Home
EN 12845 §10 / NFPA 20

Pump head — static + friction + residual

Total pump head from static lift, pipe friction and required residual pressure at the most demanding sprinkler.

Total head H = H_static + H_friction + H_residual. All values entered in metres of water (10.2 m ≈ 1 bar).

Result
Total pump head
40 m
Equivalent pressure
3.92 bar
Equivalent pressure
56.86 psi

Formula: H_total = H_static + H_friction + H_residual

Reference: EN 12845 §10 / NFPA 20

Embed this calculator

Paste into any blog post or documentation page. Free, no signup, links back to FireTwin AI.

<iframe src="https://www.firetwin.eu/embed/calc/pump-head" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:8px" loading="lazy" title="Pump head — static + friction + residual — FireTwin AI"></iframe>

← Alle Rechner

Design it in FireTwin AI

Generate a compliant sprinkler layout, run the hydraulic calculation and export a priced bill of materials — checked against EN 12845 and NFPA 13.

Related