The flash 3-way integrated shower diverter rough-in valve, with a pressure balance valve cartridge, is an innovative design developed by American standards to make installation easier and showering more enjoyable. Featuring a flat back for flush mounting on the cross brace, and a compact body to accommodate tight spaces, the flash-integrated diverter rough-in valve delivers unmatched convenience and versatility. The pressure balance valve cartridge is equipped with a ceramic disc valve and ceramic pressure balancing spool to ensure drip-free performance, reduced risk of scalding, and resistance to harsh water conditions for exceptional durability and lasting performance.