Eaton Crouse-Hinds UNY705 Union - Hazardous/Classified
Part Number: UNY705
Quick Summary
UNY705 union from Eaton Crouse-Hinds provides rugged, explosion-proof conduit connections for rigid/IMC systems used in hazardous locations. Engineers often face leaks, weak seals, and maintenance challenges when selecting unions for harsh environments, which can lead to unplanned downtime. This design meets NEC/CEC requirements and hazardous-location ratings, including Class I Division 1 and 2, Class II Division 1 and 2, and Class III, ensuring regulatory compliance across facilities. With feraloy iron alloy construction and a 2-1/2 inch trade size, the UNY705 delivers durable performance under thermal and mechanical stress, while enabling easier sourcing and standard installation. Using a purpose-built conduit union reduces downtime, simplifies replacement cycles, and improves overall wiring integrity for downstream controls and safety systems.
Product Information
Extended Description
UNY705 Eaton Crouse-Hinds: Eaton Crouse-Hinds series UNY union, Rigid/IMC, Male, Feraloy iron alloy, 2-1/2"
Product Name
Eaton Crouse-Hinds series UNY union
Catalog Number
UNY705
UPC
782274648507
Product Length/Depth
5.41 in
Product Height
4.16 in
Product Width
4.16 in
Product Weight
5.4 lb
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
Conduit type
Rigid/IMC
Gender
Male
Material
Feraloy iron alloy
Trade size
2-1/2"
Crouse-Hinds series Explosionproof Conduit Unions, Elbows and Tees catalog page
Explosionproof Conduit Unions, Elbows and Tees Canadian certification
Explosionproof Conduit Unions, Elbows and Tees Canadian certification
Eaton Specification Sheet - UNY705
Feature → Business Impact → Application: The UNY705 uses a feraloy iron alloy body, delivering exceptional mechanical strength and corrosion resistance in aggressive environments, which reduces the need for frequent replacements and lowers total cost of ownership in oil & gas, chemical processing, and mining facilities. This translates to improved MTBF and safer installations for hazardous-area wiring, enabling maintenance teams to focus on uptime-critical tasks. Feature → Business Impact → Application: Rigid/IMC compatibility and a male union design provide secure mating and reliable sealing, even under vibration and temperature cycling, which minimizes leaks and arc-risk in motor feeders and control cabinets. This supports safer startup/shutdown sequences in refineries and water treatment plants while meeting strict installation standards. Feature → Business Impact → Application: The 2-1/2 inch trade size aligns with common enclosures and conduit runs, reducing the need for adapters and simplifying field assembly, which shortens project timelines in new builds and retrofit projects. Feature → Business Impact → Application: NEC/CEC compliance and Class I/II/III ratings offer regulatory assurance and audit readiness, limiting compliance risk in hazardous locations and enabling smoother procurement across global sites. Feature → Business Impact → Application: Availability within Eaton’s UNY family provides ecosystem compatibility, ensuring seamless substitutions, streamlined spares management, and consistent installation practices across facilities.
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FAQs
UNY705 is a male union designed for rigid/IMC conduit with a 2-1/2 inch trade size. It mates with standard UNY-family fittings and supports secure, explosion-proof connections in hazardous locations. The design minimizes the need for adapters and simplifies field installation, helping maintain consistent wiring integrity across installations.
UNY705 carries NEC/CEC compliance and hazardous-location ratings, including Class I Division 1 and 2, Class II Division 1 and 2, and Class III. It is designed for Hazardous/Classified Locations, aligning with area classifications and enabling regulatory-approved installations in demanding industrial environments.
This union is common in chemical plants, oil and gas facilities, refineries, and mining operations where rigid/IMC conduit must be connected safely in hazardous zones. Its rugged construction and certified ratings make it suitable for motors, pumps, and control panels exposed to dust, chemicals, and temperature fluctuations.
The feraloy iron alloy body delivers high strength and corrosion resistance, while the secure male connection ensures durable seals, reducing leakage and arc-risk. Compliance with NEC/CEC and hazardous-location ratings supports safer electrical installations, and the standard 2-1/2 inch size accelerates field assembly and reduces unplanned downtime.
UNY705 offers long service life under harsh conditions, lowering replacement frequency and maintenance costs. By aligning with Eaton’s UNY family, spare parts and documentation are readily available, improving procurement efficiency and reducing total cost of ownership across multiple sites.