亚洲精品成人AV_国产区一二三中文区_亚洲午夜精品一区二区三区_国产特级毛片AAAAAAA高清_日本国产高清不卡爽日本国产_国产一区二区三区精_夜夜草视频电影_91天堂nba永久免费入口vip_网站下载91mba羞羞在线_中文字幕曰产区乱码无广告

展開
Features
1. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance.
2. Wear proof, corrosion resistance, long service life.
3. The opening pressure is small, and the spool can be fully opened under a small pressure difference.
4. The material of the parts can be reasonably selected according to the actual process conditions or user requirements to meet various engineering needs.
Application: Suitable for oil, chemical, pharmaceutical, chemical fertilizer, power industry and other working conditions on the pipeline, to prevent the backflow of the medium.
選型速查表
Information Request
* Please fill in your email address truthfully, and the product information will be sent to your mailbox