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Regulator Troubles

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Regulator Troubles

Unread postAuthor: skyjive » Thu Nov 20, 2008 2:31 pm

So after much scouring of the internet I can't seem to find an affordable high-pressure co2 regulator. I'm looking to make a high-pressure copper gun running off co2 so I need a regulator that will give me an out pressure of several hundred psi, but the best I can find is 160, which is too low. I'm sure someone has been in my shoes before and any wisdom would be appreciated.
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Unread postAuthor: Gippeto » Thu Nov 20, 2008 2:42 pm

Not sure how the size would affect your plans, but I use a nitrogen regulator purchased new on ebay.

Cost about $100 shipped.

Inlet pressure is a max of 3000psi, outlet pressure is 450psi.

Works very well with co2, but it is much bigger than those designed for paintball. (palmer stabilizer, etc.)

What is your idea of affordable?

OR, you could build a stirrup pump.
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Unread postAuthor: Hubb » Thu Nov 20, 2008 3:04 pm

Look for a Palmer's Stabilizer. That is the best (IMO) CO2 regulator on the market and would be ideal for your needs. Their site has several different ones to choose from.
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Unread postAuthor: jitup » Thu Nov 20, 2008 3:08 pm

out of curiosity dose anybody know the amount of pressure in a 20 oz co2 tank? :?
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Unread postAuthor: Lentamentalisk » Thu Nov 20, 2008 4:35 pm

it is the same as any other CO2 tank, as CO2 is stored as a liquid. The pressure at room temperature will be between 800 and 830psi, but it will drop substantially lower if you use it quickly, and thus the temperature drops.
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Unread postAuthor: skyjive » Thu Nov 20, 2008 5:18 pm

@ gippeto:
Aren't the valves on co2 and nitro tanks different, so wouldn't you have compatibility issues with threading on your regulator? I could go for anything not significantly over $100 if you have a specific model to recommend

@ hubb:
I want to run my gun off of a bulk tank (e.g. 5 lb) of co2. Would a paintball regulator be compatible with this type of tank or are they only good for the smaller (e.g. 20 oz) paintball co2 tanks?

Thanks for the help guys
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Unread postAuthor: Gippeto » Thu Nov 20, 2008 7:11 pm

The tank fittings thread into the regulator. (1/4"npt)

Try your fitting first, if it doesn't work, you should be able to get the correct fitting from where ever you get your bulk tank filled.

This is the same as the one I have.

http://cgi.ebay.ca/SMITH-30-450-580-NIT ... 240%3A1318


Or there is this one for less $ (I think it might be only 400psi outlet though)

http://cgi.ebay.ca/Uniweld-Nitrogen-Reg ... .m20.l1116
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Unread postAuthor: Hubb » Fri Nov 21, 2008 8:02 am

A CO2 regulator is a CO2 regulator. The Stabilizer will work either way, and so will any other CO2 regulator. Just make sure it is CO2 compatible. A lot of nitrogen or compressed air regulators will be damaged by pushing CO2 through them.
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