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EC Explosionproof Couplings

Crouse-Hinds series EC explosionproof couplings are used in hazardous areas where a flexible member is required in a conduit system to accomplish difficult bends, or to allow for movement or vibration of connected equipment or units.

EC Explosionproof Couplings

Certifications and compliances

NEC

  • 1/2” and 3/4” (brass and stainless): Class I, Division 1, Groups A, B, C, D
  • 1” to 2” (brass and stainless): Class I, Division 1, Groups C, D
  • All sizes for use in Class II, Division 1, Groups E, F, G; Class III

 

UL standard

  • UL1203
  • Lengths up to 36” – UL Listed
  • Lengths above 36” – not UL Listed

 

ATEX and IECEx – ECGJH S516 only

  • 1/2” and 3/4” (4” to 36” flexible length only) – Ex d IIC, IP66
  • 1” to 2” (4” to 36” flexible length only) – Ex d IIB, IP66

Design features

  • Rugged design to withstand explosive pressure (Class I) and mechanical abuse
  • Liquidtight for wet locations
  • For use where lack of space makes use of rigid conduit difficult
  • Wire duct liner in sizes 1/2” to 2” insulates against grounds and burn through from short circuit
  • No bonding jumpers required; metallic braid provides continuous electrical path
  • ECGJH combination has two threaded male end fittings
  • ECLK combination has one female union and one male threaded end fitting

Standard materials

  • End fittings – 1/2” to 2”: forged brass, natural; 2-1/2” to 4”: stainless steel, natural
  • Female unions – 1/2” to 1”: steel, electrogalvanized with chromate treatment; 1-1/4” to 4”: Feraloy iron alloy, electrogalvanized with aluminum acrylic paint
  • 1/2” to 2” couplings have bronze braid covering and flexible brass inner core; packing is woven cotton braid impregnated with asphalt
  • 2-1/2” to 4” couplings have a Type 304 stainless steel braid
  • ECGJH couplings available in all stainless steel
  • Flexible PVC protective coating available for highly corrosive locations
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