What to do if a valve body made of cast iron is leaking?
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What to do if a valve body made of cast iron is leaking? Is welding or glue better? If welding is used, what type of welding rod should be used, or what adhesive?
What is the size of the cast iron valve? To what extent is it leaking? What is the pressure of the valve? What medium? The technical requirements for welding cast iron are quite high ； First, a deeper groove needs to be created, and the entire valve body must be preheated; otherwise cracks may appear at the edges of the weld. If all these techniques can be mastered, welding is entirely feasible. The adhesive should be selected based on the operating conditions of the valve body, such as pressure and the medium used.
Welding cast iron is simple as long as the right welding rod is chosen; there are cold welding and hot welding methods. The most reliable option is to use pure nickel welding rods, while lower-quality options such as low-carbon austenitic welding rods can also be used