本系列产品可用在清水、污水、海水等介质的排水水泵出口管道上，既能用于防止停泵时有压水流对水泵的冲击，又能防止介质的倒流，保证管线的使用安全。它具有结构新颖、体积小、重量轻、流体阻力小、密封可靠、启闭平稳、使用寿命长、关闭无噪声等特点。

  The valve is installed at the outlet of pump and suited to prevent media from flowing backwards and eliminate effectively damageable water hammer in pipelines flowing media of fresh water , polluted water , sea water. It has character as followings: modern structure ,small volume ,light weight ,low resistance ,reliable seal ,stable operation , long duration ,small volume.