Mr Heater Fuel Keg Propane Tank (questions answered) 

I've had the Flame King system for quite some time now with 20+ 1 lb tanks. They worked well for quite some time then suddenly none of the 1 lb tanks would fill. I was stumped and couldn't figure out why. I assumed it was the refill adapter. I tested it without a 1 lb tank connected and liquid propane would come out just fine. After examining the 1 lb tanks I noticed one tank didn't have the plastic sleeve and O-ring in it. Looking at the refill adapter I found the sleeve and O-ring on the refill adapter nozzle. It came out of the 1 lb tank and wouldn't allow further refills. I now make it a practice to check the 1 lb tank for the sleeve and O-ring after each fill. Check your Flame King refill adapter for the missing sleeve and O-ring, you might just find it there.

I have a BSME degree and worked in many product designs and high volume manufacturing since 1984. It looke like the inner plastic sleeve retention might be THE Achilles heel for this design. I suggest you reconnect with your company contact and ask them to prove/show how this issue is going to be addressed 100% of the time and that change will last over the lifetime of this products usage. Since the plastic sleeve is obviouly inserted into the hole after the shcrader valve is installed, it could easily be held in place with a proper temperature range adhesive and posibly implemented with minimum product design changes - just some factory automation additions. If they don't nip this issue in the bud they will ruin this Product's reputation before it even gets started. That would be too bad becasue there is a huge and growing market out there for such a thing

Just finished watching all four of your videos on this topic while researching refillable 1lb bottles. VERY well done and has given me enough knowledge to make a decision. Thank you for the effort.

The real issue is that both Flame King and Mr Heater use a proprietary system to fill their tanks instead of using a normal standard propane fill valve. Unfortunately you have to commit to either one system or the other if you decide to go with these tanks and then stick with only that valve setup. If you are already invested in flame king, I'd probably skip mr heater at this point unless you want to buy both the bottles and the fill adapter.

ALWAYS, without fail wear loose fitting thick gloves and eye protection when refilling the 1 lb tanks. I put a fresh 20 lb propane tank from one of the exchange places on the Flame King stand and connected the adapter and a 1 lb tank as usual. When I opened the valve on the 20 lb tank, a massive amount of liquid propane shot out from around the valve stem seal. I immediately attempted to shut it off but it was already so cold that my leather glove was frozen to the knob and my fingers were really cold in matter of no time. I assume they didn't check that seal for leaks after refilling the tank. At the rate the liquid propane was coming out it most likely didn't have a seal in at all. If I hadn't been wearing gloves it would've been my fingers frozen to the knob. Replacing that seal and checking for leaks should be a mandatory process when the 20 lb tanks are refilled.

Good information and advice 😊 Thank you 🙏

Thank you for your reviews, comparison, and update!! I'm very glad I watched these before I made my purchase. I was contemplating getting the Flame King at first, but after watching your videos I went with the Mr Heater Fuel Keg system. We do not have a Menard's here in Florida, but I happened to see them at my local Tractor Supply (as Amazon doesn't have them yet). I read the instructions and everything worked as advertised!!! Love these! Thanks again for your videos!🤩

Sincere thank you for the follow up. Sometimes difficult to admit issues are caused by us. It takes integrity to do so.

Thanks for the follow up video. Glad they reached out to you and provided an answer and replacement bottle. Genius idea with the magnets! I’m going to buy the Fuel Keg system.

Thank you for the video! I don’t like high pressure gas but thanks to you I can now safely refill my bottles! THANK YOU SO MUCH!

Thank you.

I like that so much more than the flame king system. I might actually buy some of these even if I have to buy a new filler manifold

Walmart has the Fuel kegs at Walmart ìn Onalaska wis now. Great vid, thanks! Very helpful.

I ordered 10 more Fuel Kegs from Menards today. It's going to be really cold here soon in north Texas and I want to be prepared. The freezing cold weather of 2021 still rings all too clear today.

I’m up here in Canada, after watching your last video I decided I needed to get a few of the fuel kegs for my big buddy heater. I ordered 3 kegs and the refill kit from Menards. Had them shipped to Toronto area. Bought them from Menards website To let my fellow Canadians know it was $200 after duty and taxes. Haven’t tried them yet. Thanks for the video!

