Eaton Crouse-Hinds EYS21 Conduit Sealing Fitting - Group B
Part Number: EYS21
Quick Summary
Eaton Crouse-Hinds EYS21 conduit sealing fitting is designed to seal conduits in hazardous locations. This helps minimize ingress and corrosion during maintenance and field servicing, reducing downtime and the need for rework. It carries NEC/CEC compliance and hazardous-location certifications, including Class I Division 1 and 2, Class II Division 1 and 2, Class III, with UL listings. Designed for a 3/4 inch trade size and vertical or horizontal sealing, it integrates with ductile iron or Feraloy iron alloy bodies to streamline installations and ensure robust performance across demanding environments. This combination delivers reliability for manufacturing, chemical processing, and energy infrastructure where downtime is costly.
Product Information
Extended Description
EYS21 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, 3/4"
Product Name
Eaton Crouse-Hinds series EYS conduit sealing fitting
Catalog Number
EYS21
Product Length/Depth
1.5 in
Product Height
3.69 in
Product Width
1.5 in
Product Weight
1.06 lb
UPC
782274378602
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
3/4"
Material
Ductile iron Feraloy iron alloy
Special features
Group B rated
Eaton Crouse-Hinds EYS21 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 - EYS21
Feature: Vertical or horizontal sealing provides installation flexibility. Business Impact: Reduces on-site adjustments and rework, accelerating project timelines. Application: Ideal for retrofit and new builds in restricted spaces where orientation matters. Feature: Group B rated, hazardous-location qualified design. Business Impact: Enhances safety and regulatory compliance, lowering risk of non-compliance penalties and insurance costs. Application: Essential in Class I, II, III environments across oil, gas, chemical, and mining facilities. Feature: Ductile iron and Feraloy iron alloy construction. Business Impact: Delivers rugged durability and corrosion resistance in aggressive industrial media, extending service life and reducing replacement cycles. Application: Long-term reliability in harsh process plants. Feature: 3/4 inch trade size and female configuration. Business Impact: Simplifies mating with standard conduits and fittings, lowering procurement complexity and field labor. Application: Common in industrial electrical retrofits and new installations. Feature: NEC/CEC compliance and UL listings. Business Impact: Streamlines certification workflows and audit readiness, supporting fast regulatory approval. Application: Widely applicable to hazardous-location projects across global markets. Feature: Vertical or horizontal sealing capability. Business Impact: Supports flexible routing and installation in tight spaces, boosting installation efficiency and reducing downtime. Application: Suitable for vertical duct runs and wall- or ceiling-mounted conduit layouts.
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FAQs
To install the EYS21 conduit sealing fitting in hazardous locations, verify the 3/4 inch trade size and orientation (vertical or horizontal), follow the IF 287 sealing instructions, and mount into the conduit system using compatible ductile iron or Feraloy alloy bodies. Ensure proper sealing compound is used and tighten to the specified torque, then perform a leak clearance test.
EYS21 carries NEC/CEC compliance and hazardous-location classifications, including Class I Division 1 and 2, Class II Division 1 and 2, Class III, and a Group B rating. It is UL-listed for hazardous locations, supporting safe operation in explosion-prone environments and regulatory alignment for global projects.
Yes. EYS21 is designed for both vertical and horizontal sealing positions, enabling flexible routing in tight spaces and retrofit projects. The 3/4 inch female configuration simplifies mating with standard conduit fittings, preserving explosion-protection integrity in hazardous locations.
EYS21 is NEC/CEC compliant and rated for hazardous locations (Class I, II, III). UL listings confirm suitability for explosion-proof conduit fittings in relevant regions, ensuring regulatory compliance and reliability across hazardous environments.
Using EYS21 reduces downtime by delivering reliable sealing and ingress protection, lowering maintenance costs and ingress-related failures. Its durable material construction and Group B rating extend service life in harsh environments, reducing replacement frequency and accelerating upgrade projects.