Issues with valve declaration
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Is there a problem with the designation Z41H-TP316? The letter H indicates stainless steel of the 13Cr series, but TP316 does not belong to that series. How should this be handled?
As the saying goes, a good horse needs a good saddle; for material 316, you need a cemented carbide sealing surface. Only carbon steel is suitable for H material.
Could you explain it in more detail? I’m an amateur
There’s a problem with the code used here; it doesn’t indicate the pressure rating of the valve, so the valve manufacturer can’t produce it. The valve body of 316 uses a 13Cr sealing surface, and TP generally refers to pipes
It is recommended that valve labeling be carried out in accordance with JB/T308. If this standard is not followed, create the labeling yourself; it is best to do so based on the technical descriptions or valve specifications, otherwise others will not be able to understand it
Code Y refers to him; generally, for valves made of stainless steel, the sealing surface is either machined directly on the valve body or fitted with a Y component