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Learned some stuff about 20 lb propane tanks today

Discussion in 'Everything Else (off topic)' started by bogydave, Jul 28, 2014.

  1. bogydave

    bogydave

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    Had 2 tanks needed filled.
    $4.50 / gallon here

    Guy says one tank has expired & need rectified.
    That meant my tank was out of test date which is
    12 years from the Mfg date stamped in the collar.

    His solution was to take the expired tank Walmart & exchange it for a full one.
    $20.50.

    Got one filled at the gas place, 4.5 gallons

    exchanged other one at Walmart "Blue rhino."
    I refused the first tank she offered, it had a Mfg date of 2001 (+ 12 year = expired in 2013)

    Brought home & weighed the bottles.

    LP is (4.2 lbs/gallon at 60°f, )

    Bottle has a TW weight (empty weight) stamped in the collar,
    One at gas store, 19.0 lbs empty weighed 38.2
    = 4.57 gallons of LP ($20.25)

    Walmart , empty weight 16.6, bottle weighed 31.8
    = 3.61 gallons of LP ($20.28)

    cylinders are tested at 240 psi (stamped on collar)
    MFG date (stamped in the collar)
    WC is water capacity in lbs. (volume of the empty tank) 5.6 gallons.
    Tank to be fill with 20% space left for temperature expansion. (4.5 gallon tank )

    Learned I get a full tank 4.5 gallons) at the LP store &
    & a gallon less at Walmart & the propane R&R places , HD & Lowes

    Just go and R&R the tank when it's near the expiration date &
    check the date on the tank when you do ,
    in case you are like me, & get them filled at the LP store. They won't fill an expired cylinder.
    You get a gallon less but now have a tank that can be refilled.
     
    savemoney, Boog, HDRock and 4 others like this.
  2. bocefus78

    bocefus78

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    My fill site will fill about anything. And like you, they fill it full.

    The exchange tanks say right on them it's only 15lbs.
     
    HoneyFuzz likes this.
  3. mattjm1017

    mattjm1017

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    I take mine to BJs to get refilled and they put them on a scale.
     
    cnice_37 likes this.
  4. My IS heats my home

    My IS heats my home

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    Interesting, I never got into the logistics of propane tanks and filling them.
    We use blue rhino here, it's more of a matter of convenience than anything.
    Never knew about the 12 yr rule and stamp on the tank. We pay 19.95 for the
    exchange here. I used to go to a refill station and would watch the attendant
    place the empty tank on the scale and fill it until the scale started to level out.
    I never looked at the weights, they could have run a racket with that.

    Thanks for sharing that.
     
  5. bogydave

    bogydave

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    You're right.
    Pays to read labels. :)
    ~3.5 gallons
    $20/3.5 = $5.60 per gallon

    DSCF3473.JPG
     
  6. JustWood

    JustWood Guest

    I haven't paid for 20lb propane in 15 years.
    I use them in place of acetylene and grilling and a future wall heater . Prolly have a lifetime supply.
    Crazy how many get throwed in dumpsters half or 3/4 full.
     
    mattjm1017 likes this.
  7. cnice_37

    cnice_37

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    Yep, stinky job. I always remember being told fill them to 38lbs and shut her off. That was 10+ years ago, the tanks seem heavier now. :p
     
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  8. Trundle

    Trundle

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    I just had to refill one of my 20lb. tanks today. The propane shop in my town has a 10$ Tuesday year round deal, so I just wait for a Tues. and give em my 10 bucks. They also stamp a little card every time and the 10th refill is free.
     
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  9. lukem

    lukem

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    Had mine filled for $14 tonight. 4.4 gallons.
     
  10. nate

    nate Banned

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    I got my BBQ tank filled around 2 weeks ago. They have never checked the date. Usually crack open a screw on the top to fill, not sure if that is normal? They put 4.8 gals in it and it was about $20.

    I just went and checked my tank out of curiosity and it has 01-99 manufacture date. :whistle: I'm actually suprised cause it looks almost brand new. Looks just like this:
    [​IMG]
     
    Last edited: Jul 30, 2014
  11. Trundle

    Trundle

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    Nate. The screw is just a bleeder valve. As the tank gets close to full, you open that valve a half turn or so and when propane starts spitting out, she's full.
     
  12. Fanatical1

    Fanatical1

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    Yea.. Many of the exchange places only fill to 15lbs... Not many people realize this, as they don't want you to know.
     
  13. bogydave

    bogydave

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    That's how they know there is 20% of room for expansion :)
     
  14. MasterMech

    MasterMech The Mechanical Moderator

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    If you're getting LP out the bleeder, you are a little beyond full, lol. The bleeder is really only necessary if the tank needs to be purged.
     
  15. nate

    nate Banned

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    Dunno, they fill till liquid comes out if that.
     
  16. Trundle

    Trundle

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    The stem of the bleeder drops down the tank a few inches. When LP comes out at the screw, it means your tank is "full" while still having the necessary headspace. Now, if you don't use the bleeder and get LP coming out at the main valve, then you know it's at true full......bad idea.

    edit: the OPD valve has overfill protection built in as well. The main reason propane dealers can't/won't fill bottles with the old valves anymore.
     
    Last edited: Jul 31, 2014
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  17. chris

    chris

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    One dealer I used to go to for all my tank refills( welding and Forklift) won't refill 20lb's at all. Switched to a different gas distributor, first guy was getting bit uppity in prices any way.