When considering a concentrator or a generator, please be sure you understand the requirements for your particular torch.  Torches consume a certain volume of oxygen in order to produce a certain flame.  The oxygen consumption (flow rate) is measured in cubic feet per hour (CFH) or in liters per minute (LPM), and will change according to the application.  For example, a torch that consumes 40 CFH while running a hard driving flame used for large borosilicate work may only consume half as much or less when running a smaller, softer flame used for soft glass work.  Torches also require that the oxygen be delivered at certain pressures.  The oxygen delivery pressure is measured in pounds per square inch, or psi.  Some torches may require a higher delivery pressure, but a lower overall volume of oxygen (as indicated by the oxygen consumption flow rate) to operate.  And conversely, some torches may require low pressure, but higher overall volume.  This is why you should know both the flow rate and the pressure for your particular torch.

When you research the different generators and concentrators (there are many on the market), look at the numbers.  Look at the flow rate, it is measured in LPM (liters per minute).  Don’t worry if you only have the flow rate for your torch in CFH – it is simple to convert to LPM.  Here is how you do it:

1 cubic foot (CF) = 28.31 liters (L)

Take the cubic feet per hour (CFH) and divide by 60 to get cubic feet per minute (CFM).

Take the CFM and multiply by 28.31 to get liters per minute (LPM).

or... if you just want a rough approximation, the quick and dirty formula is:

CFH / 2 = LPM

Now, look at the psi (pounds per square inch).  You may see something like, “7-9.”  What does that mean?  It means the minimum pressure would be 7, but while working, can fluctuate somewhat up to 9.  This is where it is important to know what your torch requirements are.  A minor burner would not require 20 psi, but a major burner would!

Besides knowing what you have, you will also want to take into consideration your plans for the future.  Where you are going?  What are your goals?  If you know you will be working boro within a year, you may outgrow your 5 liter concentrator really quickly.  You may want to consider buying a larger, more efficient unit from the start.

We are happy to help you and guide you in your selection (there are so many), but you need to help us, too, by doing your "homework."

 

 

The New Regalia by SeQual

SeQual, the makers of the Integra10, have come out with a new unit called the Regalia.  This concentrator puts out an impressive 10 LPM at 7-9 psi, just like the Integra 10, but is equipped with special features engineered especially for lampworkers...

 

Quality Refurbished 5 LPM Concentrators

Do you run a small torch but want to get away from the hassle and expense of tanked oxygen?  Take a look at what a 5 LPM concentrator can do for you...

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FOR HOBBY/INDUSTRIAL USE ONLY
 

It is illegal to use units sold by Pyronamix for anything other than hobby/industrial use...i.e., lampwork, metalwork, glassblowing, etc. None of the machinery on this site is meant for medical use.

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Last modified: 09/03/06