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Old Oct 13, 2009 | 11:00 AM
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Default Nitrous on the street

I'm in the middle of my nitrous install and I had a question pop into my mind. Is it safe to leave the bottle closed with the automatic bottle heater on? I want to have my system ready just in case I run into a Z06 (or something like that), but I don't want to waste nitrous by continually filling my lines and not using it. I know I will need to purge to get the air out of the lines, but like I said, I want it to be ready at a moment's notice.

Bottle will be mounted in spare tire area with remote bottle opener.
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Old Oct 13, 2009 | 11:16 AM
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im pretty sure if the valve is closed the heater will not come on. the heater needs to sense pressure before it will activate and with the valve closed there will be no pressure to read. i could be wrong though.
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Old Oct 13, 2009 | 11:23 AM
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Mine will come on with the bottle closed, but i certainly would never leave it on for very long.
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Old Oct 13, 2009 | 11:23 AM
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Originally Posted by JAX04
im pretty sure if the valve is closed the heater will not come on. the heater needs to sense pressure before it will activate and with the valve closed there will be no pressure to read. i could be wrong though.
Good point, I did not think about that.

Edit, my sensor is on the bottle itself, so it will read properly.
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Old Oct 13, 2009 | 11:25 AM
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Originally Posted by 2002t/a06
Mine will come on with the bottle closed, but i certainly would never leave it on for very long.
Why not?
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Old Oct 13, 2009 | 11:27 AM
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Depends on if your pressure sensor is before or after the valve.

If it is before the valve then there shouldn't be a problem. It will just keep the bottle at whatever the preset pressure is.
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Old Oct 13, 2009 | 11:42 AM
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Originally Posted by WS.666
Why not?
lol I wasnt thinkin when i wrote that, my heater is set at 950psi.
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Old Oct 13, 2009 | 01:03 PM
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You should be fine, just think about the temp outside has a direct effect on bottle pressure, so your heater may shut off at 950. But the heat from the enviroment could push it 1,400 or more. I would think if you have a blow down tube or some type of pressure release you should be ok.
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Old Oct 13, 2009 | 01:27 PM
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Leaving the bottle on is hard on solenoids from what i understand, i never leave my on on the street, however when im cruising down the road i will look at the pressure guage (tunnel mount) and try and keep it around 900-950. Ive heard of a few stories where open bottles caused leaky solenoids.
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Old Oct 13, 2009 | 07:58 PM
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Originally Posted by blubyu02
Leaving the bottle on is hard on solenoids from what i understand, i never leave my on on the street, however when im cruising down the road i will look at the pressure guage (tunnel mount) and try and keep it around 900-950. Ive heard of a few stories where open bottles caused leaky solenoids.
You can leave the bottle heater on without having the bottle open.
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Old Oct 13, 2009 | 08:42 PM
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it will come on with the bottle closed depending how you wires the pressure sensor. I bypassed mine so i could heat it with the bottle closed or open, plus get it up the the psi i want it at. If you leave it on to long with the bottle closed and you actually have a blowdown tube and you forget about it you'll just loose your bottle full of nitrous.
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Old Oct 13, 2009 | 08:52 PM
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Originally Posted by Ruckus46Gt
it will come on with the bottle closed depending how you wires the pressure sensor. I bypassed mine so i could heat it with the bottle closed or open, plus get it up the the psi i want it at. If you leave it on to long with the bottle closed and you actually have a blowdown tube and you forget about it you'll just loose your bottle full of nitrous.
yep I agree with him^^^ but if the bottle blows off it willl scare the crap out of you...if you are standing there or in the car.
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Old Oct 13, 2009 | 09:05 PM
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Get yourself a blow down tube....sounds like you're gonna use it.

-Will
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Old Oct 14, 2009 | 12:40 AM
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i had the same idea, i also have a brand new burst disk that just got to my house...
DONT DO IT!
just keep the bottle full instead so it doesnt have to be heated to get the right pressure...
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Old Oct 14, 2009 | 01:50 PM
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Originally Posted by mitch cobb racing
just keep the bottle full instead so it doesnt have to be heated to get the right pressure...
This is way wrong. First off, the bottle must never be “full” There must always be vapor space to allow for expansion of liquid nitrous. Second, all nitrous users need to know that when both vapor and liquid are present pressure is determined by temperature and is unrelated to the quantity of liquid (fullness).
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Old Oct 14, 2009 | 04:48 PM
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I turn the heater on with the bottle closed all of the time. I got tired of wasting nitrous from opening, purging, then closing the bottle for a race that didn't happen. I also bypassed the regulator to get the pressure where I want it. Just don't forget to turn it off!
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Old Oct 14, 2009 | 09:48 PM
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Originally Posted by Gary Z
This is way wrong. First off, the bottle must never be “full” There must always be vapor space to allow for expansion of liquid nitrous. Second, all nitrous users need to know that when both vapor and liquid are present pressure is determined by temperature and is unrelated to the quantity of liquid (fullness).
dont over-analyze what i was saying. i was just trying to say that instead of always having to worry about the heater that if you keep say 10 pounds of nitrous in a 10 pound bottle, or 15 in a 15 then you wont have to worrry about the heater near as much. yes, if its real cold out you will have to heat the bottle to reach the desired 1000~ psi, but generally a "full" bottle will be good to go. am i wrong?
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Old Oct 14, 2009 | 10:53 PM
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Originally Posted by mitch cobb racing
but generally a "full" bottle will be good to go. am i wrong?
My full bottle today was at 700psi sitting inside my 70* house.

Heater will turn on when bottle is closed but will not turn off when pressure is reached. You must remember to turn off heater yourself when pressure is reached.
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Old Oct 15, 2009 | 07:59 AM
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Originally Posted by Z-28
My full bottle today was at 700psi sitting inside my 70* house.

Heater will turn on when bottle is closed but will not turn off when pressure is reached. You must remember to turn off heater yourself when pressure is reached.
If the Pressure Sensor is located on the valve, then it should read properly all of the time.
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Old Oct 15, 2009 | 12:04 PM
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**Edit, Sorry I had a dumb moment.

Last edited by Silver2000WS-6; Oct 19, 2009 at 07:38 AM.
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