Our well has a MAASS 1" Model B pitless adapter that was installed in the mid 1970's on a 6" steel casing. The only information I've been able to find about it, is that it is a weld-on type. What are the chances that it is still in good condition after 35 or so years? Are there special tools needed to separate the male and female parts? Can a weld on adapter be replaced with a locking-nut style adapter? Thanks.
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