PlumbShop water stops are quarter-turn ball stops available in both angle and straight with a wide variety of configurations, including cold expansion. The PlumbShop line of water stops is a reliable and dependable value, BrassCraft states. The stops are forged from brass and chrome-plated for corrosion resistance and are compatible with copper, PEX and CPVC. All PlumbShop products undergo quality-assurance testing and meet all industry certification standards. PlumbShop is backed by Brasscraft Mfg. Co.