"Rick" wrote in message
oups.com...
Intend buying a new Air Compressor, up to now have used an 8 bar
Clarke
model.

Looking at Machine Mart they have loads of compressors, many with
little difference between them ... looking for a 24 litre air
receiver
.... Again there is plenty of choice .... But the key thing is Air
Pressure ..... majority are 8 bar models 1.5hp ..... but you can
get
10 bar, but they are about 45% more expensive.

I was just about to buy an 8bar 7cfm model on sale as a special at a
big discount, and then chickened out at last moment. (would be more
than double price to get the equivalent 10bar model)

Trying to understand if/why I would need 10 bar, all my air nailers
etc. run at around 6 bar or less.
When do you need 10 bar? .... Assume it can't be for spraying as
here
it would be cfm that is important not an extra 2 bar of pressure.

Anybody any idea ?


If your receiver (tank) is pumped to the higher pressure then you have
more energy stored so a given tool will run longer before the
compressor has to start up again. Few tools 'need' more than 100 psi
and run at a regulated lower o/p pressure, but things like sand
blasters are dramatically more effective above 100 psi

AWEM