Damping spring pneumatic butterfly valve air conditioning unit pneumatic butterfly valve fan pneumatic butterfly valve supplied by the manufacturer
The damping spring pneumatic butterfly valve is worth a few dollars. Shanghai is a reliable supplier of damping spring pneumatic butterfly valves. Songxia Pneumatic Butterfly Valve Technology is a well-known damping spring pneumatic butterfly valve supplier in China. It provides damping spring pneumatic butterfly valves for individuals or enterprises from different countries and regions. It can customize and process products according to customer needs, Promote the development of rubber pneumatic butterfly valve industry.
Damping spring pneumatic butterfly valve is a reliable ZD type damping spring pneumatic butterfly valve supplier in Tianjin. With good market positioning, stable organizational structure and good service, the brother pneumatic butterfly valve technology has become a new star in the field of rubber pneumatic butterfly valves, and has grown steadily at a fast pace, reaching a new level. In order to prosper China's auto parts market and promote the development of a larger industry, we will provide convenience for a wide range of individuals or enterprises.
Songxia pneumatic butterfly valve technology has become a professional rubber pneumatic butterfly valve enterprise relying on years of strict standardized management. Focusing on technological innovation, cost control and market demand, we strive to provide individuals or enterprises with good ZD damper spring pneumatic butterfly valves. Our products are mainly marketed across the country, and we provide individuals or enterprises with demand analysis, project planning, project implementation and other processing plans based on our practical experience of many years of project implementation.

The hose is not suitable for liquid sulfur escort pipeline
The liquid sulfur is transported to the wharf by ship and pumped into the storage tank in the installation area. In order to restrain the shaking of river water and barges, pneumatic butterfly valves are selected for the liquid sulfur escort pipeline between the wharf trestle and the river bank. The pneumatic butterfly valve broke soon after being used, resulting in liquid sulfur leakage.
This is why. Analyzed the reason for the break, stopped communicating with suppliers and manufacturers, and put forward suggestions for improvement.
The design parameters are: the jacket is accompanied by the inner tube of the hose DN125, the outer tube DN200, the length is 10 m, the material is 304 stainless steel, the wall thickness is 0.8 mln, and the design pressure is 1.0 MPa. The application conditions are as follows: intermittent escort of liquid sulfur, working pressure of inner liquid sulfur is 0.6 MPa, and temperature is 135 ℃; The outer steam pressure is 0.5 MPa and the temperature is 140 ℃.
The leaking part was sampled for coloring inspection. It was found that the leaking part was on the first wave crest of the corrugated pipe where the inner hose was close to the pipe joint. The cracks were distributed in a circumferential direction, and the internal and external surface of the cracks were larger than the surface. It can be inferred that the crack extends from inside to outside.
Liquid sulfur has certain acidity. In the process of loading and unloading, liquid sulfur inevitably carries a small amount of water and oxygen, which is acidic after oxidation, so the acidity of liquid sulfur is further increased; On the other hand, the material of large caliber pneumatic butterfly valve was improperly treated in the process of consumption and processing, and the carbides could not be fully dissolved. The material itself had carbides precipitation, which greatly reduced the corrosion resistance of 304 stainless steel itself. Under acidic conditions, first of all, micro electrochemical reactions were made at these locations, showing corrosion.
The fracture is located at the junction of the soft and hard pipes on the upper side of the first wave peak. Because the hose is too long, the curvature at the fracture is too large, and the stress is concentrated. In addition, during the operation, liquid sulfur shall be transported through gaps. When not escorted, stop supplying steam, solidify the liquid sulfur in the hose to fill the hose, so that the hose becomes rigid and can not absorb the stress generated when the barge shakes and moves. Under the combined action of the above two kinds of stresses, the pneumatic butterfly valve is cracked due to stress corrosion. How does the pneumatic butterfly valve change in application