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. "This page is a machine translation of the source page, which is written in English. This translation is intended to provide a general idea of the page's content, and is not guaranteed for accuracy." Home | About Us | Contact Us | Careers | Links Feedback | Privacy Statement | Terms of Use © Copyright 2000 Crane Co. All rights reserved.