blocks, factories, storage facilities etc.) the fire product search website is an ever-growing international community of fire chiefs, professional firefighters, fire training officers, and trade specialists covering the field of fire fighting and rescue. fire product search – the world’s leading guide to professional fire fighting & rescue.
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