A gas purge valve (20) comprising a housing (22) configured with float chamber (40) extending between a fluid inlet port (36) and a fluid outlet port (38), the float chamber accommodating a float-activated valve assembly (50) axially displaceable within the float chamber. The valve assembly comprising at least a kinetic sealing component (54) being axially displaceable within the housing between at least a closed position sealingly engaging a sealing seat (48) of the fluid outlet port, and an open position in which it is disengaged from the sealing seat. The fluid inlet port is in flow communication with the float chamber through a fluid inlet path configured with a fluid flow regulator (100) configured with a fluid discharge flow path (102). The arrangement is such that the minimal diameter of the fluid discharge flow path is greater than the diameter of at least a lower portion of the valve assembly.