Issues with valve descriptions in the pipe material table
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Gate valve 15 ~ 40A105,13Cr TRIM, PN16, RF, BB, OS&Y, HW OP.Z41H1-16C1. Which of these are the materials for the valve body, and which are those for the valve core? What do BB, OS&Y, and HW OP mean? I hope the expert can explain this. Thank you
Valve body material: A105; valve core material: 13Cr. Valve cover with BB-thread connection; OS&Y type stem support. As for HW OP, I don’t know either – please let those who are aware answer.
HW OP operating medium: hot water?
A105, 13Cr trim, PN16, RF, BB, OS&Y, HW OP. Valve body material: A105; valve stem material: 13Cr; pressure rating: PN16; convex surface: RF; bolted valve cover with external threads and yoke type BB, OS&Y
Personally, I think HW OP means handwheel operation
The answer above is correct; in a typical material list, the last item is always the mode of operation.
It’s quite detailed; the material list issued by our department isn’t that thorough!
HW OP should be handwheel operator