Hydraulic unit for an anti-slip brake system

Hydraulic unit for brake systems, comprising:

• an accommodating member accommodating inlet and outlet valves in several valve accommodating bores of a first and second valve row, said valves opening into a first housing surface of the accommodating member that is disposed at right angles between a second and third housing surface,
• a pump accommodating bore arranged in the accommodating member and pointing transversely to the direction the valve accommodating bores open into the accommodating member,
• a motor accommodating bore arranged in the accommodating member for driving a pump inserted into the pump accommodating bore, to what end the motor accommodating bore is aligned transversely to the pump accommodating bore,
• at least one accumulator accommodating bore opening into the accommodating member into the second housing surface,
• several pressure fluid channels that connect the valve-, pump- and accumulator accommodating bores and are adapted to provide a hydraulic connection between a pressure fluid generator and at least one pressure fluid receiver,
• including a ventilation system that permits ventilating and venting the pump- and accumulator accommodating bore for pressure compensation exclusively by way of one single ventilation point that is in connection to a pressure compensating channel of the ventilation system, the ventilation point including an element that is permeable to gas, yet impermeable to fluid, wherein the pressure-compensating channel extends transversely to the motor- and pump accommodating bores from the second housing surface through the motor accommodating bore in the direction of the third housing surface in the accommodating member positioned diametrically to the second housing surface.