Looking at compressor today used in a dealer workshop, checked the full cut-out pressure and this was 1000kPa (150PSI) the tank is about 1.5mtrs x 500mm.
You can understand why tyre shops and work shops can over tighted wheel studs with a impact wrench, when the tank is at the maximum pressure.
Except, of course - as you've been told by several people several times
- the output to the tool is regulated down to about 6bar. Oh, yes - and the ratchet itself has adjustable max torque.
Well NO - I can assure you - there was no regulator before the output - only a water catcher and oiler.
Oh, yes - and
But do they use it? - NO - its kept on max to remove the wheel nuts and any stubborn bolts. There is a 3/4 impact wrench used on it as well off a 1/2" line.
As you already know the size of Landrover wheel nuts - all the pressure is required to undo these.
The service lines were 2" pipe from the compressor into 1.25" down pipes. Hose reels were 3/8" lines. So there was not much pressure loss in the workshop.
That is certainly not a typical set up. and no decent workshop would let the public wander around. In the event of an air related accident there would be questions asked by the HSE and the insurers.
I'll be the outlet on the compressor was regulated. There's two on mine
- one regulated, one unregulated.
On my 150L compressor there is also no regulator on the output, so I have one externally, about 1 meter away, wall mounted. The workshop may have a similar arrangement, with the regulator nearer the work area.
ui can think of a few that do.
Yes, but that's because you've had an accident.
Well the workshop manager might have a lot of shares in the local IR dealership.
Quite above board for me to walk around in this workshop. - covered
No looked again today - the only regulators are for the five oil pumps. They need the 150psi to remove some items and will wait till the compressor cuts out when max press is reached.
I'm actually pulling the whole system out as they are shifting workshops. The oil lines are now down. Air tomorrow cause I'm using it to dismantle. Not sure what the system is at the new place but I guess that I may have a look at it tomorrow or do a reinstall.
I have smaller compressors 8cfm (80psi cut in 100psi cut out) at home and connect them up to a regulator/watertrap, one side is unregulated the other regulated for spray painting.
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