How do you calculate sprinkler flow from K-factor?
Use the standard discharge equation Q = K × √P, where Q is GPM, K is the sprinkler orifice coefficient, and P is pressure at the sprinkler in psi. For example, K = 5.6 at 7 psi yields about 14.8 GPM. The calculator performs that same equation directly.
Answers
- Can I use pump pressure instead of sprinkler pressure?
- Is single-head flow enough to size a system?
- How much flow does a K-5.6 sprinkler need at 7 psi?
- Can I back-calculate pressure from required sprinkler GPM?
- Does this include hose allowance or remote area calculations?
- What happens if pressure doubles at the sprinkler?