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NSF-Rated No Hub Coupling

Introducing Koflex NSF-Rated no hub couplings. These enhanced couplings feature a clamp, screws, and shield made entirely of stainless steel for maximum reliability and resistance to corrosion. Depending on the size, they are available with either 2 or 4 bands, providing a super tight seal. Sizes ranging from 1½” – 10″ are available to satisfy any type of application.

-Soft Rubber Gaskets Mold to the Pipes
-Watertight Seal
-Low Expansion and Contraction
-Resistance to Vibrations

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Models

  • Part #

    Description

    Qty/Box

    KF-NHC-112N

    1-1/2″ NSF No Hub Coupling, 2 Bands, NSF

    100

    KF-NHC-200N

    2″ NSF No Hub Coupling, 2 Bands, NSF

    100

    KF-NHC-300N

    3″ NSF No Hub Coupling, 2 Bands, NSF

    100

    KF-NHC-400N

    4″ NSF No Hub Coupling, 2 Bands, NSF

    100

    KF-NHC-500N

    5″ NSF No Hub Coupling, 4 Bands, NSF

    30

    KF-NHC-600N

    6″ NSF No Hub Coupling, 4 Bands, NSF

    30

    KF-NHC-800N

    8″ NSF No Hub Coupling, 4 Bands, NSF

    15

    KF-NHC-1000N

    10″ NSF No Hub Coupling, 4 Bands, NSF

    12

Technical Data

CERTIFICATIONS, APPROVALS, LISTINGS, & COMPLIANCE

  • UPC
  • CSA
  • NSF
  • Conforms to CISPI 310, ASTM C1277

 

Materials

ClampStainless Steel 301
HousingStainless Steel 301
ScrewStainless Steel 305
ShieldStainless Steel 301
GasketElastomeric compound conforming to ASTM C564

 

Technical Data

Installation Torque60 in/lbs

 

Sleeve Test

TestPhysical Tests – Minimum or Maximum RequirementsASTM
Tensile Strength1500 psi minimumD412
Elongation250 minimumD412
Durometer70 ± 5 @ 76°F ± 5°FD2240
Accelerated Aging15% maximum tensile and 20% maximum elongation deterioration, 10 points maximum increase in hardness, all determinations after oven aging for 96 hours at 158°FD573
Compression Set25% maximum after 22 hours @ 158°FD395
Oil Immersion80% maximum volume change after immersion in IRM 903 for 70 hours @ 212°FD471
Ozone CrackingNo visible cracking @ 2 times magnification of the gasket after 100 hours exposure in 1.5 ppm ozone concentration at 100°F. Testing and inspection to be on gasket which is loop mounted to give approximately 20% elongation of outer surfaceD1149
Tear Resistance150 lbs minimum per inch of thicknessD624
Water Absorption20% maximum by weight after 7 days at 158°FD471

 

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