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5. Run -and -branch Installation <br />Installation Considerations <br />This is the same method as used for configuring rigid plumbing systems <br />(copper or CPVC). <br />A directional fitting (e.g., tee or ell) is used each time as necessary <br />to change the direction of a tubing run. <br />This method requires more fittings than most other configurations. <br />The flexibility of PEX is not used to its best advantage. <br />Hot-water delivery may be slow due to the large volume of water <br />in the system. <br />Section 2 — Installation Options and Applications uponor <br />