Can API 6D valves have API trim 5? (Is this relatively uncommon?)

[StandardPipe307]

Hi all,

I have piping specs to follow that request both API trim 5 and API 6D, however, I'm finding that trim 5 is usually only advertised for the API 600 valves whereas API 6D valves come with options such as CS, CS + ENP, or 316 SS trim. So, ultimately I'm looking for insight as to whether or not this request for both 6D and trim 5 is a reasonable/standard request.

Thanks!

 

[GBTorpenhow]

Not typical, IMO. 6D valves are soft seated, so the trim numbers from API 600/602 describing the various metal to metal seat configurations aren't really applicable.

 

[MickMc]

API 600 I believe has just standardised typical trims with typical services therefore you can quote API Trim 5 outwith API 600 Valves in your case API 6D.

 

[Krausen]

Never seen an API 6D valve in Trim 5. As GPTorpenhow stated, these are all soft-seated valves for relatively low temp design (pipeline). Trim 5 is seen more often in Petrochem/Refinery (downstream) service at higher design temperatures associated with metal-seated valves. In the case of Trim 5, your metal seats are hardfaced for better wear resistance over time (especially in certain processes like Wet H2S, Sour Gas, etc.)