Flexible Expansion Loops

OVERVIEW: 

Flexicraft ML Loop flexible pipe loops are the premier zero thrust alternative to inline expansion joints and hard pipe loops. While traditional inline joints transfer massive pressure thrust loads directly to building anchors, ML Loops completely neutralize these forces internally.

High-tensile stainless steel braiding (1/2"–14") and heavy-duty structural tie rods (16"–36"+ Universal Tied models) restrain internal pressure forces, ensuring structural anchors only react against the loop’s remarkably low mechanical spring rates. Configured in U or V geometries and installed either horizontally (most common) or vertically, ML Loops fit tight utility corridors while absorbing thermal and seismic movement in all three directions for mission critical data center cooling networks, central utility plants, and industrial piping.

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.