It is generally believed that pneumatic ball valves are most suitable for direct opening and closing, but recent development has designed pneumatic ball valves to be used for throttling and flow control. The main characteristics of pneumatic ball valve are its compact structure, easy operation and maintenance, and suitable for general working media such as water, solvent, acid and natural gas, and also suitable for media with poor working conditions, such as oxygen, hydrogen peroxide, methane and ethylene. The valve body of the pneumatic ball valve can be integral or combined.

What are the methods to identify the quality of metal soft joints
What are the methods to identify the quality of metal soft joints? We often encounter many problems when purchasing stainless steel hoses
1. The price varies from top to bottom. When the customer wants to buy stainless steel hose, he always wants to ask more companies to compare the price. But after asking, he has a headache. The prices of the three companies are too high and too low. I don't know why the gap is so big? First of all, the basic parameters and materials of the product should be unified. Whether the corrugated pipe (several layers) and net sleeve (several layers) can be made of 304 stainless steel, and what the joint of the connection mode is made of, and what the specifications are. After the specifications and materials are confirmed, the unified quotation will be better. Price is only a part of the user's choice. 2. The place of origin is endless. Many self proclaimed manufacturers have many places of origin. The user does not know which one to choose. Think about the after-sales problem and suggest the user to choose a central purchase closer to himself. 3. How to ensure after-sales service is really a key factor depending on the strength of the manufacturer. Good companies have special after-sales personnel, which can only be judged by the user himself. 4 Is it necessary to carry out practical investigation? It is necessary to stop the field investigation when ordering in large quantities, so as to facilitate long-term cooperation in the future.