Propane storage and distribution - Page 2

dbhost · 02-22-2018, 11:38 AM

Quote:

Originally Posted by brokedown

They're not supposed to accept an outdated tank at an exchange place but let's be honest, you're dealing with a gas station employee. I can swap a tank for $15 at the local Piggly Wiggly.

The ones near me all advertise that they will take any 20lb tank as exchange...

If it weren't for that, I wouldn't even consider exchange as you end up 5lbs short for more money...

https://www.homedepot.com/p/AMERIGAS...204S/202317242

"We accept any tank, no matter the condition"

I've gotten tanks from them in the past for other applications, that were recertified.

My existing tank is good and past date, as soon as the propane is out, I need to do an exchange, might do it sooner as I don't think I have more than about 2lb left in there...

brokedown · 02-22-2018, 11:49 AM

I really lack a good way to measure how much propane I have. I have a pressure gauge but that's almost useless. That's an up side for having your own tank, you can accurate know its empty weight.

dbhost · 02-22-2018, 11:50 AM

Quote:

Originally Posted by Dave in Tucson

Ok, I'm looking at horizontal propane tanks, and my confusion is due to various capacity advertising.
Some tanks are listed by gallons, some by pounds, and some by dimensions. The one I'm looking at is 14" dia (approx) by 40", made by Manchester. How does this translate to gallons or pounds?

That would be the 100 lb cylinder, and from what I can see on the Manchester web site, all of their 100 lb cylinders are vertical, not horizontal units...

Not really sure if you are going to be able to find a 100 lb horizontal orientation propane tank.

Twigg · 02-22-2018, 11:56 AM

Easiest arrangement is simply three 20lb cylinders.

Keep two hooked up with a spare. When you change one out you have an empty tank to exchange at Wal-Mart or where-ever.

It's not the absolute cheapest way to do it, but it is very convenient and you are limited only by the number of cylinders you want to carry.

Dave in Tucson · 02-22-2018, 12:34 PM

Ok, don't know how to post a link, but this is on Amazon.
Manchester (682

14" x 40" ASME tank. At the start of the description section, says it is 16.36 gallons, 81 lb.
Kind of confusing, but later in the description, it says product dimensions are 36.5" x 15.3".

Dave in Tucson · 02-22-2018, 12:35 PM

That is supposed to be 6828.

brokedown · 02-22-2018, 01:02 PM

I think this is the tank you're referring to: http://amzn.to/2CECpMA

I hadn't even shopped for propane tanks before but I've got sticker shock looking at that sucker!

Dave in Tucson · 02-22-2018, 01:04 PM

Yeah, I've been looking for it on the Manchester site, but can't find it. Maybe it's new?

rhbcub · 02-22-2018, 01:20 PM

Couple of quick things. I'm a newbie here, but something of an expert in Propane applications ( if I do say so myself lol )

Quote:

Originally Posted by Dave in Tucson

My plan was for 2ea 100 lb propane tanks in the below floor storage area on my bus, with a line up through the floor, to a black iron line in the bus, to a manifold

Do NOT use iron pipe. Use steel. Typically black malleable steel pipe is what you want. There is other acceptable piping/tubing, but wanted to be clear on this. Your hard pipe for propane should be black steel. Maybe that was just a mistake when you typed iron instead of steel, but thought it should be mentioned.

Quote:

Originally Posted by dbhost

I wouldn't think a vertical tank should be used horizontal. You'll end up with liquid coming out when it should be vaporized gas. There are plenty of 100lb horizontal tanks on the market, It would be best to go with what is designed for that application.

Exactly. Propane tanks are designed to deliver either liquid or gas (siphon tank vs No Siphon tank) and turning a no siphon tank on it's side will cause it to deliver liquid instead of vapor. This is bad in
this type of application. Your normal 20# cylinders that can be purchased dang near everywhere are No Siphon, and designed to be upright.

o1marc · 02-22-2018, 01:55 PM

Quote:

Originally Posted by Dave in Tucson

Ok, I'm looking at horizontal propane tanks, and my confusion is due to various capacity advertising.
Some tanks are listed by gallons, some by pounds, and some by dimensions. The one I'm looking at is 14" dia (approx) by 40", made by Manchester. How does this translate to gallons or pounds?

Volume would be 3.56cf or 26.65 gallons or 112lbs.

dbhost · 02-22-2018, 02:15 PM

Quote:

Originally Posted by o1marc

Volume would be 3.56cf or 26.65 gallons or 112lbs.

Remember to allow for expansion of the gas / air in the tank, 100 lbs would be the nominal size. Just like a 2x4 isn't really 2" by 4".

dbhost · 02-22-2018, 02:16 PM

Quote:

Originally Posted by Dave in Tucson

Yeah, I've been looking for it on the Manchester site, but can't find it. Maybe it's new?

I was looking at POL tanks, not ASME tanks... Sorry about that...

Per the MFG and Amazon description, that's an 81 gallon tank.

o1marc · 02-22-2018, 02:36 PM

Quote:

Originally Posted by dbhost

I was looking at POL tanks, not ASME tanks... Sorry about that...

Per the MFG and Amazon description, that's an 81 gallon tank.

No, it's 81 pound tank, 16.36 gallons.
Sucks i
I can't find it now, but found a nice white 60lb horizontal tank for just over $100 I plan on mounting under mine.

dbhost · 02-22-2018, 02:40 PM

Quote:

Originally Posted by o1marc

No, it's 81 pound tank, 16.36 gallons.
Sucks i
I can't find it now, but found a nice white 60lb horizontal tank for just over $100 I plan on mounting under mine.

Derf.... I mean pound... although 81 gallons would be rather impressive...

o1marc · 02-22-2018, 02:49 PM

Quote:

Originally Posted by dbhost

Derf.... I mean pound... although 81 gallons would be rather impressive...

And from the sound of it, a fill up would last the life of the vehicle.

Dave in Tucson · 02-22-2018, 04:43 PM

Quote:

Originally Posted by o1marc

And from the sound of it, a fill up would last the life of the vehicle.

LOL!
I get the impression that the tank linked to above is meant as a fuel tank for a propane powered vehicle. It does not have a "dial chamber", whatever that is.
But, in my browsing, I found a similar sized tank under the Flame King brand, model YSN293, 29.3 gal capacity, 48" x 14.9", with fittings and brackets. Pretty similar price, too.
Can anybody explain to this dummy what a dial chamber is?

rhbcub · 02-22-2018, 09:15 PM

Forgot, I meant to mention earlier...somewhere earlier in the thread was a question about gallons and pounds. Propane is sold by the pound. There's a lot of good resources out there, but if you're measuring by pressure (common) or by volume (very uncommon, in my experience) then temperature is the variable that will let you convert.

Here's one resource. There are many others. http://www.peconet.com/products/root...ins/rm-135.pdf

rb

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