Gravity-Fed Irrigation from a Hand-Pumped Tank

Challenges of Low-Pressure Sprinkler Operation

A user plans to manually pump water into a tank and use gravity to pressurize a sprinkler system for a 100m x 100m area.

Pressure and Flow Requirements

Sprinklers need at least 15 PSI and adequate flow (GPM). Gravity systems require significant elevation difference (head) to achieve even minimal pressure. With a typical setup, only one sprinkler could run at a time, and large-diameter pipe would be needed to reduce friction loss.

Practicality

This approach is rarely feasible for conventional sprinklers. Drip irrigation or a small booster pump would be more realistic alternatives.