Dissolved Air Flotation (DAF) is a mature water treatment technology. The system consists of components such as a pressure dissolution tank, a scum scraper, and a release device. Its working process involves introducing a large number of fine bubbles released from pressurized dissolved air water into the water to be treated. By utilizing the buoyancy of bubbles adhering to solid impurities, it achieves rapid solid-liquid separation and enhances the concentration of floating scum. The dissolved air release device is a critical component in the pressurized dissolved air flotation water treatment system, directly affecting the efficiency of water purification and energy consumption. The new-generation TV-type dissolved air release device improves the uniformity of water distribution, increases the probability of micro-bubble collision and adhesion with impurities in the water, thereby further enhancing the effectiveness of dissolved air flotation. The dissolved air release device is a key component in the pressurized dissolved air flotation water treatment system. Only when pressurized dissolved air water passes through this device and undergoes pressure reduction and energy dissipation can it generate a large number of fine bubbles in the water. It features stable performance, long service life, and low cost. Structure: TJ-type dissolved air release device: Orifice – single chamber – disc – reed – octagonal nozzle. TV-type dissolved air release device: Orifice – single chamber – upper and lower large parallel disc gaps. Features: Automatically avoids clogging, facilitates operation, reduces labor intensity, and overcomes the issues caused by other types of release devices, such as frequent clogging leading to equipment shutdown and the need for draining and cleaning. The flotation efficiency is more than doubled. The released dissolved air water has a retention time of more than 5 minutes, ensuring optimal solid-liquid separation. The released dissolved air water diffuses both downward and outward, increasing the contact area with the larger volume of dissolved air water. (1) Operates effectively at a pressure of 2 kg/cm2; (2) The average diameter of released bubbles is only 20–30 micrometers; (3) The air release rate is as high as 99% or more. Materials: TJ-type dissolved air release device is made of corrosion-resistant carbon steel. TV-type dissolved air release device is available in two materials: stainless steel and copper.