A system for preventing the pressured oil leakage in a cylinder line being connected to a hydraulic cylinder comprising: - a housing comprising the parts of a control valve having three positions, raising, lowering or neutral position, the control valve comprising a main spool defining raising, lowering or neutral position of the hydraulic cylinder, - the housing further comprising: - a flow divider spool and a flow divider dynamic pressure volume acting against one end of the flow divider spool, the flow divider spool being connected to an oil inlet duct, an excess flow line and to the control valve through a flow divider and main spool link, - a check valve, - a main spool and check valve link connecting an output port of the control valve to the check valve, characterized in that the housing further comprises: - a flow divider pilot spool preventing the system from exposing to pressure in the end of the raising process, - a check valve and flow divider pilot spool link enabling the pressured oil which runs into the main spool and check valve link during the raising process to arrive into the flow divider pilot spool, - a flow divider and main spool inlet link connecting the oil in the inlet of the main spool to an end of the flow divider pilot spool, - a flow divider pilot spool tank link opening a flow divider pilot spool and flow divider spring side link which is connected to the flow divider dynamic pressure volume to an oil tank according to the position of the flow divider pilot spool, - the main spool further comprising a linkage connecting the flow divider and main spool link through a main spool transfer line to the flow divider and main spool inlet link according to the position of the main spool, wherein the housing further comprises discharge notches for leak oil acting together with the flow divider pilot spool, the discharge notches enabling in a position of the flow divider pilot spool the oil leaking from the control valve to be discharged to the oil tank through the main spool and check valve link and the flow divider pilot spool and tank link when the excess flow line is pressurized. - a housing comprising the parts of a control valve having three positions, raising, lowering or neutral position, the control valve comprising a main spool defining raising, lowering or neutral position of the hydraulic cylinder, - the housing further comprising: - a flow divider spool and a flow divider dynamic pressure volume acting against one end of the flow divider spool, the flow divider spool being connected to an oil inlet duct, an excess flow line and to the control valve through a flow divider and main spool link, - a check valve, - a main spool and check valve link connecting an output port of the control valve to the check valve, - a flow divider spool and a flow divider dynamic pressure volume acting against one end of the flow divider spool, the flow divider spool being connected to an oil inlet duct, an excess flow line and to the control valve through a flow divider and main spool link, - a check valve, - a main spool and check valve link connecting an output port of the control valve to the check valve, - a flow divider pilot spool preventing the system from exposing to pressure in the end of the raising process, - a check valve and flow divider pilot spool link enabling the pressured oil which runs into the main spool and check valve link during the raising process to arrive into the flow divider pilot spool, - a flow divider and main spool inlet link connecting the oil in the inlet of the main spool to an end of the flow divider pilot spool, - a flow divider pilot spool tank link opening a flow divider pilot spool and flow divider spring side link which is connected to the flow divider dynamic pressure volume to an oil tank according to the position of the flow divider pilot spool, - the main spool further comprising a linkage connecting the flow divider and main spool link through a main spool transfer line to the flow divider and main spool inlet link according to the position of the main spool,