Before flowing 1000 gpm, the Master Intake must reach which psi before boosting may be required?

Before flowing 1000 gpm, the Master Intake must reach which psi before boosting may be required?

• A. 10 psi
• B. 20 psi
• C. 30 psi
• D. 40 psi

Answer: (B)

A minimum suction pressure is needed to keep the pump primed and able to develop high discharge flow. When the Master Intake reaches about 20 psi, there’s enough pressure at the pump intake to overcome friction losses in the suction line and sustain priming, so the pump can reliably deliver up to 1000 gpm without losing prime. If the intake pressure is lower, the pump may struggle to prime or maintain flow, and boosting may be required to raise the suction pressure to allow the pump to perform at that rate. Ten psi is typically not enough to guarantee reliable priming, while values like 30 or 40 psi indicate a stronger source than the minimum needed and would usually not require boosting.

A minimum suction pressure is needed to keep the pump primed and able to develop high discharge flow. When the Master Intake reaches about 20 psi, there’s enough pressure at the pump intake to overcome friction losses in the suction line and sustain priming, so the pump can reliably deliver up to 1000 gpm without losing prime. If the intake pressure is lower, the pump may struggle to prime or maintain flow, and boosting may be required to raise the suction pressure to allow the pump to perform at that rate.

Ten psi is typically not enough to guarantee reliable priming, while values like 30 or 40 psi indicate a stronger source than the minimum needed and would usually not require boosting.