Multi circuit protection valve assembly for a pressurized fluid system of a commercial vehicle, said multi circuit protection valve assembly comprising a fluid inlet, a first brake circuit outlet, a second brake circuit outlet, an additional supply circuit outlet, an overflow valve subassembly with two overflow valves (121, 122) and a bypass valve arrangement (14, 15) for bypassing said overflow valves (121, 122), wherein said multi circuit protection valve assembly comprises: - a port body comprising at least said first and second brake circuit outlets (21, 22) and internal base channels, - a first valve body being provided on top of said port body in a stack direction (v) and comprising first internal fluid channels, - a second valve body being provided on top of said first valve body in said stack direction (v) and comprising second internal fluid channels, - a first gasket provided between said port body and said first valve body, for sealing air passages between said internal base channels and said first internal channels and defining first gasket compartments (33a, 33b, 33c, 33d) - a second gasket provided between said first valve body and said second valve body, for sealing air passages between said first internal fluid channels and said second internal fluid channels and defining second gasket compartments (35a, 35b, 35c), wherein said bypass valve arrangement (14, 15) and/or said overflow valve subassembly (121, 122) are at least partially received in said first gasket compartments (33a, 33b, 33c, 33d) or said second gasket compartments(35a, 35b, 35c), wherein said port body and said valve bodies (34, 36) are forming a stack in said stack direction (v), which stack is secured by at least one holding means. wherein said multi circuit protection valve assembly comprises: - a port body comprising at least said first and second brake circuit outlets (21, 22) and internal base channels, - a first valve body being provided on top of said port body in a stack direction (v) and comprising first internal fluid channels, - a second valve body being provided on top of said first valve body in said stack direction (v) and comprising second internal fluid channels, - a first gasket provided between said port body and said first valve body, for sealing air passages between said internal base channels and said first internal channels and defining first gasket compartments (33a, 33b, 33c, 33d) - a second gasket provided between said first valve body and said second valve body, for sealing air passages between said first internal fluid channels and said second internal fluid channels and defining second gasket compartments (35a, 35b, 35c), - a port body comprising at least said first and second brake circuit outlets (21, 22) and internal base channels, - a first valve body being provided on top of said port body in a stack direction (v) and comprising first internal fluid channels, - a second valve body being provided on top of said first valve body in said stack direction (v) and comprising second internal fluid channels, - a first gasket provided between said port body and said first valve body, for sealing air passages between said internal base channels and said first internal channels and defining first gasket compartments (33a, 33b, 33c, 33d) - a second gasket provided between said first valve body and said second valve body, for sealing air passages between said first internal fluid channels and said second internal fluid channels and defining second gasket compartments (35a, 35b, 35c), wherein said bypass valve arrangement (14, 15) and/or said overflow valve subassembly (121, 122) are at least partially received in said first gasket compartments (33a, 33b, 33c, 33d) or said second gasket compartments(35a, 35b, 35c), wherein said port body and said valve bodies (34, 36) are forming a stack in said stack direction (v), which stack is secured by at least one holding means.