旋转接头将流体从固定供应源转移到旋转机械中,例如由油加热或用水冷却的旋转滚筒。使用不同的类型来匹配每组需求。Rotating unions, also called rotary unions or rotary joints, transfer fluid from a stationary supply into rotating machinery, such as a spinning drum heated by oil or chilled by water. Different types are used to match each set of requirements.