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NSI Industries 4372-LT - Transition Coupling, Rigid/IMC Conduit to Liquidtight FMC, 1 Inch, NPT Threads
NSI Industries

4372-LT

UPC: 781747203724


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Overview

The NSI Industries 4372-LT is a 1-inch Transition Coupling designed to create a code-compliant, liquid-tight connection between Rigid/IMC conduit and Liquidtight Flexible Metal Conduit (FMC). This coupling is engineered to provide a secure and reliable seal, preventing the ingress of dust and moisture, which is critical for maintaining the integrity of electrical systems in demanding environments. The NSI 4372-LT features NPT threads for a standard, robust connection to enclosures and boxes. Its design ensures high mechanical pullout strength and a positive seal, meeting stringent industry standards for liquidtight and dust-tight applications. The thermoplastic construction offers chemical resistance and non-burning properties, while the insulated body provides maximum dielectric strength. This product is an efficient solution for electrical contractors and maintenance professionals seeking to simplify transitions between different conduit types, saving time and labor during installation. Refer to Thomas & Betts publication 600.1 for additional product information. Complies with Federal Standards W-F-408 and W-F-406, and H-28 for threads. Suitable for use in Class I, Div. 2; Class II, Div. 1 and 2; Class III, Div. 1 and 2 hazardous locations where general purpose equipment is permitted per NEC Section 500-2(a). Meets Coast Guard CG293. U.L. File No. E-23018, CSA File No.
  • Connects Rigid/IMC conduit to Liquidtight Flexible Metal Conduit (FMC)
  • 1 Inch NPT threads for secure enclosure connection
  • Provides a liquidtight and dust-tight seal
  • High mechanical pullout strength
  • Thermoplastic construction with chemical resistance and non-burning properties

Specifications

Application
For creating a Liquidtight/Raintight Connection between 2 different Raceways: 1" Rigid Conduit (GRC & IMC) and 1" Liquidtight Flexible Metallic Conduit (LFMC). Suitable for use in wet locations. Concrete Tight
Flexibility
(GRC & IMC) and (LFMC)
Insulated
No
Material Quality
Steel
Special Features
Malleable Iron Body with Steel Ferrule
Standard
cULus
Trade Size
1 in.
Type
Transition
Package Weight (Imperial)
0.480 L
Package Weight (Metric)
0.218 kg
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Frequently Asked Questions

What type of threads does the hub have?

The hub of the 4372-LT coupling has NPSM Threads.

What is the primary use of the 4372-LT coupling?

The 4372-LT coupling creates a liquidtight/raintight connection between 1 in Rigid Conduit (GRC & IMC) and 1 in Liquidtight Flexible Metallic Conduit (LFMC).

What types of conduits can this coupling connect?

This coupling connects 1 in Rigid Conduit (GRC & IMC) and 1 in Liquidtight Flexible Metallic Conduit (LFMC).

Is the 4372-LT coupling suitable for wet environments?

Yes, the 4372-LT coupling is suitable for use in wet locations and provides a liquidtight/raintight connection.

What material is the 4372-LT coupling made from?

The coupling body is made of Malleable Iron, and it includes a Steel Ferrule.

What is the finish of the 4372-LT coupling?

The 4372-LT coupling has a Zinc Coated finish.

What are the dimensions of the 4372-LT coupling?

The dimensions are: A is 1 in, B is 13/16 in, and C is 1-7/8 in.

What certifications does the 4372-LT coupling have?

The 4372-LT coupling is cULus listed and complies with UL Standard 514B and NEMA Standard FB-1.

Is this coupling concrete tight?

Yes, the 4372-LT coupling is concrete tight.

What is the trade size of this coupling?

The trade size of the 4372-LT coupling is 1 inch.

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