Valves such as globe valves, gate valves, butterfly valves, check valves and ball valves are all indispensable control components in various piping systems. Each valve is different in appearance, structure and even functional purpose. However, the globe valve and the gate valve have some similarities...
Selection of valves Valves are generally selected according to factors such as characteristics of media, operating conditions and valve requirements. The major Chinese valve manufacturer can manufacture various types of valves according to the above standards to meet the needs of refining and chemical...
A valve is an important component of refining and chemical pipeline systems and plays an important role in petroleum processing. Valves are used to connect and cut off the medium, prevent the medium from flowing backwards, adjust the medium's pressure and flow rate and distribute the medium. Selection...
The introduction of corrosion fatigue 1. The definition of corrosion fatigue Corrosion fatigue is a kind of corrosion that occurs under the combined effect of cyclic stress of equipment and the corrosive environment, involving many industrial sectors such as propeller, shaft, rudder, aircraft...
6. Valves for petrochemical equipment a. Oil refining equipment Valves for oil refining equipment are mostly pipeline valves, and they are mainly gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves and steam traps. Gate valves account for 80% of these valves, and these...
The valve is the control part in the fluid conveying system of the pipeline, and it is used for changing flow directions of channel sections and media. A valve has diverting, cutting off, throttling and other functions. From the simplest globe valve to the extremely complex various valves used in the...
The Technical Parameters of Chinese Valves for Supercritical Thermal Power Units​ Classification Names of Valves Materials (NPS) Normal Pipe Size(NPS) Pressure Rating Installation Position Type One 1. Gate valves WB36, F91, etc. ≤24" ≤4500 For water supply pipelines and stream pipelines...
Valves Specialized in Petrochemical Industry Among the valves specialized in petrochemical industry, the most typical valves are single-acting slide valves and double-acting slide valves of the catalytic cracking unit. The single-acting valve sends the catalyst with the carbon deposition after...
Petrochemical industry refers to the modern industry which produces petroleum products including gasoline, kerosene, diesel, lubricant and liquefied petroleum gas by using petroleum and natural gas as raw materials and alkene and arene through utilizing the light oil as the raw material so as to produce...
7. Service lives Normal failure of butterfly valves is leakages, and butterfly valves' leakages include external leakages and internal leakages. External leakages are mainly caused by erosion or corrosion, and internal leakages are caused by damage to sealed auxiliaries. Service lives usually refer...