Stainless Steel Casing Spacers

Casing spacer shall be a two piece shell made from 14 gauge T-304 stainless steel.
Each shell section shall have a flange formed with ribs for strength and with a
minimum of three 5/16-inch stainless steel bolts for eight inch wide and four for
twelve inch wide spacers.

Each shell shall be lined with a ribbed PVC extrusion with a retaining ridge that
overlaps the shell to prevent slippage. Runner surface shall be UHMW polymer for abrasion
resistance and a low coefficient of friction. The runners and risers shall be attached
at appropriate positions to properly support the carrier within the casing and to ease
installation.

The runners shall be attached mechanically with bolts and the bolt heads MIG welded for
strength. All risers shall be 10 gauge T-304 stainless steel MIG welded to the shell and
shall be reinforced if over 6-inch in height. All welds and metal surfaces shall be passivated.

Standard positioning within the casing will require the height of the runners and risers
to be sufficient to provide clearance between the casing and the outside diameter of the
bell or restrainer. Centered positioning within the casing will require the runners and
risers to place the carrier pipe in the center of the casing and to provide a minimum
clearance of 3/4-inch to the top of the casing.


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