SHANDONG SHENGFEI MACHINERY CO., LTD is a factory of double offset high performance butterfly valves. All our soft seat, metal seat and fire safe seat butterfly valves are bi-directional zero leakage.
This video record the process of downstream pressure test for CLASS 150 metal seat butterfly valves for asphalt processing. Test pressure is 2.2Mpa.
SHANDONG SHENGFEI MACHINERY CO., LTD
Web: www.shengfeimachinery.com
Email: sales@shengfeimachinery.com
