Your first network

Open FSAP and choose File → New deck to get a blank schematic canvas. You'll build a four-node loop: an inlet, a pump, a valve, and an outlet.

Place nodes

Drag two boundary nodes onto the canvas. Set the inlet to 50 psia and the outlet to 14.7 psia in the inspector. Add two internal nodes between them.

Connect branches

Draw a branch between nodes, then assign a component from the palette — a pump, a valve, and a length of pipe.

Inspect properties

Select any element to open the unit-aware inspector. Set pipe diameter, length, and roughness, and pick US or SI units per field — FSAP carries the unit through the solver, not just the number.

Next → Run a steady-state solve