Eaton Crouse-Hinds EYS31 SA Sealing Fitting - B rated
Part Number: EYS31 SA
Quick Summary
EYS31 SA conduit sealing fitting delivers rugged, compliant sealing for hazardous-location conduit runs in process plants. Buyers frequently struggle to maintain NEC/CEC hazardous-location compliance while installing in tight spaces or with variable orientations. The unit is UL-listed for Class I Division 1 and 2, Class II Division 1 and 2, Class III, and NEC/CEC-certified for hazardous locations. Vertical or horizontal sealing, Group B rated, and a compact 1" trade size support faster, safer installs while reducing rework and maintenance costs. This combination strengthens compliance, shorten project timelines, and lowers total cost of ownership for engineers, procurement teams, and service personnel in challenging environments.
Product Information
Extended Description
EYS31 SA Eaton Crouse-Hinds: Eaton Crouse-Hinds series EYS conduit sealing fitting, Female, Copper-free aluminum, Vertical or horizontal, Group B rated, 1"
Product Name
Eaton Crouse-Hinds series EYS conduit sealing fitting
Catalog Number
EYS31 SA
Product Length/Depth
4.5 in
Product Height
2.25 in
Product Width
1.75 in
Product Weight
0.63 lb
UPC
782274378916
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"
Material
Copper-free aluminum
Special features
Group B rated
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 - EYS31 SA
Copper-free aluminum housing provides excellent corrosion resistance while keeping weight down, reducing installation fatigue and lifecycle maintenance costs in hazardous locations. This translates to lower total cost of ownership and easier handling in confined spaces on chemical plants and refineries. The EYS31 SA supports vertical or horizontal sealing, enabling flexible mounting around equipment and in tight enclosures, which speeds up project timelines and minimizes field modification. Group B rating coupled with NEC/CEC compliance lowers risk and simplifies procurement for cross-border projects, while UL listings ensure reliability across U.S. and Canadian installations. Compatibility with the Eaton Crouse-Hinds EYS family reduces spare parts and training needs, boosting field productivity. The device’s 1" trade size, 4.5" length, and compact form factor fit common conduit systems and simplify retrofits in aging plants, with installation sheets like IF 287 guiding proper sealing practices.
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FAQs
The EYS31 SA supports 1 inch trade size conduit sealing for use in hazardous locations per NEC/CEC. It is a female sealing fitting designed for vertical or horizontal sealing, with a Group B rating and UL listings for Class I, II, and III environments. It is suitable for use in process plants, chemical facilities, and other demanding industrial settings.
Yes. The EYS31 SA explicitly provides sealing in both vertical and horizontal orientations, giving installers flexibility to adapt to enclosure geometry, wall penetrations, or equipment access. This orientation versatility helps reduce field rework and improves installation efficiency in constrained spaces.
Installers should refer to the IF 287 instruction sheet for conduit sealing guidance, ensure correct 1" trade size compatibility, and verify the fitting’s Group B rating matches project requirements. Proper torque, gasket seating, and alignment are essential for achieving a reliable seal in hazardous locations. Use compatible Eaton Crouse-Hinds components to maximize performance.
The EYS31 SA carries NEC/CEC hazardous-location certification and UL listings for Class I Division 1 and 2, Class II Division 1 and 2, and Class III environments. It is intended for hazardous/classified locations and is supported by Eaton’s installation documentation and catalog pages for explosionproof conduit sealing fittings.
The EYS31 SA improves uptime by providing a robust, code-compliant seal that reduces re-entry work during maintenance. Its copper-free aluminum construction resists corrosion, lowering replacement and maintenance costs. Orientation flexibility and Group B rating streamline installation planning across facilities, delivering faster project completion and a lower total cost of ownership for engineering, procurement, and maintenance teams.