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Get Acrobat Reader You will need Acrobat Reader to view pdf Minimum & Maximum Flanged Pipe Spool Lengths

Distance Piece
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.
Convert To Metric Units
Swaged Pipe Spool Lengths in inches
Pipe Size Minimum Lengths Maximum
Lengths
Field2
Standard Special1
Class 150 Class 300 Class 150 Class 300
1 4 4 2 1/2 2 1/2 240 7
1 1/2 2 3/4 2 3/4 480
2 4 1/2 4 1/2 3 1/8 3 1/8
2 1/23 5 N/A 3 3/8 N/A 8
3 5 3 1/2 3 1/2
4 5 1/2 5 1/2 3 3/4 3 3/4
6 4 1/8 4 1/8 10
8 7 7 4 1/2 4 1/2 240 12

Thermalok Pipe Spool Lengths in inches6
Pipe Size Minimum Lengths Maximum
Lengths
No Options With Vent Couplings
or Studs
Class 150 Class 300 Class 150 Class 300
1 3 3 5/8 4 1/8 4 7/8 240
1 1/2 3 3/8 4 4 5/8 5 1/8
2 3 1/2 4 1/4 4 7/8 5 1/2
3 4 5 1/8 5 3/8 6 3/8
4 4 3/8 5 1/2 5 5/8 6 3/4
6 5 1/2 6 3/8 6 1/2 7 1/2
8 6 1/2 7 1/2 7 8 3/8
10 VR PTFE4 8 1/2 9 7/8 8 1/2 11 180
12 VR PTFE4 8 1/2 10 3/8 8 1/2 11 5/8
10 PP & NVR PTFE4 65 N/A 65 N/A 240
12 PP & NVR PTFE4
1Available only as fixed flange spools.
2Capability of field threaders, such as Wheeler Rex or equal, 8" size 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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