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#1720627 - 01/23/09 11:15 AM
Purging New Propane Tank?
DrJ Online   content
Sr HotSpotOutdoors.com Family

Registered: 08/12/04
Posts: 330
Loc: Ramsey Mn
I just bought a new 20lb tank and it has a sticker that says it should be purged by a qualified person before filling and 1st use. What does this mean? any info would be helpfull. Thanks DrJ.

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#1720643 - 01/23/09 11:19 AM
Re: Purging New Propane Tank? [Re: DrJ]
dairyman Offline
Sr HotSpotOutdoors.com Family

Registered: 10/08/07
Posts: 1062
Loc: detroit lakes
take it to your local propane supplier--they'll know what to do
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#1720645 - 01/23/09 11:20 AM
Re: Purging New Propane Tank? [Re: dairyman]
mozy Offline
Sr HotSpotOutdoors.com Family

Registered: 12/10/07
Posts: 409
Loc: Lac qui Parle
I'm not sure exactly what they do, but it was a $6 fee to have it done on mine.
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#1720652 - 01/23/09 11:22 AM
Re: Purging New Propane Tank? [Re: mozy]
BobT Offline
HSO Legacy Member

Registered: 03/20/06
Posts: 7879
Loc: Osakis, MN
My guess is they have to ensure that all the air has been removed and the only thing is in the tank is LP fuel.

Bob

Bob
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#1720665 - 01/23/09 11:25 AM
Re: Purging New Propane Tank? [Re: BobT]
boatfixer Offline
Hot Spot Outdoors Specialist

Registered: 01/24/06
Posts: 2735
Loc: Grand Rapids
Correct. All of the air needs to be purged from the tank before filling.

Good Luck
Bruce Baird

boat_fixer98@yahoo.com
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#1720666 - 01/23/09 11:26 AM
Re: Purging New Propane Tank? [Re: mozy]
Jeremy airjer W Offline

HotSpotOutdoors Pro Staff

Registered: 01/17/01
Posts: 9434
Loc: Mt. Iron/St. paul (deranged)
Some places charge some don't. Basically your tank is shipped with air in it. The air has to be removed (purged) from the tank. The proper way to do it is with a purging device and a twenty pound tank. The twenty pound has propane in it. The device is nothing more than valves and hoses. One hose attaches to your tank. The valves are then used to fill your tank with propane gas until it reaches a certain pressure (we do a thirty count because ours does not have gauges). Then they vent your tank completely. This process is repeated for a total of three times. Once it is done your tank should be air free. If it is not done you will have problems with your flame blowing out if you can even get the appliance lit.

Owner - Half Empty Graphic Design
ASE Certified Automotive Technician - Paramount Auto Service, Hastings Goodyear
13 year member of Hot Spot Outdoors, 1/17/01 - 1/17/14...........thecarguy@q.com
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#1720679 - 01/23/09 11:29 AM
Re: Purging New Propane Tank? [Re: BobT]
croix walleye 6 Offline
HSOShow.com Family

Registered: 12/28/08
Posts: 158
Loc: w.b.l MN
they pressure test tank to make sure its not leaking therefore air will create moisture in tank so you put methanol in tank and and repressurize it to dry out water otherwise overflow valve will have a tendancy to rust up and get stuck
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#1720724 - 01/23/09 11:46 AM
Re: Purging New Propane Tank? [Re: croix walleye 6]
SapperACE Offline
Sr HotSpotOutdoors.com Family

Registered: 05/25/08
Posts: 370
Loc: SW Minnesota
I bought a new 30# tank last year and the guy forgot to purge it before he filled it. He said that he thought it would be ok. I had the tank on the fish house heater and it seemed to work. I hooked it to my grill this summer, however, and it would barely make a flame out of the burner and would blow out easily. Hooked a different tank to the grill and the grill worked fine. I hooked the bad tank back on the fish house this winter and used up most of the fuel in it.

My question is whether or not it can be purged once it has been filled for the first time, or is my tank junk now?
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#1720777 - 01/23/09 12:09 PM
Re: Purging New Propane Tank? [Re: SapperACE]
croix walleye 6 Offline
HSOShow.com Family

Registered: 12/28/08
Posts: 158
Loc: w.b.l MN
yes it can be purged still just make sure you run all propane out of tank before you bring it in
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#1720888 - 01/23/09 01:01 PM
Re: Purging New Propane Tank? [Re: SapperACE]
Jeremy airjer W Offline

HotSpotOutdoors Pro Staff

Registered: 01/17/01
Posts: 9434
Loc: Mt. Iron/St. paul (deranged)
Originally Posted By: SapperACE
My question is whether or not it can be purged once it has been filled for the first time, or is my tank junk now?


If it is working fine now than it is purged. The air has been removed through the use of the tank. If it would make you feel better than run it empty and wait until the temps get above freezing. You don't have to but it will help remove condensation that may be left in the tank.

