Flexible Expansion Loops

OVERVIEW: 

Flexicraft ML flexible pipe loops are the premier zero-thrust alternative to inline expansion joints. Instead of transferring massive pressure thrust loads to building anchors, ML Loops neutralize these forces internally, ensuring anchors only react against the loop's remarkably low spring rates.

These loops utilize high-tensile stainless steel braiding (1/2" to 14") or heavy-duty tie rods (16" to 36"+ Universal Tied models) to safely restrain internal pressure. Available in U or V geometries, they fit tight utility corridors while absorbing thermal and seismic movement in all three directions.

ML Loops are essential for central utility plants, industrial piping, and mission-critical data center cooling networks. Paired with our custom braided metal hoses, they deliver a complete, highly robust piping infrastructure for maximum facility reliability.

 

ML Loop Comparison to Metal Expansion Joint

 

 

  • BRAIDED ML U LOOP

    Braided ML U Loop flexible pipe loops for standard movements of +/- 1-1/2" or 4" in all three directions. The standard loops come with 150# flanges, weld, grooved, or any other pipe fitting. They can also be made to order for any movements or ends specified. All stainless versions, other fittings, and special movements are all available. 1" to 14" sizes.
  • BRAIDED ML V LOOP

    Braided ML V Loop flexible pipe loops for standard movements of +/- 2" or 4" in all three directions. The V loop is an alternative to the standard U loops provided by Flexicraft for tighter spaces. The standard loops come with 150# flanges, weld, grooved, or any other pipe fitting. ML Loops can also be made to order for any movements or ends specified. All stainless versions, other fittings, and special movements are all available. 1" to 14" sizes.
  • UNIVERSAL TIED U AND V LOOPS

    Universal Tied Loops in U and V configurations are engineered for large-diameter lines (16" to 36"+) and higher pressure systems. Tie rods completely eliminate pressure thrust loads on anchors while absorbing thermal and seismic movements in all three directions. Each loop is custom designed to your required movements in a split design with welded on companion flanges for simplified shipping and jobsite rigging. Available with 150#/300# flanges, weld, or grooved ends. 16" to 36"+ sizes.
  • COPPER ML LOOP

    Copper ML Loop flexible pipe loops come stocked for movements of +/- 1-1/2" or 4" in all three directions. The standard loops come with female copper sweat ends for copper pipe system. Copper ML Loops can also be made to order for any movements, and in nests for parallel piping lines. 1/2" to 4" sizes.
  • CSA/AGA ML LOOP

    Selected sizes, designs, and materials for the ML Expansion Loops have been tested by the CSA / AGA for use on gas pipe lines. These loops are used primarily in seismic zones to minimize the possibility of gas line ruptures.
  • SEISMIC ML LOOP

    The ML Loop isolates seismic movements in piping systems and on piping equipment.
  • NESTED ML LOOPS

    Nested ML Loops can be used in parallel pipe runs to keep all the expansion devices at one location and to save space.