Featuring 1 / 2 " external threads for secure plumbing connection, the heavy duty brass construction resists erosion and wear, while compatibility with 1222 cartridges maintains balanced pressure across hot / cold water inputs Built to meet rigorous plumbing standards, its erosion resistant brass build and standardized threading secure long term reliability in residential water distribution networks Ideal for bathroom renovations, this valves seamlessly integrates into shower systems or bathtub installations, offering top outlet showerhead and bottom outlet tub spout connection Designed for homeowners, professional plumbers, or enthusiasts upgrading single handle bathtub / shower rough in valves requiring Posi Temp compatibility and stable flows management Engineered with a brass valves body and versatile 4 port configuration, this brass valves ensures strong in high pressure systems while integrating a pressure balancing cartridge for consistent water temperature control, Manufacturer: Greabuy