A fuel valve for injecting gaseous fuel into the combustion chamber of a large two-stroke low-speed turbocharged self-igniting internal combustion engine, said fuel valve comprising: an elongated fuel valve housing with a rear end and a front end, a nozzle with a plurality of nozzle holes opening to a sac volume inside the nozzle, said nozzle being disposed at the front end of said elongated valve housing, said nozzle comprising a base and an elongated nozzle body, said nozzle being connected with its base to said front end of said elongated valve housing, said nozzle having a closed tip with said nozzle holes arranged close to said tip, a gaseous fuel inlet port in said elongated fuel valve housing for connection to a source of high pressure gaseous fuel, an axially displaceable valve needle slidably received in a longitudinal bore in said elongated valve housing, said axially displaceable valve needle having a closed position and an open position, said axially displaceable valve needle rests on a valve seat in said closed position and said axially displaceable valve needle has lift from said valve seat in said open position, said valve seat being placed between a fuel chamber in said elongated fuel valve housing and an outlet port in said front end of said elongated fuel valve housing below the valve seat, said fuel chamber is fluidly connected to said gaseous fuel inlet port, said sac volume in said nozzle being a longitudinal bore extending from said closed tip of said nozzle to said base of the nozzle and said sac volume opening to the rear of the nozzle so as to fluidly connect said sac volume with said outlet port, an actuator system for controllably moving said axially displaceable valve needle between said closed position and said open position, an ignition liquid inlet port (78,98) for connection to a source of high pressure ignition liquid, and an ignition liquid supply conduit (76,99) connecting said ignition liquid inlet port (78,98) to said fuel chamber, said ignition liquid supply conduit (76,99) including a fixed flow restriction, wherein said fixed flow restriction is a fixed orifice flow control element. an elongated fuel valve housing with a rear end and a front end, a nozzle with a plurality of nozzle holes opening to a sac volume inside the nozzle, said nozzle being disposed at the front end of said elongated valve housing, said nozzle comprising a base and an elongated nozzle body, said nozzle being connected with its base to said front end of said elongated valve housing, said nozzle having a closed tip with said nozzle holes arranged close to said tip, a gaseous fuel inlet port in said elongated fuel valve housing for connection to a source of high pressure gaseous fuel, an axially displaceable valve needle slidably received in a longitudinal bore in said elongated valve housing, said axially displaceable valve needle having a closed position and an open position, said axially displaceable valve needle rests on a valve seat in said closed position and said axially displaceable valve needle has lift from said valve seat in said open position, said valve seat being placed between a fuel chamber in said elongated fuel valve housing and an outlet port in said front end of said elongated fuel valve housing below the valve seat, said fuel chamber is fluidly connected to said gaseous fuel inlet port, said sac volume in said nozzle being a longitudinal bore extending from said closed tip of said nozzle to said base of the nozzle and said sac volume opening to the rear of the nozzle so as to fluidly connect said sac volume with said outlet port, an actuator system for controllably moving said axially displaceable valve needle between said closed position and said open position, an ignition liquid inlet port (78,98) for connection to a source of high pressure ignition liquid, and an ignition liquid supply conduit (76,99) connecting said ignition liquid inlet port (78,98) to said fuel chamber, said ignition liquid supply conduit (76,99) including a fixed flow restriction, wherein said fixed flow restriction is a fixed orifice flow control element.