Metallic vs Non-Metallic Conduits: A Comprehensive Guide

Flexible conduit is pipe or tubing used to protect and route electrical wiring in a structure. They can be various materials, including metal or plastic.

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There are two main types of conduit: metallic and non-metallic. Each has advantages and disadvantages to consider while choosing conduit for a particular application.

Metal conduit is usually made of aluminum or steel. It is strong and durable, making it ideal for applications requiring mechanical protection for wiring. However, metal conduit is more expensive than a non-metallic conduit and is subject to corrosion.

Non-metallic conduit is made of plastic, such as PVC or HDPE. Non-metallic conduit is less expensive than a metallic conduit and is not subject to corrosion. However, non-metallic conduit is not as strong or durable as metallic conduit and may not provide the same level of mechanical protection.

When choosing between metallic and non-metallic conduits, it is essential to consider the application&#;s specific needs. Cost, durability, flexibility, weight and temperature or corrosion resistance are important factors to consider. The right type of conduit will depend on the application&#;s particular requirements.

Now, let&#;s dive into the similarities between the two conduits.

Similarities among a metallic conduit and a non-metallic conduit

Metallic conduit and non-metallic conduit have these similarities:

• Both are composed of materials that are strong and durable, making them ideal for electrical wiring applications.
• Both types of conduit are designed to protect and route electrical wiring.
• Both metallic and non-metallic conduit are available in various common Trade sizes to accommodate different applications.
• Both are suitable for use in domestic, commercial, and industrial buildings and structures.
• Both protect against fire, mechanical damage and corrosion.
• Both may be rated for electrical safety applications according to the National Electrical Code (NEC).
• Both have adequate electrical field shielding and flexural stiffness (resistance to deformity).

Differences between metal conduits and non-metal conduits

Here are key differences between metal and non-metallic conduit to consider:

Non-metallic conduit

Here are some of the advantages of using non-metallic conduit:

• It can be used for fixture whips, data centers, electric signs and outdoor lighting, HVAC, pool and spas, and locations with exposure to sunlight and weather conditions.
• It is less expensive than most metal conduit.
• It is easy to cut at the site of installation.
• It is lighter weight than most metal conduit.
• It is more flexible than most metal conduit, making it easier to route through tight spaces.
• It may be installed in wet locations and buried in the ground or in concrete.
• It may be installed indoors, outdoors, under ground and above ground.
• PVC conduit may be recycled multiple times.

Here are some disadvantages in use of non-metallic conduit:

• It is not as resistant to crushing force, even though it may rebound from impact.
• Most non-metallic conduit is not rated for high or low temperature extremes
• It is not permitted in hazardous areas where the ambient temperature exceeds 50°C (122°F) or in applications where the conductor insulation temperature exceeds the rated temperature, such as extreme cold.
• It cannot be installed in plenum environments due its flammability and possibility for generating toxic smoke or fumes in a fire.
• It cannot be used without physical support along its installed length.

Metallic conduit

The following are the advantages of using metal conduits:

• Metal conduit is durable and can last many years with proper maintenance.
• Galvanized steel, aluminum, stainless steel, bronze and brass conduit is recyclable, making them a more sustainable option than other materials.
• It can withstand extreme temperatures and conditions, making it an ideal choice for protecting electrical wiring in harsh operating environments.
• It is resistant to impact and temperature changes, making it an ideal choice for protecting wiring in high-traffic areas or areas subject to extreme temperatures.
• It is made of non-combustible material, making it an excellent choice for protecting wiring for fire safety applications.
• It can be rated for electrical safety applications.
• A metallic conduit is easy to machine or fabricate, making it ideal for applications that require custom sizes or shapes.
• Extruded polymer jackets meet or exceed industrial chemical resistance requirements.
• Polymer jackets provide liquid tight protection allowing installation in wet conditions, or burial underground or in concrete.
• Polymer jackets provide low smoke or Halogen free protection of wiring.
• A integral bonding wire may be included in metal conduit, supporting NEC approved use in electrical connections.

