成人亚洲a片v一区二区三区小说,人人妻久久人人澡人人爽人人精品,日本熟妇色xxxxx日本免费看,秋霞av一区二区二三区

您好,歡迎訪(fǎng)問(wèn)北京航化特種閥科技有限公司

logo2
微信圖片_20241212155940
航化特種閥熱線(xiàn)

產(chǎn)品介紹

Product introduction

    波紋管單座調(diào)節(jié)閥 Bellows single seat regulating valve

      Detail

      波紋管單座調(diào)節(jié)閥采用波紋管 - 填料雙重密封結(jié)構(gòu),安全可靠性更好。

      適用于劇毒、強(qiáng)腐蝕性等稀有特殊介質(zhì)的自動(dòng)控制系統(tǒng)。

      The bellows single seat regulating valve adopts a bellows packing dual sealing structure, which is safer and more reliable. 

      An automatic control system suitable for rare and special media such as highly toxic and corrosive substances.