https://www.wfrfire.com/friction-loss-calculator

Drafting Setup Checklist

• Hard sleeve fully submerged

• All connections airtight

• Pump in draft mode

• Tank fill closed

• Discharge partially open

• Increase throttle slowly

• Confirm prime within 30 sec

Troubleshooting Tree

No prime?

• Check intake cap tight

• Check gasket missing

• Check primer working

• Check air leaks

• Check strainer clogged

Losing prime?

• Air leak

• Water source too shallow

• Vortex forming

• Hard sleeve not tight