However, using a metallic conduit also has some disadvantages, including:

• It costs more upfront to purchase the materials and install them.
• It does not offer full protection for circuits above and below ground against hazards, without a liquid tight jacket.
• It is heavier than a non-metallic conduit.

Flexible metallic & non-metallic conduits from Anamet Electrical

Key differences in these conduit types is material, durability and cost.

Metal conduit is more expensive than non-metallic conduit but it offers better protection from fire, pests, and extreme temperatures. They are also more durable and have a longer lifespan.

Non-metallic conduit is made of plastic or other material, less durable than metal. However, is it less expensive, lighter weight, more flexible and more corrosion resistant.

Anamet Electrical, Inc. has over 100 years of experience manufacturing quality flexible conduit for electrical wiring. Our liquid-tight metal and non-metallic conduit types are available for protecting mission-critical wiring from harsh operating conditions on land, at sea and in the air.

Our flexible metallic conduit and non-metallic conduit are available in various sizes and lengths. They can be custom-ordered to meet your specific needs.

If you&#;re looking for a high-quality, reliable, and durable conduit solution, look no further than Anamet Electrical. Contact us today to learn more information about our products and services.

2 Comments

1. John K. Boren

   May 14, at 9:39 pm

   Can flexible metal conduit (FMC) be used to facilitate a power drop in an industrial facility? Can it support its own weight, as it will be hanging from the rafters.

   • Jonathan Middleton

     May 17, at 4:53 pm

     We cannot recommend free hanging flexible conduit. We can&#;t know how much motion, strain or strain relief your application would cause or allow.
     Please see National Electrical Code Article 350.30 Securing and Supporting LFMC, with support required every 4-1/2 feet, no definition between vertical or horizontal.
     Check with your local code inspector for variance.

Brass is an alloy of zinc and copper. Standard plumbing fittings are brass with copper. Brass fittings are excellent for use with hot water in the home. This metal alloy is very malleable and can be bent, shaped, and molded. Also, brass can handle high temperatures and doesn&#;t change shape. Brass fittings are very good at transferring heat, which makes it possible for hot water distribution systems to work in a planned and efficient way.

Compared to other metals, it is easy to work with brass and costs less to install. If you don&#;t know the differences, it will be hard to tell what material your plumbing fixtures are made of.

Nowadays, the most common thing used to make pipe fittings is brass. There are many different kinds of brass pipe fittings, and they are in high demand because they have some qualities that make them better than other materials. Brass pipes and pipe fittings are often used in factories and homes to move water, flammable gases, slurries, chemicals, fire sprinkler systems, etc.

Brass pipe fittings come in an extensive range of shapes and thread sizes. These can connect, control, or change how air or liquid flows through a pipe or tube.

Plumberstar fittings

Brass pipe fittings are more acceptable because they are strong and last long. For this, they are used extensively in both industrial and home settings. The yellow color of brass gives it a unique look when used to make pipe fittings. Brass is a good material for pipe fittings because it is corrosion-resistant and can be plated, joined, polished, and finished well. Brass is an accessible material and can be made into different fittings.

Features of brass pipe fittings

Brass pipe fittings are precious because they have unique qualities that make them stand out. Here are some of these properties:

• Brass pipe fittings are known for being strong.
• These fittings are very flexible, even at high temperatures.
• They bend well enough when cold.
• Brass pipe fittings are good at moving electricity.
• They are very resistant to corrosion.
• Brass pipe fittings can take a lot of weight.
• They don&#;t let much magnetism through.

Brass fittings have been a staple in plumbing systems for many years due to their durability, corrosion resistance, and ability to provide a tight seal. For water lines, brass is ideal as it doesn&#;t impact the water quality and can withstand variable water pressures and temperatures. Let&#;s delve deeper into the world of brass fittings for water lines:

Why Use Brass for Water Lines?