Quote:
so you put methanol in tank and and repressurize it to dry out water otherwise overflow valve will have a tendency to rust up and get stuck


I'm am not familiar with any standard purging procedure that uses methanol?

Owner - Half Empty Graphic Design
ASE Certified Automotive Technician - Paramount Auto Service, Hastings Goodyear
13 year member of Hot Spot Outdoors, 1/17/01 - 1/17/14...........thecarguy@q.com
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#1721037 - 01/23/09 02:08 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
croix walleye 6 Offline
HSOShow.com Family

Registered: 12/28/08
Posts: 158
Loc: w.b.l MN
work at a rental store for 9 years methanol is only way to remove all moisture out of tank you can leave the valve open as long as you would like but if you dont have an adapter on the valve nothing will come out of tank we bleed air out of tank first then hook up a line with an adapter on it and put approx. 2 tablespoons of methanol in the line and then repressurize the the tank, we bleed out tank again then repressurize 2 more times to remove all moisture
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#1721049 - 01/23/09 02:13 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
FL SNIPER Offline
Sr HotSpotOutdoors.com Family

Registered: 07/21/05
Posts: 680
Loc: Forest Lake, MN
I used to fill tanks growing up...and one thing I thought that always helped increase the performance of the tank was to unscrew the little release valve (screw) when filling tanks, you need a flat head screw driver to do this. Because propane is denser, heavier, then the air that was in the tank, it would force the air out of the tank as you filled it. So each time you had your tank refilled the less regular air would be in there. Not sure this makes sense to anyone but me...but oh well. If you think your tank is not performing at its peak, next time ask the attendant to try unscrewing that screw while they fill it. Like I mentioned...always seemed to work well on the tanks I filled. FL Sniper

THERE'S A JERK ON BOTH ENDS OF THE ROD
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#1721079 - 01/23/09 02:26 PM
Re: Purging New Propane Tank? [Re: FL SNIPER]
croix walleye 6 Offline
HSOShow.com Family

Registered: 12/28/08
Posts: 158
Loc: w.b.l MN
fl sniper on the older tanks you did want to do this but with the new opd valves you donot want to do this on the old tanks you could open up the valve and propane would come out but on the new tanks something has to be hooked up to tank in order for propane to come out and when tank runs out the valve will shut down
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#1721213 - 01/23/09 03:32 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
jigginjim Offline
Sr HSO Family

Registered: 02/06/04
Posts: 4289
Loc: Buffalo, MN, USA
If your tank is not pruged correctly you will not get the proper amount of propane in the tank.

The little kid your take fishing today, could be the one taking you fishing years from now. Jiggin Jim's fishing guide

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Great prices..
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#1721337 - 01/23/09 04:46 PM
Re: Purging New Propane Tank? [Re: jigginjim]
Hafnutz Offline
Sr HotSpotOutdoors.com Family

Registered: 03/09/08
Posts: 552
Loc: St Paul, MN USA
Why not just exchange your tank for one that is already filled and not have to deal with it?

Everyday should be a Saturday.
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#1721379 - 01/23/09 05:36 PM
Re: Purging New Propane Tank? [Re: FL SNIPER]
Jeremy airjer W Offline

HotSpotOutdoors Pro Staff

Registered: 01/17/01
Posts: 9434
Loc: Mt. Iron/St. paul (deranged)
Originally Posted By: FL SNIPER
unscrew the little release valve (screw) when filling tanks, you need a flat head screw driver to do this.


On the other end of the pathway that srew opens and closes is a straw. The straw is calibrated to the tanks maximum full capacity of 80%. When liguid comes out of the hole the tank is full. The straw can become dislodged and overfilling can occur if this method is used to fill so it is typically not used. If you purge a tank by opening the screw and the straw is in its proper place air is trapped above the straw. So thoeretically the tank still has 20% air trapped in it which will exit when you try to use your appliance. There is no need to open the screw when filling a tank.

Quote:
If your tank is not pruged correctly you will not get the proper amount of propane in the tank.


The tank will still fill with its maximum capacity whether or not it is purged.

Owner - Half Empty Graphic Design
ASE Certified Automotive Technician - Paramount Auto Service, Hastings Goodyear
13 year member of Hot Spot Outdoors, 1/17/01 - 1/17/14...........thecarguy@q.com
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#1721481 - 01/23/09 06:50 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
Big Buck Buster Offline
Sr HotSpotOutdoors.com Family

Registered: 03/23/08
Posts: 1282
Loc: Out and about, MN
Originally Posted By: airjer
[quote=FL SNIPER]unscrew the little release valve (screw) when filling tanks, you need a flat head screw driver to do this.

[Quote]
On the other end of the pathway that srew opens and closes is a straw. The straw is calibrated to the tanks maximum full capacity of 80%. When liguid comes out of the hole the tank is full. The straw can become dislodged and overfilling can occur if this method is used to fill so it is typically not used.

