该阀由阀体、阀瓣、弹簧等组成，水平或垂直安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好。

http://www.shqgfm.com
http://www.sh-qigao.com
http://www.qigaofamen.com
http://www.qigaovalve.com
http://www.qigaov.com
http://www.chinaqigao.com
http://www.shqgfm.net
http://www.qigaov.net
http://www.qgzhafa.com
http://www.qgqiufa.com
http://www.qgqdf.com
http://www.qgdzf.com
http://www.qgdiefa.com
http://www.qgjzf.com
http://www.qgzhf.com
http://www.qgssf.com
http://www.qgglq.com
http://www.qgflf.com
http://www.qggmf.com
http://www.qgslf.com
http://www.qgdcf.com
http://www.qgzhq.com
http://www.qgdwf.com
http://www.qgyqf.com
http://www.zhengyev.com
http://www.shbtbf.com