Eaton EYD91 Conduit Sealing Fitting - Group B rated
Part Number: EYD91
Quick Summary
EYD91 conduit sealing fitting with drain protects enclosures in hazardous locations by preventing moisture intrusion. Field technicians frequently battle moisture buildup and seal failures in vertical conduit runs, leading to unplanned downtime. The unit carries NEC/CEC hazardous location ratings across Class I, Division 1 and 2, Class II, and Class III, reinforced by UL certifications. Built from ductile iron with a Feraloy iron alloy, and sized at 3-1/2" trade, it simplifies procurement and installation. This combination delivers reliable sealing, reduced maintenance costs, and faster assembly for explosion-proof control panels in tough industrial environments.
Product Information
Extended Description
EYD91 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EYD conduit sealing fitting with drain, Female, Feraloy iron alloy and/or ductile iron, Vertical only, Group B rated, 3-1/2"
Product Name
Eaton Crouse-Hinds series EYD conduit sealing fitting with drain
Catalog Number
EYD91
Product Length/Depth
4.75 in
Product Height
9.19 in
Product Width
4.75 in
Product Weight
13.3 lb
UPC
782274365145
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
Gender
Female
Trade size
3-1/2"
Sealing position
Vertical only
Material
Ductile iron Feraloy iron alloy
Special features
Group B rated
Crouse-Hinds series EYD and EZD Explosionproof Conduit Sealing Fittings with Drain catalog page
EYD and EZD Explosionproof Conduit Sealing Fittings with Drain UL certification
EYD and EZD Explosionproof Conduit Sealing Fittings with Drain UL certification
IF 287 - Conduit Sealing
Eaton Specification Sheet - EYD91
Feature → Business Impact → Application: Conduit sealing with drain provides moisture management in harsh environments, reducing corrosion risk and downtime, ideal for vertical conduit penetrations in chemical plants and refineries. Feature → Business Impact → Application: Ductile iron with Feraloy iron alloy delivers high strength and durability, extending service life in abrasive mining and oil & gas sites while minimizing replacement cycles. Feature → Business Impact → Application: Group B rating and NEC/CEC compliance ensure regulatory alignment for hazardous locations, lowering audit risk and enabling safe, compliant installations across Class I/II/III zones. Feature → Business Impact → Application: 3-1/2" female sealing fits standard conduits, speeding up installation and reducing spare-part inventory, which translates to faster project execution. Feature → Business Impact → Application: Vertical-only sealing position simplifies orientation during assembly, reducing rework and ensuring consistent performance in vertical runs. Feature → Business Impact → Application: Drain capability mitigates moisture accumulation, improving seal integrity for long-term reliability in explosionproof assemblies. The combination of rugged material, certification, and compatible dimensions supports maintenance teams with predictable performance and lower total cost of ownership.
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FAQs
Yes. EYD91 is designed as a female 3-1/2" trade-size conduit sealing fitting with drain and is part of the Crouse-Hinds EYD/EZD family. It aligns with common installation practices in hazardous locations, supports vertical orientation, and integrates with matching seals and connectors to ensure a seamless, code-compliant assembly.
EYD91 uses ductile iron with Feraloy iron alloy for high strength and corrosion resistance, suitable for rugged industrial environments. It is rated for Hazardous/Classified Locations under NEC/CEC standards, including Class I Division 1/2, Class II Division 1/2, and Class III, with UL certification support for safety and conformity.
Industries such as oil & gas, petrochemicals, chemical processing, mining, and power generation benefit from EYD91 due to its explosionproof sealing, moisture drain, and robust construction. The vertical-only sealing fit and 3-1/2" size make it ideal for vertical conduit penetrations in harsh environments where reliability and regulatory compliance are critical.
EYD91 carries NEC/CEC compliance for hazardous locations and UL certifications. Certification references include UL listings for explosionproof conduit fittings and Canadian approvals where applicable. For documentation, refer to UL pages and Eaton’s specification sheets to confirm ratings, compatibility, and usage in Class I/II/III environments.
The drain-equipped design reduces moisture-related seal degradation, lowering maintenance frequency and downtime. The durable ductile iron/Feraloy construction extends service life in demanding settings, reducing replacement parts and labor. Compliance with NEC/CEC minimizes regulatory risk, contributing to predictable installation costs and faster project delivery.