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DI Water and Stainless Steel

DI Water and Stainless Steel

DI Water and Stainless Steel

(OP)
Can someone tell me what types of stainless steel can and can't  be used in a DI water system (resistivity > 15 MOHM)?  The application is makeup water for a steam humidifier.

RE: DI Water and Stainless Steel

Go to the www.nidi.org site for the technical paper you need. Try the paper on stainless steels for the process industries. I have seen ASTM tp 316 or 316L used on DI water. I would preferably use a thermoplastic such as ABS . see www.eurapipe.com.au to reduce the risk of corrosion and the cost of installation. The majority of RO and MF modules are constructed in ABS. See US Filters (Memtec) designs.

RE: DI Water and Stainless Steel

We have SS 304L Or MSRL (MS rubber lined) for most of DI water (resistivity > 10 mohm) piping in our plant. Have also used SS304 or HDPE piping at few places. Hope this helps !

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