Calculate if there is an air pressure drop between the FRL and the tool.
- First, read the FRL gauge value
- Secondly, measure the dynamic pressure at the tool’s inlet
- Then, calculate the difference between the two values to see if there is a drop in air pressure between the FRL and the tool
Identify where pressure is being lost by checking that your accessories have been selected and installed properly.
There are various points to inspect, the main ones being: at the tool inlet, the couplings/nipples and hose connections, as well as the FRL.
To avoid pressure drops you want to make sure that:
- Accessories have the correct diameters and thread sizes/types
- The hose is no longer than needed
- Clamps are properly tightened
Final measurements and adjustments.
Once you are confident that all accessories have been selected & installed correctly, measure once more the dynamic pressure at the tool’s inlet.
You can then adjust accordingly the FRL regulator to ensure you get a reading of 90 psi / 6.3 bars at the tool inlet.
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