Taimi manufactures a special swivel for land based drilling rig top drive. Specially designed for its customer, this unit houses two swivels, one inside another. Having the size 12 hose inside the size 32 hose allows for one single line to be run up the mast and the size 12 pressure hose is protected from damage. It relieves torsion and facilitates installation and dismantling of the drill rig.
Taimi manufactures a Swiwell Manifold TM to remove torsion from hydraulic hoses when a drill rig lowers down its stabilizing legs.