Eaton Crouse-Hinds EYS4 Conduit Fitting - Hazardous
Part Number: EYS4
Quick Summary
EYS4 conduit sealing fitting provides reliable sealing for electrical conduit in hazardous locations across industrial facilities. Maintaining enclosure integrity while meeting explosion-protection standards is a persistent challenge in harsh plant environments. This solution supports NEC/CEC compliance and UL hazardous-location certifications with Class I, Division 1 and 2, Class II, Division 1 and 2 ratings, plus Class III in some configurations. By standardizing on this Crouse-Hinds series component, engineers gain predictable performance, easier procurement, and clearer documentation for audits and maintenance. Its compact 5 in length with vertical or horizontal sealing and a 1-1/4 in trade size complements industrial wiring layouts while improving safety and uptime.
Product Information
Extended Description
EYS4 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EYS conduit sealing fitting, Female, Feraloy iron alloy and/or ductile iron, Vertical or horizontal, 1-1/4"
Product Name
Eaton Crouse-Hinds series EYS conduit sealing fitting
Catalog Number
EYS4
Product Length/Depth
5 in
Product Height
3 in
Product Width
2 in
Product Weight
2.58 lb
UPC
782274377704
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
Sealing position
Vertical or horizontal
Gender
Female
Trade size
1-1/4"
Material
Ductile iron Feraloy iron alloy
Eaton Crouse-Hinds EYS4 3D drawing
Crouse-Hinds series EYS and EZS Explosionproof Conduit Sealing Fittings catalog page
EYS and EZS Explosionproof Conduit Sealing Fittings UL certification
EYS and EZS Explosionproof Conduit Sealing Fittings UL certification
IF 287 - Conduit Sealing
Eaton Specification Sheet - EYS4
Feature: Ductile iron and Feraloy iron alloy construction provides rugged mechanical strength and excellent corrosion resistance. Business Impact: This durable material profile reduces maintenance cycles, lowers replacement costs, and minimizes unplanned downtime in aggressive environments. Application: Ideal for refinery, chemical processing, offshore platforms, and mining facilities where harsh chemicals and physical impact are common. Feature: Sealing position is vertical or horizontal. Business Impact: Installation flexibility simplifies mounting in confined spaces and aligns with non-standard conduit runs, speeding up commissioning. Application: Wall plates, ceiling runs, or instrument panel installations in rugged plants. Feature: Trade size 1-1/4" with overall dimensions of 5 in length, 3 in height, and 2 in width; weight 2.58 lb. Business Impact: Compact yet sturdy form factor fits dense cable trays and limited IP-rated enclosures, reducing enclosure footprint and weight load. Application: Retrofit projects and new builds where space is constrained. Feature: NEC/CEC compliance and hazardous-location ratings (Class I Division 1 and 2, Class II Division 1 and 2, Class III); UL certifications. Business Impact: Regulatory alignment minimizes audit findings and accelerates procurement approvals. Application: Use in chemical plants, refineries, and heavy industry requiring explosion-protected fittings. Feature: Documentation and compatibility support (3D CAD drawing package, IF 287 guidance, specification sheets). Business Impact: Streamlines design reviews, speeds installation, and reduces field rework. Application: Engineering and maintenance teams integrating EYS4 with the Crouse-Hinds EYS/EZS ecosystem.
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FAQs
The EYS4 is a 1-1/4" trade-size conduit sealing fitting designed for flexible use in vertical or horizontal placements. Its Feraloy/ductile iron construction supports rugged service while the vertical/horizontal sealing capability simplifies mounting in tight spaces. This makes it suitable for wall, ceiling, and equipment enclosures in harsh environments.
The EYS4 is designed for Hazardous/Classified Locations and complies with NEC/CEC standards. It carries UL hazardous-location certifications and supports Class I, Division 1 and 2; Class II, Division 1 and 2; and Class III ratings, ensuring regulatory alignment for installation in chemical, oil-and-gas, and mining facilities.
Yes, EYS4 is part of the Crouse-Hinds conduit sealing fittings family and is compatible with the EYS/EZS series. For installation, reference the IF 287 Conduit Sealing instructions and utilize the provided CAD drawings to plan seal placement, ensuring vertical or horizontal orientation as required by the enclosure layout.
Key considerations include selecting the correct trade size (1-1/4"), using recommended mounting orientation (vertical/horizontal) for your enclosure, and following the IF 287 guidance. Ensure the fitting is properly seated, torque and seal contacts are verified, and that the installation aligns with NEC/CEC requirements to maintain enclosure integrity in hazardous locations.
The EYS4 delivers long service life in corrosive and demanding environments thanks to its ductile iron and Feraloy alloy; its certified ratings reduce audit risk and potential penalties. Installation efficiency and reduced field rework translate to lower maintenance costs and improved uptime, particularly in refineries, chemical plants, and mining operations where frequent seal verification is necessary.