Great video. I have the same issue. I retested the tank and even with the sleeve and little o ring, it still leaked propane as you screw it in and stops once it’s fully screwed in. I tested on heaters, camp stove and other camping equipment.i have 4 of the fuel kegs just to be sure. They all did the same thing 😢

Minnesota is finally gonna get normal winter temperatures this weekend! Minus 10 forecast for Sunday night.

Watched all your vids & you’ve done a nice, thorough job reviewing… curious if the tanks work with Coleman camping stoves & propane lanterns.

Thank you for this update. I was the one asking about a kid turning Fuel King ring on your last video. It is good to know that they will not release anything when the tank is not connected to the tank filler. I have a Flame King filler and tanks coming but I will probably buy a Fuel Keg filler and tanks too. I will remember to use the correct filler with each of the tanks. I noted in this video that the Fuel Keg has a relieve valve. Do the Flame King have one?

There now available at tractor supply's stores i have bought 10 so far . Definitely better then the refilling disposal ones .

Just bought 9 of these cans.

I enjoyed your video. Do you know if the plastic insert is available as a replacement part?

Can the adapter be left on the 20 lb. tank and con the 20 lb. tank be left inverted?

We don’t have those around here in north Georgia we got the green 1 pound ones

Was the plastic sleeve stuck on the flame king filler valve?

Stick with whatever you have if it is good for you.

Does the torch work with Colman disposable tanks as good as the map gas yellow tank ? Because that doesn't make any sense... Researching to buy... I appreciate your time spent in responding, thanks

Do The FUEL KEGG S COME WITH THE CAPS .. Thank You. Excellent Video 👍

Since Mr. Heater contacted you about the issue, did they provide you with a fix for that other tank or even a replacement?

Watched several related videos before stumbling into your first regarding the fuel keg. The culmination of your videos are informative and much appreciated. I'm glad to see the innovation produced by Mr. Heater but the fact that they've made it more propietorty rather than universal is a huge turn off for me.

Any luck finding a torch that will work properly with this keg? Thanks!

I noticed when I started using the flame king ones on my grill and big buddy heater that both appliances seemed to run hotter compared to the non refillable ones. Maybe the flame king is un regulated? Either way it's. Ice to have another option.

great info thx - how about coleman camp stove ?

Can you get replacements for the plastic insert???

Interesting. I wonder if bleeding the air off causes less pressure/ less fills in the long run I've done the disposable for years and can only get around 14 from a 20 lb tank. Hopefully you'll test that next

*Question : does your Fuel Keg's wobble ? Because mine do !* I just bought three of these from Walmart and discovered upon returning home that the bottom ring that acts as the stand, which has all the DOT info stamped into it are less than stellar welding. Meaning they wobble standing up right, one egregiously so and the other two not near as much but still not flat....

As for the sleeves on the tanks and on the filler valve. Looks to me like it's not just a sleeve but also a black rubber washer ring, not just the sleeve. As for the magnets....I hope that's OK, thinking maybe you could get a spark by using them? Maybe ask the manufacturer that ? Just to be sure.

Did you try it on another blow torch attachment?

I just contacted Mr heater but I bought their filler and 2 kegs and the second keg after filling came off with no insert or oring. It was still stuck on the fill valve.

Can these ONLY be refilled with the Mr Heater refill kit? Or can you use other refill kits by other manufacturers?

I just bought a 4pk. I didn't realize they came empty 😢

Are these compatible with 2 burner Coleman stoves like the Coleman classic/triton? I'd assume they are but would like confirmation before spending $100+

What happens if you turn the bleed petcock while it is threaded onto torch, heater or grill? Seems to me that the real danger is an accidental bleeder valve opening while a unit is running with open flame.

Regarding your torch, doesn't a MAP valve work differently from a Propane device? Could that have been the problem?

Will they work with are propane augers jiffy or eskimo

Do we need to use a filter when filling these up?

I get 3 of the bottles the I filled up does not have the plastic piece in it I checked the other 2 and they have the plastic piece in them and I used the Mr heater refill kit so I don’t thank the plastic piece was in it wind Ibought them

I agree with you on the disposable ban. I don't believe they'll be around much longer. The magnet 🧲 idea's pretty cool.

whew are you getting the Fuel Keg bottles, it looks like they are only available from Menards, no Menards in Arkansas

I have around 15 of the Flame King refillables and their fill adapter. If the Fuel Keg requires a different adapter to fill their tanks I'm out...

I'm sorry, Mister Heater... The fragility of that plastic sleeve is a big turn-off, for me.

They fall out had it happened to me

........