Which mode acts like the cruise control on your vehicle, but maintains a set psi instead of mph?

• A. Auto mode
• B. Speed mode
• C. Cruise control mode
• D. Pressure mode

Answer: (D)

Maintaining a set discharge pressure with a pump is like cruise control for a vehicle, but instead of locking in a speed, it locks in a pressure. In this mode you set a target psi at the discharge, and the pump automatically tweaks throttle and valve positions to hold that pressure as demands change downstream. If you open more hose or a larger nozzle (which increases losses), the pump increases flow or engine speed to keep the pressure steady. If demand drops, it reduces flow to avoid pushing the pressure higher than the target. This keeps the nozzle operating at a consistent, predictable pressure, which is crucial for reliable stream performance. The other modes don’t specifically target keeping a fixed psi, so this one matches the scenario best.