Brine Service
Brine Service
(OP)
Hello,
For Brine Service application, our spec indicate to use monel N04400 materials for NPS smaller than 2". However, drain and vent valves for Monel 400 materials are way to expensive. Other alternative is to internally coast CS valves, but it's really hard to interally coat smaller valves than 2". Is there any other alternative for this application?
Thank you,
Miten
For Brine Service application, our spec indicate to use monel N04400 materials for NPS smaller than 2". However, drain and vent valves for Monel 400 materials are way to expensive. Other alternative is to internally coast CS valves, but it's really hard to interally coat smaller valves than 2". Is there any other alternative for this application?
Thank you,
Miten





RE: Brine Service
What temperature?
There are other Ni alloys that you could use (C276) that may be more available, but they won't cost less.
There are plenty of cheaper options that won't work.
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P.E. Metallurgy, Plymouth Tube
RE: Brine Service
The assumption was made to have Chloride concentration : 10%, Temperature: 35 C, pH level: 8, oxygen concentration: 15 ppmw. However, it was found later that chloride concentration will be even less.
We are trying to find alternative for smaller valves (1/2 - 1 1/2) which will be used for drain or vent valves, and does not require to be as expensive as monel valves. They are such small size that internally coating is not feasible.
Thank you,
Miten
RE: Brine Service
This is especially the case at the seal surface itself.
Follow what others have learned the hard way, use the correct metallurgy.
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P.E. Metallurgy, Plymouth Tube
RE: Brine Service
RE: Brine Service
Use C276 with PEEK seats and then don't worry about the valves, ever.
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P.E. Metallurgy, Plymouth Tube