Designed for fast and efficient installation, the Flash Shower Rough-in Valve provides flexibility for every situation. It features a flat back and compact body to ensure a secure and simplified install process that can accommodate smaller spaces. Equipped with a test cap, it allows you to install, test, and flush lines with ease. Stainless steel fixation ring, with sure-grip flats, keeps test cap and cartridge in place without screws.

So glad Wayfair had this valve available to fit my shower trim kit. Plus it came sooner than expected.. Andrea. Ukiah, CA. Mon May 05 2025

M-Core is shower design on your time. This valve system is simpler and faster to install, and offers additional functionality with desired style choices to create an ideal shower environment. Moen has conducted extensive research to create M-Core, and what drives the design is a passion to make the workday more streamlined for plumbers, and to give more freedom in showering functionality and design for both new construction and remodel projects. Homeowners and designers will enjoy M-Core's improved style and finish options, including perfectly matching mixing and transfer trim, and refined details that provide the finishing touches to a dream bathroom. Once installed, M-Core valves, with new 3-Series trim, have pressure-balancing capabilities designed to control temperature fluctuations in the event of water pressure changes in the home. They also feature volume control, allowing you to adjust the flow of water.

Easy to install and butter smooth operation.. Phil. Sacramento. Tue Mar 03 2026

Right Part Best Price Fast Service What More Can You Ask ? Cons: None. Robert. Nashville, TN. Sat Sep 26 2015

Timeless design for today's homes.

The product fit and worked fine. Thomas. Severna Park, MD. Sun Feb 12 2012

Exactly what we needed. Hard to find part! Glad you had it!. Brad. MO. Wed Sep 04 2019

Enjoy precise water control with this rough-in valve. Designed for easy integration, it seamlessly blends into any bathroom design, bringing a touch of modern functionality. Experience a new level of showering thanks to its advanced valve technology.

Great functioning in wall piece that works well with our new Delta handle and rainfall shower head. (FYI—— you will need to purchase a cartridge to use with this. Not included). Kim. US. Sun Sep 06 2026