QCN0202 is CENO new Hydraulic Rotary Union with 2 channels for liquid. Hydraulic rotary union is often called fluid product swivel too. The pneumatic / hydraulic rotary union is a rotary joint specially used to transmit two types of media, gas and liquid, including compressed air, hydrogen, water, nitrogen oil, coolant and so on. Rotary joints adopt different sealing forms for different applications. The application of the rotary unions reach to kinds of processing and manufacture industry. Such as the metallurgy, machine tools, power generation, petroleum and feed processing etc.