Re: Ball valve soldering
Posted by jimbo on August 03, 2004 at 23:26:23:
In response to Re: Ball valve soldering
NIBCO in their instructions says to solder with the valve CLOSED to protect the seats. Yes, all ball valves have some type of seat. This said, it is then imperative to have the system open somehow on both ends to avoid pressure build up. SO we often solder carefully with the valve open.

NIBCO also points out that lead-free solder melts at about 460 and teflon seats are damaged at 500. SO this job needs to be done quickly with some skill. Prolonged heating of the valve is a disaster.

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