Swing check valve practical media: water, steam, oil, nitric acid, strong oxidizing media and urea. Used in power plants, kerosene, chemicals, pharmaceuticals, food and other industries. Can be used directly with the deployment of the entrance set equipment deployment. Swing check valve function is used to prevent pipeline backflow of media. Check valves are active valves, opening and closing pieces of the media by its own power to open or close the pneumatic. Check valve is only used for medium one-way activities on the pipeline, to prevent media back to prevent the occurrence of confusion. Zhejiang Dingtai valve production American standard check valve according to ANSIB16.34 scale plan to manufacture. Varieties are: swing check valve, landing check valve, landing vertical check valve; Class150lB ~ 900Lb; NPS1 "~ 28" things temperature -40 ~ 570 ℃; Body material: WCB, WC1, WC6 , WC9, C5, CF3, CF8, CF3M, CF8M and the like. Swing check valve practical media: water, steam, oil, nitric acid, strong oxidizing media and urea. Used in power plants, kerosene, chemicals, pharmaceuticals, food and other industries. Can be used directly with the deployment of the entrance set equipment deployment. On the folder-type check valve is used in nominal pressure PN1.0MPa ~ 42.0MPa, Class150 ~ 2500; nominal diameter DN12 ~ 1200mm, NPS1 / 2 ~ 48; things temperature -196 ~ 540 ℃ for a variety of pipeline, Media backwards. Through the choice of different materials, can be applied to water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea and other media.