Eaton Crouse-Hinds EYS51 Conduit Sealing Fitting - Hazardous
Part Number: EYS51
Quick Summary
EYS51 conduit sealing fitting from Eaton Crouse-Hinds seals conduits in hazardous locations for industrial equipment. For engineers and procurement teams, unreliable seals invite moisture ingress, dust intrusion, and costly downtime during startup and operation. This model is NEC/CEC compliant with hazardous-location ratings including Class I Division 1 and 2, Class II and III, and UL certifications for the US and Canada. The EYS51 supports vertical or horizontal sealing at 1-1/2 inch trade size and features a Group B rating, delivering safe, compliant performance in rugged environments. By combining robust materials with verified certifications, it helps you reduce maintenance costs while ensuring regulatory compliance across projects.
Product Information
Extended Description
EYS51 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EYS conduit sealing fitting, Female, Feraloy iron alloy and/or ductile iron, Vertical or horizontal, Group B rated, 1-1/2"
Product Name
Eaton Crouse-Hinds series EYS conduit sealing fitting
Catalog Number
EYS51
Product Length/Depth
2.44 in
Product Height
5.5 in
Product Width
2.44 in
Product Weight
3.53 lb
UPC
782274379302
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
1-1/2"
Material
Feraloy iron alloy Ductile iron
Special features
Group B rated
Eaton Crouse-Hinds EYS51 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 - EYS51
Feature: Feraloy iron alloy and/or ductile iron construction delivers rugged durability in harsh, wet, or dusty environments. Business Impact: Extended service life and lower replacement costs due to improved wear resistance and compliance with demanding conditions. Application: Ideal for explosion-proof conduit sealing in chemical plants and offshore facilities where ingress protection matters. Feature: Vertical or horizontal sealing capability with a female connection simplifies mounting in tight spaces. Business Impact: Faster, error-free installation and fewer field adjustments, reducing commissioning time. Application: Suitable for equipment enclosures and conduit runs with space constraints in hazardous locations. Feature: NEC/CEC compliance and hazardous-location ratings (Class I, Division 1 & 2; Class II, Division 1 & 2; Class III). Business Impact: Provides regulatory confidence and reduces risk during audits, with UL certifications for US and Canada. Application: Meets global safety standards for industrial plants and energy facilities. Feature: Group B rated with durable materials and seals designed for long service life. Business Impact: Lower maintenance cycles and predictable performance in dynamic industrial environments. Application: Critical in refinery, chemical processing, and mining installations where stringent sealing is required. Feature: 1-1/2 in trade size and 2.44 in length with a 5.5 in height footprint. Business Impact: Clear planning data for enclosure layouts and easy integration with standard conduit systems. Application: Field-ready for standard industrial conduit assemblies in hazardous areas. Industry context note: Leveraging Feraloy and ductile iron, this conduit sealing fitting aligns with the common industry practice of using robust, repair-friendly materials in explosion-protected fittings, supporting long-term maintenance planning and supplier reliability.
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FAQs
Yes. The EYS51 is a 1-1/2 inch trade size conduit sealing fitting with vertical or horizontal sealing, designed for hazardous locations. It uses a female connection to seal and protect the enclosure interface, delivering a reliable barrier against moisture, dust, and ignition sources in Class I, II, and III environments. Proper mounting ensures optimal ingress protection and compliance with NEC/CEC standards.
The EYS51 carries NEC/CEC compliance for hazardous locations, with NEC Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III ratings. It is UL certified for both US and Canada, and rated for Hazardous/Classified Locations, supporting rigorous industry safety and regulatory audits in chemical, oil and gas, and mining facilities.
Yes. The EYS51 is rated for Class I Division 1 and Division 2, as well as Class II Division 1 and 2 and Class III locations. This aligns with NEC/CEC requirements for explosion-protected conduit seals, enabling safe operation in potentially explosive atmospheres around process equipment and electrical enclosures.
The EYS51 measures 2.44 in in length and width, stands 5.5 in tall, and weighs 3.53 lb. The trade size is 1-1/2 in, with a female configuration for sealing in either vertical or horizontal orientations, making it straightforward to plan enclosure layouts and mounting clearances.
Prioritize clean mating surfaces and proper torque on mounting interfaces to ensure a reliable seal. Use compatible gaskets and follow the NEC/CEC guidelines for hazardous locations. The EYS51’s rigid materials (Feraloy/ductile iron) resist wear, reducing service intervals, while vertical/horizontal sealing options simplify field adjustments in cramped installations.