Div. B › Part 7 › 7.3 › 7.3.3 — Joints and Connections

7.3.3.12 — Copper Joints Used Underground

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(1) Except as provided in Sentence (2), joints in copper tubes installed underground shall be,
(a) made with either flared or compression fittings, or
(b) brazed using a brazing alloy within the American Welding Society’s AWS-BCuP range.
(2) Compression fittings shall not be used underground under a building.
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