阀芯 Traditional form: 閥芯 Pinyin (reading): fáxīn Definitions: valve stem Characters: 阀 - clique, valve; a powerful and influential group 芯 - core, pith; the pith of a rush (Juncus effusus) Traditional characters: 閥 - clique, valve; a powerful and influential group 芯 - core, pith; the pith of a rush (Juncus effusus)