What is the specified flow rate and pressure for pumping by water tenders?

What is the specified flow rate and pressure for pumping by water tenders?

• A. 250 gpm at 150 psi
• B. 200 gpm at 150 psi
• C. 250 gpm at 100 psi
• D. 300 gpm at 150 psi

Answer: (A)

The flow rate and pressure specified for pumping by water tenders is 250 gpm at 150 psi. This combination provides enough water volume to support common attack lines while delivering enough pressure to overcome friction losses and elevation differences along typical hose runs. It strikes a practical balance: not so high a pressure that it strains the tender’s pump and hoses, and not so low a flow that you can’t sustain water to multiple lines or a larger discharge. Why the other options don’t fit: lowering the flow to 200 gpm reduces available water for lines, making it harder to sustain larger or multiple lines. Lowering pressure to 100 psi undermines the ability to push water through hose lengths and fittings effectively. Increasing flow to 300 gpm at the same 150 psi exceeds typical tender capabilities and isn’t the standard spec used in training.

The flow rate and pressure specified for pumping by water tenders is 250 gpm at 150 psi. This combination provides enough water volume to support common attack lines while delivering enough pressure to overcome friction losses and elevation differences along typical hose runs. It strikes a practical balance: not so high a pressure that it strains the tender’s pump and hoses, and not so low a flow that you can’t sustain water to multiple lines or a larger discharge.

Why the other options don’t fit: lowering the flow to 200 gpm reduces available water for lines, making it harder to sustain larger or multiple lines. Lowering pressure to 100 psi undermines the ability to push water through hose lengths and fittings effectively. Increasing flow to 300 gpm at the same 150 psi exceeds typical tender capabilities and isn’t the standard spec used in training.