Dural venous sinuses are located between the meningeal and periosteal layer of intracranial dura mater. The blood flow in those vein structures has been extensively described in literature. Venous blood flows through venous sinuses, starting from the superior sagittal sinus and exiting through the left and right sigmoid sinus. It was noticed in literature that the change in body position leads to change in blood pressure in dural venous sinuses. Thus, in order to explore that phenomenon we developed and constructed an original model of venous dural sinuses, which imitates anatomical and biophysical characteristics of dural sinuses acquired through magnetic venograpy in patients. A new hypothesis was proposed, according to which the blood pressure within dural venous sinuses has the same fate as a fluid within a rigid pipe that is plugged on one end and opened at the other, such as in our model, what is in accordance with the law of fluid mechanics. Our results suggest the occurrence of subatmospheric pressure values in upright body position, with the pressure values proportionate to the hydrostatic distance of the measuring position from the opening end of the model. Our research suggests that the pressures of cerebrospinal fluid and venous blood depend on anatomical and biophysical characteristic of intracranial intradural space what is in accordance with the law of fluid mechanics, and do not depend on movement of those fluids.