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The Flame King YSN401a is a 40-pound steel propane tank featuring a legally required OPD valve to prevent overfilling, ensuring maximum safety. Constructed from high-grade alloy steel with a rust-resistant powder coating, it meets rigorous DOT and Transport Canada certifications. Designed for versatile use, it easily connects to RVs, heaters, and trailers, making it the go-to premium refillable propane solution for professionals and outdoor enthusiasts alike.













| ASIN | B07Q7MCXNG |
| Best Sellers Rank | #62,609 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #41 in Camping Replacement Fuel |
| Brand | Flame King |
| Brand Name | Flame King |
| Capacity | 40 pounds |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 673 Reviews |
| Fuel Type | Liquefied Petroleum Gas |
| Global Trade Identification Number | 00899003000465 |
| Item Dimensions W x H | 12.3"W x 29.3"H |
| Item Type Name | 40 Pound Steel Propane Tank Cylinder With OPD Valve |
| Item Weight | 14.11 kg |
| Manufacturer | Flame King |
| Material | Alloy Steel |
| Model Number | YSN401a |
| Part Number | YSN401a |
| Product Dimensions | 12.3"W x 29.3"H |
| UPC | 899003000465 |
| Unit Count | 1 Count |
| Warranty Description | 30 Day Warranty voids if not purchased from Amazon Retail, Flame King. |
T**.
Quality brand at a great price
Propane is so much cleaner and quieter than using gas in a generator, but these larger tanks can be hard to find locally. This showed up ready to go and seems to be great quality. Same brand they sell at the ACE Hardware near our house
G**C
Works grear!
This is a great product
M**K
Seemed to be priced within 10% or so of a used one. Go figure??
I did the Facebook/Marketplace and Craigslist ads for a used one. So after a few weeks of looking for a reasonable deal, I gave up. Amazon's price on this (and I bought a smaller one as well) was within 10 or 15% more than some beat-up used hand-me-down. Your experience may vary. :) Anyway, works well, looks good and is 100% as well built as any other tank I've ever owned.
C**L
40 lb. Tank
Never had a problem with it.
M**.
Nice tank
I bought it to have a spare and paid the same price as I did for a used one locally that doesn't look as good. So it was well worth the price.
T**G
Tank madness
Well made
S**.
Great tank
I use this for backyard blacksmithing. It is light enough to carry way out in the yard to my mobile forge. Doesn't freeze up quickly like the smaller tanks. Built well, no issues so far. Tip if you're forging for extended periods of time (or any other task). Put small wood planks or similar under the tank if you're using this on grass. Especially in cold weather. If you run this for hours, it will start to freeze on the bottom. It will stick to the grass and rip it up if you don't have something for it to sit on.
A**.
These work as advertised
We got two of these for our off grid property and they work exactly as they're supposed to. If I ever need another propane tank, I'll be coming back to buy this one.
Trustpilot
1 month ago
2 weeks ago