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P-409.3 Unions and Compression Fittings
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Union and compression fittings shall be permitted in trap seals on the inlet
side of the trap and to connect the fixture trap to the fixture drain line. These fittings shall be installed either at the
wall line or floor line inside the room where the fixture is located.
Related Code Sections
P-409.3 Joints, Unions and Compression Fittings
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