Effects of applying epoxi paint to a flanged piping joint
Effects of applying epoxi paint to a flanged piping joint
(OP)
In order to avoid corrosion is it possible to apply epoxi paint to the contacting faces of a water line FF flanged joint?. Will it has effects on the short or long term?.





RE: Effects of applying epoxi paint to a flanged piping joint
Patricia Lougheed
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RE: Effects of applying epoxi paint to a flanged piping joint
You can use a lead free galvanizing, which also has limited protection.
You can use a heavy NSF Grade grease, it also has limited protection.
Cathodic system is another option.
Stainless Steel is your best defense.
Charlie
www.facsco.com
RE: Effects of applying epoxi paint to a flanged piping joint
Based on this history/practice at least for normal water applications, unless it comes as a feature of the coating/lining system of a new standardized product (e.g. fusion-bonded epoxy coated valves etc.), as another has stated it may not be the best idea to put heavier (and inevitably some more variable thickness?) coatings on flange faces.
RE: Effects of applying epoxi paint to a flanged piping joint
Is your pipe CS. If it is, I don't think the rust contribution of the flange would be a significant portion. Or, are you concerned about leaks?
"Do not worry about your problems with mathematics, I assure you mine are far greater."
Albert Einstein
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RE: Effects of applying epoxi paint to a flanged piping joint
RE: Effects of applying epoxi paint to a flanged piping joint
it is cs. water piping line, 8" Dia. at 150 psi, aprox. 3000 m long.
it was also a proposal from the sucontractor in order to avoid corrosion on the faces of the fanges. because he wants to start to fabricate and paint the piping spools well ahead of the instalation time. But I was concerned if it could cause leakage effects later on during operation.
Sorry again for my englis grammar, but english is not my first language. But your comments are valuable.
RE: Effects of applying epoxi paint to a flanged piping joint
This was mainly to prevent corrosion during storage and shipment.
We used it on spool surfaces because the Oring always needs to be lubricated, and it will stay on for 10-years, longer underground if not disrurbed.
Charlie
www.facsco.com
RE: Effects of applying epoxi paint to a flanged piping joint
RE: Effects of applying epoxi paint to a flanged piping joint
Larry
RE: Effects of applying epoxi paint to a flanged piping joint