Propane Bar B Q regulator?

Someone is looking for a replacement BBQ regulator which I 'presume' they need as a replacement for their own BBQ. I have two from scrapped units and am prepared to give them one of them. However; I notice that at least one of the regulators is marked "Outdoor Use"; so I'd like to check why. Can anybody confirm that the reason they are marked 'outdoor' is to ensure that they not be used on an inside appliance such as a cooking stove in a camper or boat? What I've heard is that these simple BBQ (single stage?) regulators are not safe for 'inside use' since, if they did 'let go' high pressure gas could be supplied to the appliance thus causing it to flare up etc. Am I on the right track? Any advice welcomed. Terry.
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This is Turtle.
NO propane regulator is not safe inside a home at all. I could take up a bunch of bandwide explaining why but You just don't do that for it is unsafe to do so.
Yes your on the right track about the regulator leaking and flaring up and burning the house down. If the rubber diafram should bust it will start spraing a very good amount of gas out the regulator weep hole and into the room. Then BOOM.
If your going to bet your life on getting killed with a old second hand regulator when walmarts sells them for $6.00 to $10.00 as brand new replacements. I would not take a chance on the old ones. If you feel lucky go for it.
TURTLE
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