Riobel R45-SPEX Therm Pressure Balance Rough-in Valve Pex

Product Description

The RIOBEL R45-SPEX is a thermostatic pressure balance rough-in valve designed for multi-function shower and bath systems. It accepts PEX connections at 1/2 inch and supports up to five output functions, making it a practical choice for custom shower configurations requiring independent volume control across multiple outlets. The unfinished rough-in body is installed during the rough plumbing phase, with the trim kit selected separately to match the finished wall design. Licensed plumbers and experienced trim-out technicians are the typical installers for this type of valve body.

This valve is suited for residential and light commercial wet-wall applications where a single thermostatic pressure balance valve needs to feed multiple shower components such as body sprays, hand showers, rain heads, or tub spouts. The coaxial 3-way design integrates thermostatic and pressure balance functions in one valve body, reducing rough-in complexity. PEX connection compatibility makes it well suited for new construction and remodel projects where PEX supply lines are already in place.

Key Features

• Thermostatic pressure balance design maintains consistent water temperature and pressure during use
• Supports up to 5 output functions for multi-component shower systems
• 1/2 inch PEX connections for compatibility with PEX supply plumbing
• Coaxial 3-way valve body integrates thermostatic and pressure balance controls
• Unfinished rough-in body allows separate trim selection for design flexibility

Compatibility

Designed as an OEM-style rough-in valve for use with compatible RIOBEL trim kits and multi-function shower systems requiring a thermostatic pressure balance valve with PEX connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and the IPC. Shut off the water supply completely before beginning rough-in work. The valve body must be secured and supported within the wall cavity before closing the wall surface. Do not energize any associated electronic components or pressure-test the system until all connections are fully made and inspected.

Technical Specifications

• Connection Type: PEX
• Connection Size: 1/2 inch
• Valve Type: Thermostatic Pressure Balance
• Number of Functions: Up to 5
• Finish: Unfinished Rough-In

Standard Information

• Brand: RIOBEL
• Manufacturer Part Number: R45-SPEX