EN 558-1 is a European standard that specifically specifies the face-to-face (FTF) and center-to-face (CTF) dimensions of metal valves in flanged piping systems, and is mainly applicable to valves ...
Sealing is to prevent leakage, and the principle of valve sealing is also studied from leakage prevention. There are many factors that affect the sealing performance of butterfly valves, mainly inc...
Overview
The control valve is a control component in the fluid conveying system, which has the functions of cut-off, regulation, diversion, prevention of backflow, voltage stabilization, diversion ...
Double flange butterfly valve, as a key element in the industrial field, plays an important role in various fluid systems. Its simple structure, light weight, fast opening, fast closing, good seali...
1. Defect characteristics
Unfused refers to the phenomenon that the weld metal is not completely melted and bonded with the base metal or between the layers of the weld metal.
Failure to penetrate ...
1. Before installation, it is necessary to carefully check whether the logo and certificate of the butterfly valve meet the requirements of use, and should be cleaned after verification.
2. The but...
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