• Corrosion Resistant: Brass does not rust, making it perfect for carrying water.
• Temperature Tolerant: Can withstand hot and cold temperatures without warping or degrading.
• Durable: Brass fittings last for a long time, offering great value for the cost.
• Lead-Free Options: Newer brass fittings are manufactured to be lead-free, ensuring the safety of drinking water.
• Versatility: Brass fittings are compatible with both copper and plastic piping.

Top 10 Brass Pipe Fittings we can use in plumbing

• Adapters
• Coupling
• Elbow
• Nipples
• Tee
• Bushing
• Union
• Locknut
• Reducer
• Sleeve

We can categorize these as follows:

1. Adapters: An adapter does precisely what its name implies: it adapts. These fittings allow users to change from one type of connection to another, ensuring compatibility between different pipe sizes or materials.
2. Coupling: Connecting two pipes of the same diameter is the primary purpose of couplings. They come in two forms &#; straight coupling and reducing coupling, the latter connecting pipes of varying sizes.
3. Elbow: When your plumbing system needs a change in direction, elbows come into the spotlight. They are primarily available in two angles &#; 45° and 90°, serving the purpose of either a slight detour or a complete right-angle turn.
4. Nipples: These are short, stubby pieces used to connect two other fittings. Their lengths vary, but they&#;re most commonly recognized for their shortness, especially the &#;close nipple.&#;
5. Tee: As the shape suggests, a tee fitting allows flow distribution in two directions. It&#;s essentially a three-way piece, with one inlet and two outlets or vice-versa.
6. Bushing: This fitting is essential when connecting two pipes of different sizes. A bushing will usually fit inside another fitting and help ensure a smooth, consistent flow.
7. Union: Think of unions as enhanced couplings. They connect two pipes, but they&#;re designed to be easily disconnected and reconnected without any cutting.
8. Locknut: Often used to secure other fittings in place, the locknut is threaded internally. It&#;s a necessary component to ensure stability in many plumbing scenarios.
9. Reducer: A reducer fitting is used when there&#;s a need to transition from a larger diameter pipe to a smaller one. It ensures a smooth flow despite the change in pipe size.
10. Sleeve: In the plumbing world, a sleeve is used to join two pipes through compression. The pipes are fitted into the sleeve, which is then tightened to create a solid, leak-proof connection.

Brass fittings are the unsung heroes in many plumbing systems, offering durability, versatility, and reliable performance. Understanding each type&#;s unique function ensures a smoother installation process and efficient system operations. When in doubt, always seek the expertise of a seasoned plumber.

Fittings that extend or terminate pipe runs:

• Couplings
• Adapters
• Caps and Plugs

Pipe fittings brass

Fittings that change a pipe&#;s direction:

• Elbows

Fittings that Connect two or more pipes:

• Reducers
• Bushings
• Flex couplings
• Fitting reducers
• Adapters

An elbow helps connect two pipes and makes it possible to change where the pipes go. The angle of the elbow can be 45 or 90 degrees.

Are you interested in learning more about Metallic Fittings AS? Contact us today to secure an expert consultation!

Union is used to disconnect pipes so they can be fixed, maintained, or replaced.

The reducer helps connect two pipes with different widths.

Tee is the most common pipe fitting, and it keeps the flow of water or any other liquid steady.

Coupling connects two pipes and comes in different sizes and lengths. Hex-reducing couplings and female couplings are two common types of couplings.

Cross-type has a four-way and cross-branch connection, where the first cross is for the inlet, and the other three are for the outlets.

Cap and plug type is used to move liquids and gases. The pipe with the male thread is connected to the cap, while the line with the female thread is connected to the plug. Most of the time, the special industrial caps are round.

The snout is from chlorinated polyvinyl chloride in this type. Copper is also used to make them. This short piece of pipe can connect two fittings to create a joint. It is used a lot in plumbing.

DZR coupling

Pipe Fittings Applications

Fittings for pipes go with pipes. Like pipes, pipe fittings are used in many ways in homes, businesses, and public places. Without the right fittings and flanges, we can not use pipes together. Pipe fittings allow setting up pipes, connecting them where needed, and ending them properly.

