Two-way coil valve authority from design pressure drops

Oct 12, 2026 · America/New_York

hydronicsPE

A two-way chilled-water coil valve is selected for a 4 psi drop at design flow. The coil plus branch piping drop is 12 psi at that flow, excluding the valve. What is the valve authority?

Practice only — not PE exam credit, not an NCEES item, not a PE stamp, and not a substitute for licensed professional judgment or licensure. Original workbench questions for discussion. Verify against current codes and your own calculations. Terms