This series of valves is suitable for working medium for water、air、saturated vapor etc.
This valve is suitable on the nitric acid type pipelie does prevents the medium adverse cu
This series of valves is suitable for working medium for water、noncorrosive liquid、a
This series of valves is suitable for working medium for water、non-corrosive liquid、air、sa
This valve is suitable the pipeline of water,vapor,oil etc,non-corrosive medium,for openin