on this site FORUM
60,000 Q&A topics -- Education, Aloha, & Fun
Corrosion Black iron vs Copper
I am looking for a cheap and effective coating that will prevent corrosion between black iron and brass in a NPT threaded assembly. The surfaces to be coated are the female threads.
- Montreal, Quebec, Canada
The best and simplest thing to do is to install a dielectric union. In the USA I bought my last ones at Home Depot. About $5.00 US If it is not critical, you can connect it with PVC fittings.You will want a union in it so it can be unscrewed if you needed to do maintenance on any part of the system.
- Navarre, Florida
Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.
If you need a product/service, please check these Directories:
JobshopsCapital Equip. & Install'nChemicals & Consumables
Consult'g, Train'g, SoftwareEnvironmental Compliance
How Google uses data when you visit this site.