Static vs Dynamic Pressure

Static pressure is what you measure with no flow. Dynamic pressure is what heads actually see when valves open. Regulators must be sized for worst-case simultaneous flow, not just static readings.

Field Regulators for Irrigation

Inline or valve-box regulators protect sprays from over-pressure that causes fogging and rapid soil compaction. Install after the backflow device where local codes allow, and always leave a gauge port for troubleshooting.

Household PRVs and Outdoor Loads

A whole-home PRV can starve irrigation if interior fixtures run at the same time. For large turf zones, consider a dedicated irrigation feed with its own regulator sized to peak GPM.

When to Call an Expert

Pump systems, multi-story homes, and commercial sites need a written pressure budget. Document design pressure on the controller door for the next technician.

Frequently Asked Questions

Is 80 psi too high for sprays?

Often yes—many pop-ups perform best below 45–50 psi at the head.

Can I stack regulators?

Generally avoid stacking; pick one properly rated unit and verify with a gauge.