Partial Zone Shutoff: Manual Valve for Rose Bed on Shared Zone

You want to water roses less often than turf on the same zone—without adding a new valve zone. The simple, reliable solution: a manual ball valve on the rose bed's supply line.

Installation

1. Locate where the rose bed lateral tees off the main zone line.
2. Cut pipe, install PVC true-union ball valve (¾" or 1", match pipe size). True-union allows future removal without cutting.
3. Extend valve stem to a valve box at grade (6" round box) for easy access.
4. Label: "ROSE BED - OPEN FOR ROSES, CLOSED FOR TURF ONLY".

Operation

• Turf-only days (2x/week): Valve CLOSED.
• Rose + turf day (1x/week): Valve OPEN.

Why Not Automatic?

Adding a second electric valve requires: new controller output, new wire run, new valve box, programming. Cost: $300–$600+. A manual ball valve: $25–$40, 30 min install. For a 2:1 schedule, manual is pragmatic.

Alternative: Pressure-Compensating Bubblers on Roses

If roses are few, replace their pop-ups with PC bubblers (0.5–1 GPM) and reduce run time for the whole zone. Less precise but no manual intervention.