Mechanical · M-BSM67

Expansion Loop Detail

Materials

anchor weld

Elements

Anchors / Embeds

Connections

Welded Connection

About this detail

A piping expansion loop utilizes long-radius welded elbows to accommodate thermal expansion and contraction in steam main, condensate return, and air piping networks. Pipe supports are positioned typically along the runs, while fixed anchors constrain movement at designated points. Minimum width and height dimensions vary based on nominal pipe sizes ranging from one inch to eight inches, with specific dimensions outlined in the accompanying schedule. Manufactured expansion loops such as the Metraflex MLF80 series are also acceptable as a basis of design. When different diameter pipes are combined into a single expansion loop, the dimensions for the largest diameter pipe must be applied.

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