How to set the output power of Smith water purifier

Turn the water outlet valve. Founded in 1874, A.O. Smith is one of the manufacturers of domestic and commercial hot water equipment, water purification and boilers in North America. I want to decide. The company's Smith water purifier, users only need to twist the outlet valve to adjust the outlet water. Products span two major fields: household products include AI-LiNK professional cold, warm and feng shui integration system, water heater, central domestic hot water, heating stove, water purifier, cooker, central air conditioner, central domestic water purifier and air purifier, and commercial products include water heater, hot water boiler and water purifier.