Hydraulically Operated Excavator Rotary Coupling has flow rate ranging from 80 LMP to 150 LPM. The Coupling allows oil, water, gases and electronics to pass through it while allowing a 360 ° continuous rotation. The Coupling can operate at pressures as high as 400 kg/ cm2. The Hydraulically Operated Excavator Rotary Coupling is offered in sizes containing up to 13 ports.