What is the nozzle pressure for 65mm Hi-Combat?

• A. 500 kPa
• B. 700 kPa
• C. 600 kPa
• D. 800 kPa

Answer: (B)

For this nozzle and hose combination, the recommended setting is 700 kPa. This pressure is tuned by the nozzle’s design to deliver the intended water pattern and reach for a 65 mm Hi-Combat handline, balancing flow rate with controllable spray. If you operate much lower than this, the stream loses reach and the pattern becomes less effective for cooling and knockdown. If you push it higher, you can encounter excessive friction losses, poorer pattern quality, and more recoil, without gaining meaningful benefit. So the 700 kPa setting is the optimal choice for reliable performance. (700 kPa is about 100 psi.)