G.B.
There's no difference. When the valves are put in they are meant for natural gas. Propane has a different....texture?...weight?....substance?....I don't know what it is but the valve isn't the right size for the propane to come through at the right speed.
SO the different adjustment allows it to come through at the comparable rate as natural gas. It's not bad, when the tank is getting low you'll notice a very stinky smell. They add this to the tank so you can smell when it's getting low and notice. Then they'll need to come out and top you off.
My hints and hopefully helpful comments:
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We ran out of propane 3 times this winter. My father in law has a larger house and keeps his thermostat set nearly 10 degrees warmer than ours. He hasn't ran out even once. Our house is almost all electric too. Only the heater and stove/oven are gas. Nothing else. We should not be running out of propane at all.
If you're using too much propane find out why! Have your plumber come out and disconnect the propane tank then run a pressure test to make sure you don't have a leak in the lines the plumber installed.
If his pressure test is okay then call the propane company and insist they come out and do testing on their tank and connections.
They'll blame each other. "their lines are leaking not mine" "Not my issue, our pressure test shows our lines are good!"....blah blah blah.
If it can't be figured out then you might have to have the propane company come out and get their tank. Have another one put in. If the same thing happens with a different company it has to be an issue with the plumber's lines.
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Propane is sky high right now.
It cost us almost $2000 to fill our tank recently. We can't afford that. It's already down by 50% too.
If you watch your tank and propane prices fill it as much as you can when the prices are down low. Very low. Then when it gets cold you'll already have propane on hand.
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My father in law got a whole house propane powered generator installed a few years ago after a huge ice storm hit OKC. It switches on every Tuesday at noon to cycle and do a self diagnosis. If the power goes out it automatically switches on until the power comes back on. He can successfully have power a week or so depending on what he's running and how full the tank is. We all go there when the power is out. We don't run the TV's and excess stuff a lot during these times. We want the propane to last as long as possible.
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If you can, do electric hot water or on demand hot water that's gas. It is so nice to have good hot water that lasts a long time but doesn't use the propane.
Our electric dryer is awesome, I don't think I'll ever go back to gas. I grew up with a gas dryer and always demanded gas dryers as an adult. When my father in law bought me a new huge electric Samsung dryer I was annoyed. BUT when a load of jeans was dry before my washer was even done with the next load I was sold. I'll always use electric dryer's now.
I save propane too.
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By having the propane leak/issue we've spent over $2500 on propane since November. The tank we got when we moved in lasted all last winter, summer, and fall....now we've used 3 tanks in 3 months. That's an obvious issue. Don't let them walk over you. Make them find leaks and reimburse you.