Page 18 - Straub-Couplings-Catalog-2017
P. 18

 FORCES TO AVOID
STRAUB PIPE COUPLINGS
*Please consult the factory or an authorized STRAUB Distributor for any installation or application questions.
COUPLING/PIPE COMPATIBILITY:
   Pull-Out Forces
   Axial Force (FA)
OK for STRAUB-GRIP Type. Not resisted by STRAUB-FLEX/OPEN-FLEX
    Sheer
Loads*
(consult factory for specific data)
 Weight (FR)
Not resisted by STRAUB-FLEX or STRAUB-GRIP
    Knee
   Buckling (Fk)
Not resisted by STRAUB-FLEX or STRAUB-GRIP. Pipes must be properly guided.
   Pipe Materials
 Stiffening Ring
  STRAUB-METAL GRIP/ STRAUB-GRIP-L
 STRAUB-FLEX/STRAUB- OPEN-FLEX
 STRAUB-COMBI GRIP/ PLASTI GRIP
  Remarks
 Steel, Stainless Steel
 -
  Yes
 Yes
 Yes
  Straub flex must be properly anchored
 HDPE, PP, Noryl
 Required
  -
 Yes
 Yes
  For STRAUB-FLEX pipes must be properly anchored
 PVC, ABS, CPVC, C900
  -
   Yes
  Yes
  Yes
   Stiffening Ring required for temps above 105°F
  CFK, CRP, FRP, GRP (Centrifugal wound pipes)
  -
 -
Yes
  -
 Seal pipe surface at the cutting edge
 Asbestos cement
  -
   -
  Yes
  -
     Concrete, CPP
  -
 -
Yes
  -
 Equalize rough surface with coating or filler
 Cast (ductile, grey)
 -
  Yes
 Yes
 Yes
   Glass, Ceramic
  -
   -
  Yes
       Copper-Nickel
  -
 Yes
Yes
  Yes
 Soft Copper with Stiffening Ring only
 Aluminum
  -
   Yes
  Yes
  Yes
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