Rough In Valve

Pair the Diverter with a Compatible Mixing Valve
Diverter valves do not regulate water temperature or pressure; they only control where water flows. For safety and code compliance, diverters must be paired with a pressure-balance or thermostatic mixing valve that provides anti-scald protection.

Plumbing Layout and Configuration
Each diverter outlet must be piped directly to the intended fixture. If a diverter port is not used, it must be properly capped.
For tub spouts, we recommend using a ½″ copper drop to prevent backpressure, which can cause water to unintentionally divert to the showerhead. Proper planning ensures full flow when required and reliable operation of the diverter over time.

In-Wall vs. External Diverters
Diverters are available in both in-wall (concealed) and external (exposed) formats.
In-wall diverters are typically rough-in valves installed behind the tile and require compatible trim kits.
External diverters may be integrated into components such as handheld showers or mounted externally on the shower riser.

Support and Mounting
In-wall diverters must be securely mounted between framing studs and aligned precisely to ensure the trim sits flush. In large-scale projects with repeated layouts, using templates can improve consistency and reduce installation time across units.

Flow Capacity and Pipe Sizing
For systems with multiple or simultaneous outputs (e.g., six-way diverters), it’s important to evaluate the total flow demand. For standard two-output setups, ½″ supply is often sufficient.
When using a six-outlet diverter, ensure supply lines and valves can support simultaneous outlets without a noticeable drop in pressure. This may require use of ¾″ lines or higher-flow rough-ins.

Leak Testing Before Finishing
Before sealing up the wall, test every diverter setting to ensure:
Full water flow to the selected outlet:  No crossover between outlets (e.g., tub spout dripping when shower is on)
Smooth handle operation through all positions: Catching these issues early helps avoid expensive rework later.