You can rest assured that your contractor or plumber won't reject this shower system set.  The Line Shower Faucet Sets are ensure a safe water temperature in the shower and avoid unnecessary harm to the human body caused by running hot and cold water. Please identify certified shower systems that protect the rights and safety of consumers and prevent substandard products from entering the market. 

• This shower system features all-metal sturdy construction. The mixing valve is made of solid brass with rust-free, long-life characteristics, while the 304 Stainless Steel Rain Shower Head with silicone nozzles allows you to wipe away mineral deposits with the swipe of a finger.  Flow Rate is 1.75 Gallons Per Minute (6.6L/min).
• The pressure balance valve has built-in two check valves to effectively eliminate water hammer noise. The pressure balance valve's cartridge monitors water pressure balance, helping to protect you from being scalded by sudden changes in hot or cold water pressure. 
• Ultimate High Pressure Shower: Thanks to the ultra-thin design of the rain shower, even in low water pressure environments, the water can achieve a high pressure rain shower experience when it flows out of the ultra-small space.