The amount of internal air pressure is regulated by nozzle size.
- Increase the nozzle size to reduce pressure inside the bit
- Decrease the nozzle size to increase pressure
- Nozzles sizes are determined per rig
Consult with your Tricon representative or bit manufacturer prior to changing nozzle sizes. Tricon will organize an air test to confirm the correct nozzle size for your specific application.
Nozzle the bit to achieve pressures of approximately 35-40 psi (2.4-2.8 bar) in the drill bit.
Note that cab pressure gauges can read significantly higher than this value. As a rule-of-thumb: the difference between cab and at the bit is 8-10 psi (0.5-0.7 bar).