Pneumatic-liquid Rotary Union with 2 isolated medium channels QCN0203-A is CENO Pneumatic-liquid Rotary Union with 2 isolated medium channels. It supports infinite 360° continuous rotation without pipeline tangling, separately transmitting compressed air, vacuum or cooling liquid without cross-leakage. Equipped with stainless steel flange for compact mounting, it has wear-resistant sealing structure, CE and RoHS certifications for industrial liquid and gas delivery systems.