HF acid valve a216 suplemental

[msb3]

My company recently received some carbon steel valves for HF acid. Looking for clarification on the A216 S16 requirements. Would the Cu+Ni=0.15max apply to both body and bonnet. Or just the body of the valve? The bonnets are not meeting this part.

Thanks

 

[cloa]

Better to use the ASTM forum

http://www.eng-tips.com/threadminder.cfm?pid=177

http://www.eng-tips.com/threadminder.cfm?pid=1529

Use translation assistance for Engineers forum

Note the rules include No Student posting

 

[mrfailure]

Bonnets probably do not need to meet the S16 requirement as they would not be in contact with HF, unlike the valve components.