Dizincification resistant brass alloys
Dizincification resistant brass alloys
(OP)
Dear all,
Is there any regulation in Europe that prohibits the use of dezincification resistant brass alloys in contact with Potable water?
We are facing a pitting corrosion failure with solenoid valves made of CuZn40Pb2 (CW617N) used in contact with unbottled drinking water. However when we contacted the supplier asking for DZR alloy, he informed that there is a regulation in US and Europe that prohibits the use of DZR brass alloys with potable water.
Thanks in advance and regards
A.Medhat
Is there any regulation in Europe that prohibits the use of dezincification resistant brass alloys in contact with Potable water?
We are facing a pitting corrosion failure with solenoid valves made of CuZn40Pb2 (CW617N) used in contact with unbottled drinking water. However when we contacted the supplier asking for DZR alloy, he informed that there is a regulation in US and Europe that prohibits the use of DZR brass alloys with potable water.
Thanks in advance and regards
A.Medhat





RE: Dizincification resistant brass alloys
Specifically NSF 61
http://www.nsf.org/services/by-industry/water-wast...
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P.E. Metallurgy, Plymouth Tube
RE: Dizincification resistant brass alloys
http://eur-lex.europa.eu/legal-content/EN/TXT/?uri...
RE: Dizincification resistant brass alloys
RE: Dizincification resistant brass alloys
Thanks for the information
@MintJulep: this is for the water quality parameters, I couldn't find any data about the DZR brass alloys that are allowed to be used with potable water
Thanks all
Regards
RE: Dizincification resistant brass alloys
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P.E. Metallurgy, Plymouth Tube
RE: Dizincification resistant brass alloys
Most common lead free alloy is C27450, but has poor DZR. Note this is true only when chloride content is high and/or ph is acidic - can your user adjust/control the pH of their water?
DZR lead free alloys (C27451):
http://muellerindustriesipd.com/pdfs/Ecostream%20C...
http://www.ldmbrass.com/back-site/upload/content/L...
RE: Dizincification resistant brass alloys