If you read the top of the table this is what it says.
PVC - Equivalent Length Friction Loss in Fittings
Minor loss for PVC and CPVC fittings in equivalent length of straight pipe
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Approximate friction loss for PVC and CPVC fittings in Equivalent Length in feet of Straight Pipe for water can be found in the table below:
Notice the Equivalent Length in feet of straight pipe. Not equivalant feet of head pressure!
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