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Heyco-Flex™ Liquid Tight
Conduit Fittings

Straight-Thru, NPT Hubs

For Flexible, Nonmetallic Liquid Tight Heyco-Flex™ I Conduit
and Heyco-Flex™ II Tubing

  • Part Numbers and Specifications
  • Features
FITS
CONDUIT/
TUBING
TRADE SIZE
  PART NO. DESC. THREAD
SIZE
PART DIMENSIONS
BODY AND SEALING UNIT
CAD
Black Gray A
Clearance
Hole
B
Max. O.A.
Length
C
Thread
Length
D E
Wrenching
Nut Thk. Flat Size
in. mm. in. mm.   in. mm. in. mm. in. mm.
1/4 8398 - HFC 1/4-PG7* PG7 .492 12,5 1.13 28,7 .45 11,4 .21 5,3 1.00 25,4  
3/8 8400 8401 HFC 3/8 1/2˝ NPT .875** 22,2 1.96 49,8 .63 16,0 .25 6,3 1.33 33,7 CAD
1/2 8402 8403 HFC 1/2 CAD
3/4 8404 8405 HFC 3/4 3/4˝ NPT 1.109 28,1 2.04 52,8 .63 16,0 .25 6,3 1.56 39,6 CAD
1 8406 8407 HFC 1 1˝ NPT 1.375 34,9 2.25 57,2 .78 19,8 .25 6,3 1.81 46,0 CAD
1-1/4 8638 8639 HFC 1-1/4† 1-1/4˝ NPT 1.734 44,0 2.07 52,6 .69 17,4 .25 6,3 2.15 54,6 CAD
1-1/2 8640 8641 HFC 1-1/2† 1-1/2˝ NPT 1.984 50,4 2.28 57,9 .78 19,8 .28 7,0 2.40 61,0 CAD
2 8642 8643 HFC 2† 2˝ NPT 2.469 62,7 2.26 66,0 .85 21,6 .31 7,9 2.98 75,6 CAD

Standard colors black and gray.
*Standard color black. Recognized under UL file E121095. See PG-7 thread specification.
**Fittings use same mounting hole size but attach two different conduit sizes.
† Certified cULus under file E28430

  • No disassembly required. Instead, the installer simply pushes the conduit or tubing onto the ferrule, then tightens the domed sealing nut. This completed assembly can then be secured in the panel by the locknut or into an NPT threaded hole.
  • Convex ferrule ensures liquid tight seal.
  • No threading of the conduit or tubing is required to install. This eliminates the possibility of cutting the conduit and creating leak paths.
  • Complete conduit/connector system is reusable. Conduit will not wind tight onto the connector during assembly and can be easily removed by pulling while turning in a clockwise direction.
  • Multiple sizes for use with Heyco-Flex Conduit and Tubing.
  • Suitable for indoor/outdoor use; for original equipment manufacturers or field installers.
  • Use of a sealing washer may be required for wet locations.
  • All nylon construction resists salt water, weak acids, gasoline, alcohol, oil, grease, and common solvents. (This feature is not assessed by UL certification and testing.)
  • If using a tapped hole, Teflon® tape is needed on the threads of the connector, for all other applications an O-ring and Locknut are needed to attain liquid tight.
  • Black connectors up to 1˝ provided with nylon locknut, packed separately. O-ring sold separately, click here.
  • Black connectors larger than 1˝ and all gray connectors provided with assembled O-ring and metal locknuts.
  • Metal locknuts: NPT, PG, and Metric.
    Nylon locknuts: NPT, PG, and Metric.

QuickSpecs

Material   Nylon 6/6
Certifications Listed under Underwriters' Laboratories File E28430
Certified by Canadian Standards Association File 84579 & 81067
Flammability Rating   94V-2
Temperature Range   -22°F (-30°C) to 221°F (105°C)
IP Rating   IP 68 up to 70 psi (5 bar) water pressure
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