NPSHgraph app icon
One-time iPhone and iPad app

NPSHgraph

Pump curves, system curves, and NPSH margin

Purpose-Built

An on-device pump-system workbench for plotting duty points, testing operating changes, and screening available versus required net positive suction head.

Core Tools

  • Pump and system curve intersection
  • NPSH margin and sensitivity checks
  • Forty bundled pump-reference plates

Private by Design

No account, ads, tracking, third-party analytics, or developer-operated backend. Your work stays on your device unless you deliberately share or export it.

NPSHgraph app interface

Use It Responsibly

Results are engineering planning aids. Confirm manufacturer curves, fluid properties, site elevation, piping conditions, and required safety margins.