TSI INOX Conduits presents our premium Stainless Steel UNY Explosion-Proof Union, a critical component for joining and connecting conduit systems in hazardous area locations. Manufactured from premium SS316 (CF8M) stainless steel and featuring a mirror polished or #240 polished finish, our UNY unions provide secure, corrosion-resistant connections for rigid conduit and IMC in explosive environments.
The UNY (Explosion-Proof Male Union) is specifically designed for use in NEC/CEC Class I, II, and III hazardous locations, joining threaded lengths of conduit or connecting rigid conduit to devices, boxes, and enclosures. These unions are essential for facilitating modifications and permitting the removal of enclosures without turning or removing conduit. Whether you are installing in petrochemical refineries, chemical processing plants, offshore platforms, or food processing facilities, TSI's stainless steel UNY unions deliver the quality, durability, and code compliance your project demands.
TSI UNY unions meet or exceed the following hazardous location standards:
NEC/CEC Hazardous Location Ratings
Groups A, B, C, D – Flammable Gases and Vapors
Groups E, F, G – Combustible Dusts
Combustible Fibers and Flyings
| Specification | Details |
|---|---|
| Standard | UL 1203 – Explosion-Proof and Dust-Ignition-Proof Equipment |
| UL 886 | Electrical Fittings for Use in Hazardous Locations |
| CSA Standard | CSA C22.2 No. 25 & No. 30 – Enclosures & Explosion-Proof Enclosures |
| Material | Body: SS316 / Nut: CF8M (316SS) / Insert: 316SS |
| Finish | Mirror Polished / #240 Polished Finish – Body and Nut |
| Thread Type | Male NPT (National Pipe Taper) and Machined Tapered Female Threads |
| Connection Type | Male to Female (Straight) |
| Conduit Type | Rigid/IMC (Intermediate Metallic Conduit) |
| Raintight Rating | NEMA 4X – Corrosion-resistant and watertight |
| Trade Sizes | ½" through 4" |
Certified for hazardous locations, providing superior safety and reliability in explosive and combustible environments. The rugged construction prevents internal explosions from propagating to the surrounding atmosphere.
Our UNY unions are manufactured from premium 316 stainless steel (cast CF8M), providing:
The polished finish provides:
One end screws onto the conduit, while the other inserts into the box and is held in place with a locknut. This design:
TSI UNY explosion-proof unions are essential for:
UL 1203 - Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Hazardous Locations
UL 886 - Electrical Fittings for Use in Hazardous Locations
CSA C22.2 No. 25 & No. 30 - Enclosures for Electrical Equipment & Explosion-Proof Enclosures
NEMA 4X - Raintight and Corrosion-Resistant Enclosures
cULus Listed - Certified for Canada and United States
Group B Rated - Suitable for hydrogen and other Group B gases
TSI INOX Conduits provides a comprehensive stainless steel hazardous location system:
TSI INOX Conduits manufactures every UNY union using premium 316 stainless steel and state-of-the-art production processes, ensuring consistent dimensions, accurate threading, and flawless polished finishes in every product.
Based in India with a worldwide export network, TSI delivers stainless steel hazardous location conduit solutions to projects across North America, Europe, the Middle East, and beyond.
Our engineering team provides application assistance, code compliance guidance, and custom solutions to meet your exact project specifications
TSI INOX Conduits specializes in stainless steel hazardous location solutions for demanding industries, ensuring our products meet the unique requirements of each sector.
UNY Explosion-Proof Union (Male)
316SS (Body) / CF8M (Nut, Insert)
Mirror Polished / #240 Polished Finish
NPT (National Pipe Taper)
Male to Female (Straight)
Rigid and IMC
½", ¾", 1", 1¼", 1½", 2", 2½", 3", 4"
Group B (for hydrogen and other Group B gases)
Contact us today to discuss your requirements, request samples, or receive a competitive quote for bulk UNY explosion-proof unions.
Engineered for the Toughest Environments. Trusted Worldwide.
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