A recharging mechanism for resetting a pressure in a low pressure recipient connected to a subsea pressure control device, the recharging mechanism comprising: the low pressure recipient configured to have first and second chambers, the first and second chambers being separated by a piston, the first chamber being configured to receive a hydraulic liquid at a high pressure, and the second chamber being hermetically sealed and configured to include a gas at a low pressure; a valve fluidly connected to a first port of the first chamber of the low pressure recipient; a pumping device connected by a fluid connection to a second port of the first chamber of the low pressure recipient; and a blowout preventer section fluidly connected to the valve and configured to close or open a ram block, wherein the pumping device evacuates the hydraulic fluid from the first chamber of the low pressure recipient when the valve closes a fluid communication between the first port of the first chamber and the BOP section; and wherein the pumping device further comprises: first and second enclosures connected to each other by a passage, the cross-sectional area of the first enclosure being larger than a cross-sectional area of the second enclosure; a piston provided in the first enclosure to split the first enclosure into first and second chambers; and a rod connected to the piston and configured to extend through the first enclosure, the passage and the second enclosure in such a way that a fluid from the second enclosure is prevented to enter the first enclosure, the second enclosure being fluidly connected to the first chamber of the low pressure recipient, wherein the rod is moveable inside the second enclosure to absorb the fluid from the first chamber and to discharge the absorbed fluid outside of the pumping device. the low pressure recipient configured to have first and second chambers, the first and second chambers being separated by a piston, the first chamber being configured to receive a hydraulic liquid at a high pressure, and the second chamber being hermetically sealed and configured to include a gas at a low pressure; a valve fluidly connected to a first port of the first chamber of the low pressure recipient; a pumping device connected by a fluid connection to a second port of the first chamber of the low pressure recipient; and a blowout preventer section fluidly connected to the valve and configured to close or open a ram block, wherein the pumping device evacuates the hydraulic fluid from the first chamber of the low pressure recipient when the valve closes a fluid communication between the first port of the first chamber and the BOP section; and wherein the pumping device further comprises: first and second enclosures connected to each other by a passage, the cross-sectional area of the first enclosure being larger than a cross-sectional area of the second enclosure; a piston provided in the first enclosure to split the first enclosure into first and second chambers; and a rod connected to the piston and configured to extend through the first enclosure, the passage and the second enclosure in such a way that a fluid from the second enclosure is prevented to enter the first enclosure, the second enclosure being fluidly connected to the first chamber of the low pressure recipient, wherein the rod is moveable inside the second enclosure to absorb the fluid from the first chamber and to discharge the absorbed fluid outside of the pumping device. first and second enclosures connected to each other by a passage, the cross-sectional area of the first enclosure being larger than a cross-sectional area of the second enclosure; a piston provided in the first enclosure to split the first enclosure into first and second chambers; and a rod connected to the piston and configured to extend through the first enclosure, the passage and the second enclosure in such a way that a fluid from the second enclosure is prevented to enter the first enclosure, the second enclosure being fluidly connected to the first chamber of the low pressure recipient, wherein the rod is moveable inside the second enclosure to absorb the fluid from the first chamber and to discharge the absorbed fluid outside of the pumping device.