Green Guru LLC Irrigation & Landscape Lighting

Pressure Discipline Diagnostics

Pressure Reducing Valve (PRV)

High pressure creates predictable failure patterns. A PRV helps protect valves, heads, fittings, and seals by stabilizing operating pressure.

This guide turns pressure complaints into measurable correction steps so upgrades are scoped from field data.

85+ PSI triage Under-flow pressure checks Regulated setpoint planning Repeat-failure reduction

Quick Answer: Do repeat leaks usually need pressure control?

Often yes. If pressure is consistently high, regulation is usually required before recurring repairs will hold.

Repeated Spot Repairs vs. PRV Pressure Control

No Pressure Discipline PRV-Regulated Baseline
Frequent head/valve callbacksLower stress across components
Misting and off-target sprayCleaner nozzle behavior and coverage control
Unstable runtime tuningMore predictable scheduling outcomes
Repair-only cycle continuesRoot pressure condition addressed first

When this is likely your issue

  • Multiple failures occur across unrelated zones.
  • Spray output looks foggy or blows off target.
  • Pressure is high even after basic adjustments.
  • Runoff and overspray persist despite nozzle changes.

What we check before replacement

  • Static pressure and dynamic pressure under active zones.
  • Highest-demand zone performance under regulation.
  • Setpoint behavior through startup and shutdown.
  • Interaction with rotor/spray hardware and nozzle strategy.

Deployment workflow

  • 1

    Capture pressure failure pattern

    Document symptoms and where repeat failures are concentrated.

  • 2

    Measure under-flow behavior

    Verify pressure while zones are running, not just at static rest.

  • 3

    Define PRV scope and setpoint

    Size and tune regulation to protect infrastructure while maintaining coverage.

  • 4

    Validate post-regulation performance

    Re-test key zones and confirm improved stability.

Related guides

FAQs

What pressure level usually triggers PRV recommendations?

Persistent high pressure, often around or above 80-85 PSI, commonly triggers pressure-discipline planning.

Why check pressure under flow instead of static only?

Dynamic readings show actual operating behavior and are more reliable for sizing and tuning.

Can a PRV reduce repeat sprinkler failures?

Yes. Pressure control often lowers stress that drives recurring leaks and part failures.

Does pressure control improve spray quality?

Yes. Regulated pressure usually reduces misting and off-target watering.

Should nozzle changes happen before regulation?

Usually no. Establishing a stable pressure baseline first produces cleaner tuning results.

Can one pressure setting fit every property?

No. Setpoints are tuned from field measurements, zone demand, and coverage goals.

Is PRV installation always required for SRMS control?

No. PRV is a pressure-discipline add-on when source pressure conditions require it.

Is this page a fixed equipment quote?

No. It is a service-first diagnostic and scope-planning guide.

At a glance

PRV pressure-discipline facts
IndustryIrrigation
ComponentMainline pressure reducing valve
Primary symptomRepeat failures from high pressure
Key checksDynamic pressure, zone demand, setpoint stability
Service notePRV scope is set from measured under-flow performance

Need it diagnosed?

We correct pressure at the system level first so downstream repairs and tuning actually hold.

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