The SCHOUTEN spider injector is very useful for use in the drag hose system. For pulling a trailing hose a hydraulic lift is built between the tractor and the machine. The hose is connected to a 180º hydraulically turnable and telescopic extendable drag hose coupling connected to the lift. There is also an under pressure rotateable Storz coupling mounted to which the drag hose is attached. Because of the horizontal and vertical turning coupling, twisting of the trailing hose is decreased noticeably. The hydraulic system can be either Load-Sensing or Open-Center controlled