Common problems before the application of chemical plant valves:
①Is there any defects, such as sand holes and cracks, in the inner and outer layers of the oil circuit board;
②Whether the high-pressure gate valve and the oil circuit board are tightly connected, whether the valve core conforms to the high-pressure gate valve, and whether the raised surface has any defects;
③ Whether the connection between the valve stem and the valve core is sensitive and reliable, whether the valve stem is bent, and whether the external thread is damaged;
④ Is the valve open dexterously?
