For those of you who have the 5lb or other size tanks on your rigs, do you ever have to have the tanks/seals inspected or serviced? I'm just wondering about using the same tank long term if there's any type of maintenance or anything to prevent leaks or to make sure it's always good to go. I've never worried about it with the 20lb tanks for my grill. I've just always assumed that the company checks the tank when I exchange it before they refill it and put it back out.
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In some states, like Mass, the bigger pro places that do a lot of tank-filling do a visual inspection of your tank when filling and if rusty (sometimes even if just a little) or sketchy looking, they will refuse to fill. Propane tanks also have markings that indicate manufacturing dates so fillers can tell how old a tank is, even if repainted to look new. Here's a page that explains all that:
How to tell if your propane tank is expired and what to do next.
Here's two of my tanks, though I see I may need to look further for mfg dates, perhaps.
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Also - in wandering all over the country, I've always been able to find a place that will refill, which is most always less expensive in amt of fuel received than exchanging. There are a ton of articles and examples online about that. Places to refill are usually easy to find in most cities and especially near popular recreation areas, as a lot of RVs and motor homes have tanks that can't be exchanged.
I'm not fond of the exchange places with tanks in cages outside that you just swap your tank for another and pay inside.
I use a fair amount of propane when adventuring, for cooking, heat, for my propane fire ring in places that don't allow wood fires because of fire danger. I even use propane for lighting scenes in photography like this (propane fire ring as only light source illuminating the brush and this side of the trailer, with a little LED in the RTT):
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