We do not sell a valve for a 100 gallon tank.
Yes, this tank is good for 12 years from the date of manufacture and then it needs to be tested and re-certified.
Talk to an RV dealer. I don't see a problem, but I don't know if flow or pressure will be too high for a stove. I run a Miller welder off of it. I think the limit will be the plumbing on the stove.
Yes you can use it for your barbecue grill although you would need to have an Converter adapter installed to make it go from liquid/vapor gas to the type of gas you need for your grill Considering none of the hook ups on it can connect to your barbecue grill that should be obvious but I highly recommend you go to your local propane dealer and have it professionally installed so as to have no accidents Otherwise carefully follow instructions provided in a video by a professional shouldn’t be too complicated As far as the the converter component you would require goes you can find them for a fair price online on almost any website you
No, they don't sell LP gas.
Yes, you can position it anyway, it is a gas when it comes out not liquid.
I was told about 8 gallons.
This tank should not be used for a gas grill. It is designed specifically for a forklift. It is a liquid draw tank, unlike the regular propane tanks that are a vapor draw. This would be dangerous to be used for a grill. Besides, this is way more expensive than a regular propane cylinder. Even if you want a larger tank you can buy the 30lb tanks for a lot less than a forklift tank.
Steel. Powder coated.