ABB - Installation Products UNF705-B - PVC Coated Explosion and Dust-Ignition Proof UNF Female Union, Pipe Size 2-1/2 Inch/63 Metric, 3 Piece, for Hazardous and Non-hazardous Locations, Overall Length 3.50 Inch/88.90 Millimeters, Overall Diameter 4.31 Inch/109.47 Millimeters, Electrogalvanized Steel, Light Blue
ABB - Installation Products

UNF705-B

UPC: 704508413323


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Overview

The ABB UNF705-B is a 3-piece, PVC-coated, explosion and dust-ignition proof UNF female union designed for connecting rigid conduits in hazardous and non-hazardous locations. Manufactured by ABB Installation Products, the UNF705-B features electrogalvanized steel construction with a durable light blue PVC coating, providing excellent corrosion resistance and enhanced visibility in demanding industrial environments. Key specifications include a pipe size of 2-1/2 inches (63 metric), an overall length of 3.50 inches (88.90 millimeters), and an overall diameter of 4.31 inches (109.47 millimeters). The union is rated for use in wet locations and areas requiring corrosion protection, meeting NEC/CEC requirements for Class I, Divisions 1 and 2, Groups B, C, D; Class II, Divisions 1 and 2, Groups E, F, G; and Class III, Divisions 1 and 2. It also complies with NEMA 3, 4, 7 CD, and 9 EFG standards. Ideal for applications in oil and gas, chemical processing, mining, and other hazardous environments, the UNF705-B ensures secure and reliable conduit connections. Its precision NPT threaded hubs allow for trouble-free field installation with rigid or IMC conduit. The union's design includes a unique concentric ring for critical flame path control, ensuring safety in explosive atmospheres. The PVC coating provides additional corrosion protection and maintains grounding continuity of the rigid conduit system.
  • 3-piece explosion and dust-ignition proof design for hazardous locations
  • 2-1/2" pipe size with electrogalvanized steel construction
  • Light blue PVC coating for corrosion resistance and visibility
  • Overall length: 3.50 inches (88.90 mm), diameter: 4.31 inches (109.47 mm)
  • Suitable for wet locations and areas requiring corrosion protection

Specifications

Application
To Connect Conduit to Conduit, or to Provide a Means for Future Modification of the Conduit System
Color
Light Blue
Length
3.5 in
Length
88.9 mm
Material
Steel
Material
Electrogalvanized Steel with PVC Coating
Material Quality
Steel
Outside Diameter
4.31 in
Outside Diameter
109.47 mm
Series
UNF705
Size
2-1/2 Inch (63 Metric)
Special Features
Compact Design Which Permits Assembly with a Minimum of Clearance to Other Adjacent Conduit and/or Equipment
Standard
UL 1203, CSA
Trade Size
2-1/2 in , 63 mm
Type
Female Union
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
4.960 L
Package Weight (Metric)
2.250 kg
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Frequently Asked Questions

What pipe size does the UNF705-B support?

The UNF705-B supports a 2-1/2 inch pipe size (63 metric).

Is the UNF705-B suitable for wet locations?

Yes, the UNF705-B is rated for wet locations and provides raintight protection.

What materials is the UNF705-B made from?

The UNF705-B is constructed from electrogalvanized steel with a light blue PVC coating.

What are the overall dimensions of the UNF705-B?

The overall length is 3.50 inches (88.90 mm) and the overall diameter is 4.31 inches (109.47 mm).

What hazardous location ratings does the UNF705-B meet?

The UNF705-B meets Class I, Divisions 1 and 2, Groups B, C, D; Class II, Divisions 1 and 2, Groups E, F, G; and Class III, Divisions 1 and 2 ratings.

Can the UNF705-B be used for future conduit system modifications?

Yes, the UNF705-B is designed as a three-piece coupling to allow future modifications to the conduit system.

What certifications does the UNF705-B have?

The UNF705-B is UL Certified under UL 1203 and CSA certified under CSA C22.2 No. 25 and No. 30.

What is the purpose of the PVC coating on the UNF705-B?

The PVC coating provides corrosion protection and helps maintain grounding continuity of the rigid conduit system.

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