RIOBEL R51-EX PEX Pressure Balance Rough-In Valve Unfinished Brass

$32.79

Looking for a dependable Type P pressure balance expansion PEX solution for your rough-in plumbing projects? This system is engineered to keep your water supply steady and safe by balancing pressure fluctuations—critical for preventing water hammer or scalding risks when other fixtures are in use.

Designed specifically for rough-in applications (no cartridge needed), this expansion PEX includes essential components to streamline installation: service valves for easy maintenance access; a ½” inlet to connect with your main water supply; versatile outlets like shower fixtures (½” compatible with handhelds or stand-mounted units) and bath options (¾” for larger tubs or ½” sweat-fit for smaller setups). All components are rated for rough-only use, making it ideal for new installations where fixtures aren’t yet in place.

Compatibility is key—this system works seamlessly with standard home plumbing. To ensure leak-free connections and proper fit with common shower heads, faucets, and tub fillers, you’ll need one of our trim kits: XX51XX (for most shower fixtures), XX61XX (for additional shower configurations), or TXX51XX (for tub fillers).

We’ve simplified the process with everything you need included: manufacturer-supplied links to quick-reference installation guides, a detailed specification sheet for technical specs, and a step-by-step manual to walk you through setup without guesswork.

Choose this Type P pressure balance expansion PEX rough-in kit for a secure plumbing foundation that balances water pressure reliably—protecting your system and your home.

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Unfinished

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