Etiquette if the shop doesn't fill the tank completely

[Superlyte27]

A huge chunk of that was having the city come out and put in an electrical box large enough for the continuous blend system.
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My continuous blend system runs on about 8 amps of 110v

 

[VikingDives]

Thinking this over, I must say that's just an extraordinary amount to spend on a compressor system, whether it's set up for continuous or partial pressure blending. By itself it will essentially never pay them back in fill charges. As part of the overall business plan, it will still take a Long Time. I have to wonder what, exactly, they got for their $150K.

 

[Tracy]

At My shop we charge by the cu.ft. for all our gasses; we fill all tanks in a water bath @70f to pressure and tank is not released back to customer until the tank is at desired psi and it is @70f +/-5. An AL80 takes about 28min. Steels take a little longer as they take longer to dissipate the heat from filling. All our banks air and 36%are at 5k and can fill up to 5 tanks at a time.

I just throw all the tanks in direct sun in a parking lot and hook them all together. I can fill about 15-20 at a time. It is a really horrible way to do it, but remote operations require creative solutions.

 

[MaxBottomtime]

My continuous blend system runs on about 8 amps of 110v

The one at my LDS takes up the entire length of that building.

 

[Tracy]

The one at my LDS takes up the entire length of that building.

That seems rediculous. I am very curious about what they are running. I have sticks on some compressors, a nuvair membrane unit, and a home made concentrator membrane system. None of them are huge or require much power.

 

[greeniguana]

My only issue is that most shops in FL that charge by the cubic foot are more expensive. Doing it this way ends up costing about the same as shops that charge a per tank cost. Way more if you have a fill card. It's usually a wash.

 

[Superlyte27]

My only issue is that most shops in FL that charge by the cubic foot are more expensive. Doing it this way ends up costing about the same as shops that charge a per tank cost. Way more if you have a fill card. It's usually a wash.

I disagree completely. Please explain your math.

 

[Ukmc]

Are shops not just filling to 3300-3400 and letting them cool to proper pressure? This isn’t rocket surgery.

For the record, if my shop short fills you. Please call me and let me know. I’ll make it right.

407-304-9288 Peter
Adventures Underwater

Rocket surgery???

 

[Superlyte27]

My only issue is that most shops in FL that charge by the cubic foot are more expensive. Doing it this way ends up costing about the same as shops that charge a per tank cost. Way more if you have a fill card. It's usually a wash.

An empty AL80 at 13c/cu’ for Nitrox is about $10. That’s for Nitrox. And that’s if it was slap empty. How’s that more expensive than a flat $15 (the going rate around here)

 

[greeniguana]

An empty AL80 at 13c/cu’ for Nitrox is about $10. That’s for Nitrox. And that’s if it was slap empty. How’s that more expensive than a flat $15 (the going rate around here)

Places near me are $10 or less.

So OK, filling a set of doubles is cheaper by the CF, as long as you don't need more than 117.64705 cf to fill them. *at 0.17/cf*

Some "by the cf" places also have a minimum fill charge too.