Scott H.E. Welch wrote: > Steve Sipe <scsipe@suscom.net> writes: > >> 1. They're unacceptable per ABYC. They won't pass muster on a survey. >> 2. They will leak. If not oil out, air in. >> 3. They will come loose. >> 4. The compression nut or the ferrule can crack/break/fail. >> > > Sorry, but this is not right. If you use a Swagelok compression fitting, it > will last more or less forever, be tough as nails, withstand several thousand > PSI without leaking, and still be easy to disassemble in 20 years. It will > also meet both ABYC and CG regulations. > > Scott Welch > "Island Eagle" > www.islandeagle.net > My reference was to compression fittings using a brass ferrule on soft copper tubing, commonly used on domestic water plumbing, that are not acceptable. Swagelok fittings are a proprietary type fitting and are not the same, and are acceptable. Sorry if I was misleading. I still wouldn't ever use common plumbing compression fittings on an oil line, just asking for problems. steve steve