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    Jandy valve question - what's the difference between 4717 & 4944?

    As the title says, what's the difference between Jandy part number 4717 & 4944? Both are Pro series "Never Lube", 3-way, 2" - 2 1/2" valves that seem nearly identical. The only difference I've read from the data sheets is that 4944 has both internal & external stops - what does that mean? Does...
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    New member, first question.

    Hello fellow TFP members, I've been lurking on the forum for about a year now (since I purchased a home with a pool), and just recently decided to take matters into my own hands instead of blindly following the previous owner's regimen and pool store advice. I am now the proud owner of a TF-100...