Valves for steam service

[Oxidation]

I'm out on a plant in Egypt, the supplier has sent out some ball & gate valves with no tag/I.Ds on them & so I'm not sure which valve goes where.
I have some with a seat of A105N body, CR13HF, disc CR13HF, stem CR13
& some A105N body, F6 stem, F6 disc, F6HF seat, R35WB050

Which of these would be suitable for superheated steam at 16barg & 300degrees C??

Does anyone have a list of what these specifications mean, I have tried various web sites but come up with nothing.

Thanks

 

[BigInch]

I can understand your apparent reluctance, but my advice is to get the right tag numbers for them or, send them back. If you put them in somewhere without the right IDs, you'll likely find yourself shipped over to Iraq.

Going the Big Inch!

http://virtualpipeline.spaces.msn.com

 

[Joesteam]

There are two major issues to look at.
Body Material: It is not just the material but the pressure rating. For each material there must also be a class that will dictate the pressure/temperature limitations for the valve. With just the body material and no class, it will be almost impossible to say if a specific valve can hit a pressure/temperataure point

Seat Material: You are over 500F. There are some seats that can handle up to 600F, but at this higher temperature and steam application I would only recommend metal seated valves.

So, my recommendation for both safety and application is to get the correct valve and not try either of the ones that you have for this application.

 

[Ashereng]

I agree with the other poster.

If you don't know which valves go where, you need to find out, and not from a forum like this.

There are many considerations, other than material of body and material of seat, including:
- pressure rating
- seat leakage rating
- shutoff/maximum valve torque (to match to actuator)




"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
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[BigInch]

One thing for certain, the QA/QC guys will go ballistic jumping on his ...

Going the Big Inch!

http://virtualpipeline.spaces.msn.com