A resiliently mounted valve body has a sealing face and, by way of spring arms, is resiliently-elastically connected to a holding ring which encompasses the valve body in at least one position, so that the valve body is repositionable in a parallel manner in the axial direction. The holding ring is in one piece with and materially integral to a latching body for fastening a check valve element in a latching manner in a fluid-conducting installation of a check valve assembly. The latching body extends in the axial direction, facing away from the valve body, and has at least one latching protrusion which is resiliently-elastically repositionable in the radial direction.