On the OPD valves, the straw doesn't matter. When the liquid reaches the float, the valve is shut and you can't get any more in the tank. If the float doesn't work properly, the valve is junk, and needs to be replace. The old style valves you used the straw to make sure that you were getting the tank full other than watching the scale when filling. The OPD valves make the job of filling them a lot easier. I have filled many many lp tanks at my job.
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#1721585 - 01/23/09 08:09 PM
Re: Purging New Propane Tank? [Re: Big Buck Buster]
SapperACE Offline
Sr HotSpotOutdoors.com Family

Registered: 05/25/08
Posts: 370
Loc: SW Minnesota
I wish I could just do the trade thing, but this tank is a 30# tank. If anyone knows where I could exchange a 30#er I would do it in a heartbeat.
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#1721589 - 01/23/09 08:11 PM
Re: Purging New Propane Tank? [Re: Big Buck Buster]
Jeremy airjer W Offline

HotSpotOutdoors Pro Staff

Registered: 01/17/01
Posts: 9434
Loc: Mt. Iron/St. paul (deranged)
Originally Posted By: Big Buck Buster
On the OPD valves, the straw doesn't matter.


It does if the person filling thinks its o.k. to purge using this method.

Originally Posted By: Big Buck Buster
The OPD valves make the job of filling them a lot easier. I have filled many many lp tanks at my job.


You still need to watch the scale!! OPD valves do not gaurantee that the tank will not overfill! It seems like more of them shut off on the light side, but I have also had some tip the scales and have not shut off.

Owner - Half Empty Graphic Design
ASE Certified Automotive Technician - Paramount Auto Service, Hastings Goodyear
13 year member of Hot Spot Outdoors, 1/17/01 - 1/17/14...........thecarguy@q.com
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#1721708 - 01/23/09 09:24 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
Big Buck Buster Offline
Sr HotSpotOutdoors.com Family

Registered: 03/23/08
Posts: 1282
Loc: Out and about, MN
If the tank tipped the scales, I sure hope that the customer was told that the valve needed to be replaced because it was faulty.
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#1721719 - 01/23/09 09:28 PM
Re: Purging New Propane Tank? [Re: Big Buck Buster]
Jeremy airjer W Offline

HotSpotOutdoors Pro Staff

Registered: 01/17/01
Posts: 9434
Loc: Mt. Iron/St. paul (deranged)
Just because it tipped the scale does not mean its faulty. Some end up being calibrated on the light side some end up on the heavy side. Its not a perfect fool proof design. IMO its to prevent the gross overfilling of the tank. A filler still needs to keep an eye on the scale to make sure the tank is filled appropriately.

Owner - Half Empty Graphic Design
ASE Certified Automotive Technician - Paramount Auto Service, Hastings Goodyear
13 year member of Hot Spot Outdoors, 1/17/01 - 1/17/14...........thecarguy@q.com
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#1721780 - 01/23/09 10:03 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
givetoget Offline
Sr IceLeaders.com Family

Registered: 01/01/09
Posts: 305
Loc: Great Old USA
nice try Buck Buster But something tells me you aint going to win this one
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#1721809 - 01/23/09 10:23 PM
Re: Purging New Propane Tank? [Re: Jeremy airjer W]
croixflats Offline
HSO Legacy Member

Registered: 04/27/08
Posts: 5058
Loc: land or sea
Originally Posted By: airjet
Just because it tipped the scale does not mean its faulty. Some end up being calibrated on the light side some end up on the heavy side. Its not a perfect fool proof design. IMO its to prevent the gross overfilling of the tank. A filler still needs to keep an eye on the scale to make sure the tank is filled appropriately.
Whats wrong with a tank that is filled earlY in the day at 0 degrees then it warms up to 30 degrees and as your unloading it releases its pressure on you in the chest as you unload it when the temp rose. It happend to me with a 100# tank, what do ya think went through my thoughts. CABOOM! The elastic band of my underwear is still on display at the Minnesota Historical Museum of Minnesota for the ice fishing display.


Edited by croixflats (01/23/09 10:28 PM)


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#1721832 - 01/23/09 10:44 PM
Re: Purging New Propane Tank? [Re: croixflats]
RonWBasser Offline
HSOList.com Family

Registered: 01/07/09
Posts: 202
Loc: Minnesota, USA
Read all that airjer has to say.

He is correct.
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#1721877 - 01/23/09 11:46 PM
Re: Purging New Propane Tank? [Re: givetoget]
Big Buck Buster Offline
Sr HotSpotOutdoors.com Family

Registered: 03/23/08
Posts: 1282
Loc: Out and about, MN
Originally Posted By: TRB454CASULL
nice try Buck Buster But something tells me you aint going to win this one

I am not trying to win a contest here. I am just stating the facts as they were given to me when I started filling the OPD valves. They clearly stated that if ANY tank that has the OPD valve on it is found to be overfilled due to the float valve not working properly needs to be taken out of operation until the valve has been replaced and retested.
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