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Silver iron sealing conduit fitting with female threaded ends

Appleton Century Crofts

Appleton Century Crofts 4-5/16" Sealing Fitting 25% Fill 1" FNPT Conduit

SKU CH-YA0E-PYHSN

Seals conduit runs against gas, vapour or flame passage in hazardous locations with 25 % fill capacity

  • TypeConduit Fittings
  • Color/FinishSilver
  • MaterialHAWA
  • Length4.300
  • Seals conduit against gas and flame passage with 25 % fill rating
  • Hazardous-location rated for Class I Division 1 & 2 Groups A B C D
  • Female NPT threads on both ends accept 1 in IMC or RMC conduit
  • Installs vertically or horizontally for flexible routing in tight spaces
  • Grayloy iron body with silver finish resists corrosion in harsh environments

Hazardous-Location Conduit Seal

This 1-inch FNPT sealing fitting is built for Class I Division 1 and 2, Groups A through D, Class II Division 1 and 2, Groups E through G, and Class III hazardous areas. It blocks the passage of gases, vapours and flames between conduit sections. The fitting suits both horizontal and vertical runs and accepts IMC or RMC conduit of 1-inch trade size.

Iron Construction and Fill Rating

The body is cast from HAWA iron with a silver finish and measures 4.300 inches overall length. It carries a 25 percent fill rating for sealing compound, limiting the volume of compound that may be poured. Female NPT threads on both ends connect directly to conduit without adapters.

Installation Constraints

The 4-5/16-inch length requires adequate straight clearance in the raceway for vertical or horizontal mounting. Only 1-inch trade-size IMC or RMC conduit is compatible, so systems using other conduit types or sizes cannot use this fitting. Buyers needing larger trade sizes or different thread forms must select an alternative product.

Highlights

  • Seals conduit against gas and flame passage with 25 % fill rating
  • Hazardous-location rated for Class I Division 1 & 2 Groups A B C D
  • Female NPT threads on both ends accept 1 in IMC or RMC conduit
  • Installs vertically or horizontally for flexible routing in tight spaces
  • Grayloy iron body with silver finish resists corrosion in harsh environments

Specifications

TypeConduit Fittings
BrandAPPLETON ELECTRIC
Color/FinishSilver
MaterialHAWA
Length4.300

Questions about this item

How do I install this 1" FNPT sealing fitting and what step do installers often miss?

Thread the fitting onto 1" IMC or RMC conduit using the female NPT ends, orienting it vertically or horizontally as required; the step often missed is applying the correct sealing compound to achieve the 25% fill rating and maintain the hazardous-location seal.

What maintenance will this Grayloy iron fitting need over time?

Inspect the threads and sealing compound periodically for corrosion or cracking, especially in harsh environments; replace the compound if it degrades to preserve the Class I, II, III hazardous-location rating.

What limit appears first when this fitting is under sustained use in a hazardous area?

The 25% fill capacity is the primary limit; exceeding it prevents proper sealing of gases, vapors or flames between conduit sections and voids the hazardous-location rating.

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