Fire extinguisher placement

[warrpath4x4]

i dont have any additional input on placement but I will say the more fire extinguishers the merrier, i have seen a couple of rigs burn to the ground out in the dunes after using 2 and 3 fire extinguishers on them. Vehicle get really hot and they are full of liquids that like to burn.

 

[USSkoval]

Did they have no pressure or had moisture gotten in, also? I made it a point to ask about this, it's not something you want to find out when you need it...kind of like bad ammo. From what was explained to me, if the vessel will hold the pressure charge, that means it's airtight/moisture proof and it will discharge when you open the valve. He said if the gauge has dropped below the charged area, then obviously the vessel has been compromised, and the reliability is questionable. This made sense to me, in addition to the fact that he would have no reason to tell me this, since I was paying him to refill all my extinguishers, and would call him back to do it again if he didn't tell me this. I've got six or seven 5-lb extinguishers around the house and vehicles which I'm gradually replacing with the Elements as money permits.
When you say throw-aways, are you talking about the ones that have the plastic gauges that always read in the green? Did they have some sort of expiration date on them, or a serial number? He also told me to never trust an extinguisher without a printed serial number on it, that you can tell was placed after the manufacture of the item. Since it was two of them, it wasn't a fluke...so if you can remember what happened to make them fail, or you took them apart afterwards like any curious male would, what did you find?

I don't know much about extinguishers, but I believe they were the type that just get pitched rather than refilled. The little cheap gauges on them showed pressure in the green area. Both of them, when I went to use them, there was a quick little "pfft" as a tiny burst of powder came out and then nothing more happened. Like they were clogged, similar to an aerosol spray paint can with a clogged nozzle.

I think they are still sitting in the bed of my truck, I can give them a better look when I get home in a few weeks.