With the clean lines and dramatic geometric forms, SUMERAIN matte black pressure balance shower only faucet brings a refreshed modern look to your home with simple lines and contemporary style. Classical and standard American rain shower system with the thickened solid brass cast valve and anti-scalding pressure balance cartridge, especially designed for American users! Rough-in valve with pressure regulating valves in its cold and hot water inlets, avoids the big pressure difference between cold and hot water, so the mixing water can be continuous supplied. Rain shower head with silicone nozzles allows you to wipe away mineral deposits with the swipe of a finger. Single lever handle for ease of temperature and flow control. This shower faucet set listed in the California CEC modernized appliance efficiency database system, and the ECPA Department of Energy (DOE) qualified list. Rain shower head has WaterSense certification and compliant with standard: EPA WaterSense specification for showerheads(version 1.1,July 26,2018). Rough in valve,Rain shower head, shower arm has ICC-ES PMG certification, compliant with standard: ASME A112.18.1/CSA B125.1-2018, plumbing supply fittings(the same standard as cUPC). Model: S3221DI-B-TAProduct Name: Pressure Balance Shower FaucetMaterial: Brass, 304 Stainless SteellFinish: Matte Black Features: Anti-scalding pressure balance cartridgePressure regulating valvesWith non-return check valves SUMERAIN is a established name in the US plumbing industry which puts great emphasis on stylish and durable. Perfection does not always have to be expensive. SUMERAIN masterful products are high quality and inexpensive. Over three decades of manufacturing experience has provided us with the extensive market knowledge and the ability to offer new products at reasonable expense. The key to our success is intelligentization- we have rapidly expanded into exciting new products groups to be at the forefront of the market. We are dedicated to bringing you the latest designs utilising the most up-to-date technology. The new product design team benefit from a development system audited to ISO9001 standards, meaning each product is designed, sourced, evaluated and warehoused in a high standard. About this item specificities 1.Shower faucet with 8 inches rain shower head, rough-in valve with standard American NPT 1/2" male threads for firmly connection and good sealing, avoids any leakage and prevents flooding in your house. Rest assured with our Massachusetts-certified product, meeting stringent state requirements for safety and reliability. 2.Cold and hot water inlets with non-return check valves, prevent backflow and water hammer, reduce the noise when you turn on the faucet. It can protect your other facilities in the waterways.3.Classical and standard American pressure balance shower faucet with the thickened solid brass cast valve and anti-scalding pressure balance cartridge, black shower fixtures especially designed for American users.4.Black shower faucet with pressure regulating valves in its cold and hot water inlets, avoids the big pressure difference between cold and hot water, so the mixing water can be continuous supplied.5.Brass construction of faucet body and handle ensures reliability. Single lever handle for ease temperature and flow control.