House of Rohl 1/2″ Thermostatic & Pressure Balance Rough-in Valve with Up to 3 Functions Unfinished R23-SPEX

Create a premium shower experience with the House of Rohl 1/2″ Thermostatic & Pressure Balance Rough-in Valve with Up to 3 Functions, a high-performance rough-in valve engineered to simplify installation while delivering exceptional comfort, reliability, and control. Designed for luxury bathrooms and modern shower systems, this innovative valve combines thermostatic and pressure balance technologies into a single unit, eliminating the need for separate shut-off and diverter valves while providing outstanding performance for homeowners and professional installers alike.

Unlike conventional shower valves, the R23-SPEX delivers volume control, temperature memory, and multi-function capability from one compact valve body. This streamlined design reduces wall clutter, minimizes plumbing complexity, and creates the clean, sophisticated aesthetic expected in contemporary bathroom spaces. Whether you’re designing a spa-inspired ensuite or upgrading a family bathroom, this rough-in valve provides the flexibility and precision required for premium shower installations.

The integrated thermostatic technology allows users to set their preferred water temperature once and enjoy consistent comfort every time they shower. Its convenient temperature memory remembers your ideal setting, while the built-in pressure balance system helps maintain a stable water temperature by compensating for fluctuations in water pressure throughout the home. The result is a safer, more comfortable shower experience, even when other plumbing fixtures are in use.

Designed to support up to three shower functions, the valve offers exceptional versatility. Users can operate a showerhead or handshower independently, or run both simultaneously for a more immersive and customized shower experience. With a generous flow rate of 6.3 GPM (24.9 LPM) at 60 PSI, the valve delivers excellent water coverage while maintaining dependable performance for luxury shower systems.

Installation and servicing are equally convenient. The valve features a 1/2-inch NPT inlet connection, making it suitable for a wide range of residential plumbing systems. A built-in service stop allows maintenance to be performed without shutting off the water supply to the entire home, saving time during repairs or cartridge replacement. Additionally, the included test cap enables plumbers to pressure-test valve connections during installation while protecting the internal cartridge from damage.

Manufactured from solid brass, the valve offers exceptional durability, corrosion resistance, and long-term reliability. Its unfinished finish is designed to remain concealed behind the finished wall, making finish matching unnecessary while ensuring dependable performance for years to come.

The House of Rohl R23-SPEX Rough-in Valve is compatible with Perrin & Rowe®, Riobel®, and ROHL® trim kits ending in -23 for shared functionality and -44 for non-shared functionality (sold separately), giving homeowners and designers the freedom to pair it with a wide selection of premium shower trim collections.

Ideal for luxury residential renovations, custom home construction, and upscale commercial bathroom projects across Canada, the House of Rohl 1/2″ Thermostatic & Pressure Balance Rough-in Valve with Up to 3 Functions delivers superior functionality, simplified installation, and lasting performance. Backed by a limited lifetime warranty, it provides the confidence and quality expected from House of Rohl, making it an excellent foundation for sophisticated, high-performance shower systems.