1,或材料的选择i材料，在line w或与国内或c and foreign standards, wid或通常用于石油或oleum, chemical, pharmace输出或化肥或肥、电力工业或y and other depar或或的 管道，以防止回流或ow of the medium.

2,The sealing pair s advanced and reasonable, and he sealing surface of the valve stem and seat is made of 或铁基材料loy or Stell铁基汽车bide surfacing. Good wear 耐腐蚀、耐高温、耐腐蚀、耐磨损、使用寿命长。

3,Can use a variety of pipe flange standard sealing form to meet various engineering needs and user requirements.

4.Complete variety of va或体材料。垫片可根据c根据实际工况或用户要求。可应用于各种ious pressure.temperature and medium conditions.

5,The valve disc rotates around the pin outside the seat to reduce the violent impact when closed.6, the pin and the valve disc are connected by built-in structure, there is no leakage point, the use of more reliable. Swing check valve.