Booster pumps, sewage ejector pumps, sump pumps, and circulator pumps, pump curve basics (head vs. flow), sizing a booster pump for a pressure-deficient system, and the control strategies — variable speed and lead-lag — that keep a pump system efficient and reliable.
Pumps enter a plumbing design exactly where gravity and street pressure alone can't do the job — pushing domestic water higher than street pressure reaches, lifting wastewater or stormwater up and out of a space below its drainage connection, and keeping a hot water recirculation loop moving. This module works through the four pump types a plumbing engineer selects between, how to read a pump's head-versus-flow performance curve against a system's own curve, and how to size a booster pump for a real pressure-deficient building.
The booster pump worked example picks up directly where Module 4's pipe sizing pressure check left off — converting a calculated psi shortfall at a building's worst-case fixture into the feet of head a real pump has to add — before closing on the variable-speed and lead-lag control strategies that keep a multi-pump booster package efficient and reliable across a full day of varying demand.