1.light,single ,long use life. 2.excellent quality and low price. 3. Resilient seats can be easily replaced With GS,CE certificate Non-toxic,environmental-friendly material Customized design offered High quality,reasonable priceOur production process are made under ISO9001,CE ,API strictlywe can produce many kinds OF Knife Gate ValveNote: Lug Slurry tetrastyle knife gate valve as for the ...