For filling spaces greater in length than the maximum spacer (3") but
less than the minimum flanged pipe spool, a distance piece is used. A
distance piece does not have flanges, but is held in place by using long
bolts or studs between the adjacent flanges.
1Available only as fixed flange spools. 2Capability of field threaders, such as Wheeler Rex or equal,
requires an alternate method of threading. Wheeler Rex will only thread up
through 6". 3Only available in PP liner. 4 10" - 12" piping available with PTFE and PP liners only.
VR = Vacuum rated to 450°F. NVR = Not rated for vacuum service.
PP lined spools are rated for full vacuum service up to 225°F. 5 PP & NVR PTFE spools less than 8" long have one fixed flange. 6 Thermalok minimum lengths can be reduced by using fixed flanges at
one or both ends at an additional cost. Consult factory for details.
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