If there are cracks in the valve body and they are removed by grinding, how can one be sure that the resulting pits do not affect the valve’s functionality?

2026-06-08View Original

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If there are cracks in the valve body and they are removed by grinding, how can one be sure that the resulting pits do not affect the valve’s functionality?

Reply #22026-06-09

Measure the thickness; if the thickness is within acceptable limits, then consider whether cladding is possible

Reply #32026-06-09

What is used as a reference for thickness? Can it be compared with the connected pipe?

Reply #42026-06-12

1. Calculate the pit shape； 2. Calculate the strength of the remaining wall thickness.

Reply #52026-06-12

Valves are not pipe fittings, so they cannot have their safety condition grades assessed according to TSG31; it’s really annoying

Reply #62026-06-12

This post was last edited by chenjdvip on 2026-6-12 at 16:20. If the pit is not located in a high-stress area, and the thickness meets the minimum requirement after the defect is removed, then smoothing out the transition is sufficient.

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