The insulated clevis hanger is a new generation of clevis hangers that, with its polymer structure, has high resistance to moisture and the passage of electrical current. This U-shaped clamp is used in cabling projects and electrical conduit connections to stabilize and fix various types of pipes in place on ceilings and walls, and it has high resistance to weather conditions and applied loads. Purchasing insulated clevis hangers from a reputable supplier such as Rafi requires gaining more information about them. In the continuation of this article, we will examine the details of this product more closely.
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The insulated clevis hanger is a special type of clamp used for installing and securing pipes and cables, and it has a coating made of insulating material such as plastic or rubber. This insulation prevents the clamp from direct metal contact with the pipe or cable and prevents the transfer of heat, moisture, or electricity. The insulated clevis hanger is typically used in electrical systems, piping, and industrial facilities to not only provide firm securing but also prevent damage, corrosion, and unwanted electrical contact.
Insulated clamps perform best in any location where specific weather conditions and chemicals are present. In fact, the main application of these clamps is for situations where ordinary clevis hangers cannot be used, in which case, with the presence of an insulating layer, the clamp’s resistance increases and installation limitations are minimized. The most important applications of insulated clevis hangers are as follows:
Securing and holding electrical cables in electrical panels
Preventing electric shock through clamp insulation
Installing metal and plastic pipes with protection against corrosion
Use in humid and industrial environments
Protecting cables and pipes in vibrating and high-stress spaces
Reducing the possibility of short circuits and electrical damage
Increasing the safety and durability of the building services system
Preventing direct metal contact with the pipe or cable
Suitable for sensitive and high-safety applications
The insulated clevis hanger has a higher price compared to the plain clamp; however, from the perspective of resistance and preventing short circuits, it demonstrates excellent performance. Insulated clamps offer higher electrical safety than plain clamps. In the table below, we compare plain and insulated clamps in more detail:
| Feature | Insulated clamp | Plain clamp |
| Coating and insulation | Has a plastic or rubber coating that prevents metal contact with the pipe or cable | Lacks insulation coating and there is direct metal contact with the pipe or cable |
| Electrical safety | Reduced risk of electric shock and short circuit due to insulation | Higher risk of electric shock and short circuit due to lack of insulation |
| Corrosion resistance | Better protection against corrosion and rust in humid and industrial environments | Greater possibility of rust due to direct metal contact with the environment |
| Application | Suitable for sensitive projects and electrical systems that require greater safety | General application in simpler projects with lower sensitivity |
| Price | Usually has a higher price due to additional insulation materials | Lower and more economical price |
| Durability and service life | Higher durability due to better protection against environmental factors | Shorter service life due to lack of sufficient protection |
Galvanized steel sheet is the most important material used for manufacturing these parts, and numerous advantages can be listed for it. Since these highly resistant and strong sheets have low thickness and are made of a high-carbon iron alloy, they have a suitable and controlled weight. Connecting parts are only used to stabilize electrical conduits and cables, so companies should not increase their thickness and thereby add to their weight, because in that case, the safety of the network would decrease.
The next advantage is the increased service life of the insulated clamp. This means that these parts have both mechanical resistance and chemical resistance. Therefore, when subjected to weight force, they neither suffer structural deterioration nor are destroyed by rust. Thus, they can remain completely intact in the network over a long period of time.
The resistant structure, material, and standard design of the insulated clevis hanger have made it possible to use it for strengthening and stabilizing electrical conduits. These clamps, with their rustproof material and suitable thickness, do not easily undergo deflection or deformation and can also have good resistance in high-stress industrial environments. Below, we examine the structural features of this clamp in more detail:
Primary alloy: Insulated clevis hangers are made of stainless steel or steel alloy so that they have high resistance to environmental and high-stress industrial conditions and do not undergo deformation, deflection, or breakage.
Geometric design: The geometric shape of insulated clevis hangers is U-shaped, providing all-around compatibility and support for various types of cables. At the lower end of this clamp, there is a crescent-shaped retaining lever that is adjustable with a screw. This geometric design offers full compatibility with electrical conduits.
Galvanization: Before being equipped with a polymer layer, insulated clevis hangers are deeply immersed in a molten zinc solution. The zinc creates a uniform and relatively thick coating on the clamp to prevent discoloration, rust, and chemical degradation.
Insulating layer: An insulating coating is applied to the surface of the clevis hanger after galvanization, which is usually made of black-colored polymer. The thickness of the insulating layer is not high and can create a uniform coating on the clamp for greater resistance.
Mounting point on C-channel: At the base and lower end of clevis hangers, there is a claw-like and toothed structure so that it can easily lock onto the C-channel rail and have proper performance after installation.
If you intend to purchase insulated clevis hangers, you must take into consideration that these parts are mounted onto C-channels or clevis hanger rails. In fact, you cannot directly attach clevis hangers to the structure because you need a complementary part through which you can place the clamps and provide the conditions for supporting the cables. C-channels are parts that are directly installed on wall and ceiling surfaces and, due to their long, sectional design, have the ability to accommodate several insulated clevis hangers.
In other words, you can place a high number of these clamps along the axis of the C-channel. As a result, it is possible to support and hold several electrical conduits and cables in a single path line. The installation and connection of C-channels to the structure is extremely important. These parts bear the main load of the electrical conduits and cables, and any looseness in the connection of the C-channel to the structure endangers the safety of the cabling network. For this reason, selecting a reputable clevis rail manufacturer that can meet the necessary standards in terms of load-bearing capacity and alloy quality will have a direct impact on the durability and safety of the entire project.
Due to the movable screw present in the insulated clamp, they have the ability to support a specific size range of electrical cables and conduits. For this reason, the size chart provided for this clamp covers a specific range. This size range is generally called the grip diameter. As you know, electrical conduits and cables vary in terms of diameter. Naturally, the installation and connection of thick cables and conduits in a structure requires clamps of appropriate, fully compatible, and coordinated size.
You cannot put cables under pressure by using small clamps, because the result would be structural damage to the outer sheath of the cable. The same applies exactly to electrical conduits. The grip diameter of the insulated clevis hanger starts from 8 to 12 millimeters and continues up to a maximum of 44 to 48 millimeters. This sizing is presented in list form in the clevis hanger article, which you can read for more information.
Due to the extensive production of these clamps within the country, they usually have a competitive price. For this reason, these parts are offered to customers at an affordable purchase price. What causes fluctuations in the final price of the insulated clamp is related to changes in their size. Naturally, clevis hangers that have a larger size are more expensive than smaller-sized types.
Parts such as plain and insulated clevis hangers, Spit clamps, C-channel rails, two-piece clamps, couplings, pull elbows, pull tees, and various types of conduit bodies are manufactured and provided to customers at Rafi Industrial Group.
Each of these fittings has a very high manufacturing quality and is designed and built according to defined international standards. What matters to our company is complete customer satisfaction. If you need alternatives to clevis hangers for wall installation, reading the Spit clamp buying guide can help you make a more precise choice. You can contact our experts to receive precise pricing information about the products as well as to learn about the purchasing process.
