Eaton Crouse-Hinds EYD51 Conduit Sealing Fitting - Group B
Part Number: EYD51
Quick Summary
EYD51 is a conduit sealing fitting with drain designed for explosion-hazardous, Class I and II locations in industrial facilities. It addresses moisture ingress and corrosion risk at cable entries, reducing maintenance and unplanned downtime. This product meets NEC/CEC standards and UL certifications for hazardous locations, including Class I, Division 1 and 2, and Class II, Division 1 and 2, with a Group B rating, ensuring robust protection in challenging environments. By standardizing on a single, drain-equipped sealing solution, electrical engineers can streamline installation, procurement, and compliance documentation while lowering lifecycle costs. For installers, the compact, female, 1-1/2 inch size simplifies field routing and compatibility with standard conduits in hazardous plants.
Product Information
Extended Description
EYD51 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, 1-1/2"
Product Name
Eaton Crouse-Hinds series EYD conduit sealing fitting with drain
Catalog Number
EYD51
Product Length/Depth
2.44 in
Product Height
5.5 in
Product Width
2.44 in
Product Weight
3.85 lb
UPC
782274365091
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
1-1/2"
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 - EYD51
Drain-enabled sealing provides integrated moisture management at conduit entries, dramatically reducing moisture ingress and corrosion risk. This translates to longer life for field devices and lower maintenance costs in harsh environments. Ideal for 1-1/2 inch female fittings in Class I and II hazardous locations where drainage is critical for uptime. Ductile iron with Feraloy iron alloy delivers high impact resistance and static load tolerance, even in vibration-heavy installations. This material choice increases service life and reduces replacement cycles in outdoor and chemical plants. With vertical sealing orientation, the EYD51 aligns with standard conduits, simplifying mounting and routing in constrained spaces. NEC/CEC compliance paired with UL hazardous-location certifications streamline regulatory approvals. This reduces revision cycles during audits and accelerates commissioning for greenfield and retrofit projects. Used in chemical, oil, and power facilities, the device supports safe, compliant conduit management. End-users gain predictable performance data for maintenance planning and spare part inventories. Installation efficiency is enhanced by a standard 1-1/2 inch female connection that matches existing fittings. Vertical drain and drain-through design simplify field drainage and condensate removal. These features enable faster testing, reduced risk of water intrusion, and fewer field modifications. In retrofit scenarios, space constraints are minimized and field modifications are avoided. Group B rating differentiates EYD51 from non-rated fittings, delivering superior reliability in hazardous zones. Lifecycle cost improves due to reduced maintenance, longer mean time between failures, and easier spares planning. Procurement benefits include compatibility with Eaton Crouse-Hinds ecosystems and clearer documentation for compliance packages. This aligns with corporate safety programs and cost-control initiatives worldwide.
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FAQs
EYD51 is used to seal conduit entries in hazardous or classified locations, providing a drain to remove moisture and condensate and prevent moisture ingress that can compromise electrical connections. It is a 1-1/2 inch trade-size, female sealing member made from ductile iron or Feraloy iron alloy, compatible with standard conduits and wiring methods in Class I and II environments.
Yes, EYD51 specifies a vertical sealing position to optimize drainage flow and condensate removal. This orientation ensures gravity-assisted drainage and reduces moisture accumulation inside the fitting and connected conduit runs. While the body is compatible with standard 1-1/2 inch conduit threads, its installation should follow the vertical alignment requirement to maximize performance in hazardous locations.
EYD51 carries NEC/CEC compliance and UL certifications for use in hazardous locations. It is rated for Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III environments, with a Group B rating. These certifications support regulatory acceptance, simplify project approvals, and align with common global safety requirements for explosion‑proof conduit fittings in chemical, oil, and power facilities.
EYD51 integrates drainage and sealing to minimize moisture intrusion and corrosion at the conduit entry, reducing maintenance cycles and extending component life. The 1-1/2 inch female connection aligns with standard fittings, easing field assembly, while the vertical drain feature simplifies condensate management during startup. UL and NEC/CEC compliance also reduces revision cycles during audits and accelerates commissioning for greenfield and retrofit projects.
Constructed from ductile iron and Feraloy iron alloy, EYD51 delivers high mechanical strength, impact resistance, and durability in demanding environments. This material choice supports prolonged service life under vibration, temperature fluctuations, and corrosive condensates typical of outdoor and chemical plants. The Group B rating differentiates it from standard fittings, offering reliable performance in hazardous areas while maintaining compatibility with existing Eaton Crouse-Hinds ecosystem.