There are a lot of pipe fittings with different shapes, sizes, and materials. With the fast changes in industrial fittings and the constant research in this field, many new products exist. Fittings include a wide range of products used for different purposes.

As long as there are still uses for pipes, pipe fittings will always be used. Even though the piping usage keeps growing, its strength, flexibility, reasonable flow rates, and high chemical resistance make it perfect for moving liquids, steam, solids, and air from one place to another. With pipes, we can utilize pipe fittings in many other ways, such as:

• The moving of hazardous things, like chemicals and trash.
• High pressures won&#;t damage sensitive equipment.
• Protection against corrosion and different bad weather.
• Resistance to chemicals found in homes and factories.

brass pipe fittings

Usage of Brass Pipe Fittings in below Industries:

• Chemical / Petrochemical
• Municipal
• Food, Beverage, and Dairy
• Oil and Gas
• Power
• Process Instrumentation
• Pulp and Paper
• Semiconductor
• Marine & dredging
• Sanitation
• Irrigation
• Residential
• Road & highway construction
• Ventilation etc.

Pipe Fitting Selection

Pipe fittings come in many different sizes, shapes, and materials. These pipe fittings and flanges should make the right connections between pipes of various lengths and sizes. There are different kinds of materials to make pipe and pipe fittings, which can move a wide range of solids and liquids. The wrong pipe fittings can cause problems, such as leaks, unwanted flow restrictions, and extra costs.

Your equipment can work with the right pipe fittings and flanges. There are a lot of pipe fittings, such as adapters, bulkhead fittings, plugs, rigid couplings, flexible couplings, 90-degree elbows, 45-degree elbows, reducing elbows, flanges, nipples, concentric reducers, eccentric reducers, side outlet tees, standard tees, reducing tees, bullhead tees, unions, standard wyes, reducing You should choose the suitable fitting for your needs from the many types and sizes available.

• Consider the Tubing Used: For example, barbed fittings work best with flexible Tubing, while compression fittings work best with rigid Tubing. 
• Determine Material Compatibility: Choosing a suitable material is vital to how well fittings work. Some fluids don&#;t work well with certain fitting materials, and these fittings can cause leaks or damage to the system. It is essential to check if your fluid is compatible with any chemicals.
• Check Temperature and Pressure Conditions: For things to work right, they need to have the right temperature and pressure ratings. It is essential to know if the fittings can work at their maximum temperature and maximum pressure ratings because most fittings can&#;t do both tasks simultaneously.

Pipe fitting

Adapters

• Sizes: Common sizes range from 1/4&#; to 2&#;.
• Raw Materials: Typically made of forged brass.
• Specifications: Female-to-male adapters, pressure ratings often up to psi depending on the design.

Coupling

• Sizes: Available in 1/8&#; to 3&#;.
• Raw Materials: Made of either forged or extruded brass.
• Specifications: Can handle temperatures up to 400°F and pressures up to psi.

Elbow

• Sizes 1/8&#; to 2&#; are the most common.
• Raw Materials: Usually made of cast or forged brass.
• Specifications: 45° and 90° angles, rated for pressures up to psi.

Nipples

• Sizes: Range from 1/8&#; to 3&#;.
• Raw Materials: Often made of machined brass.
• Specifications: Close nipples, long nipples; temperature range up to 450°F and pressure up to 800 psi.

Tee

• Sizes: Common sizes include 1/4&#; to 3&#;.
• Raw Materials: Made of cast or forged brass.
• Specifications: Allow for 90° offset connections, high-pressure and temperature-resistant.

Bushing

• Sizes: Ranges from 1/4&#; to 2&#;.
• Raw Materials: Usually made of cast or forged brass.
• Specifications: Inside and outside threads, pressure ratings up to psi.

Union

• Sizes: Generally available in 1/4&#; to 4&#;.
• Raw Materials: Typically made of forged brass.
• Specifications: Designed for easy disconnection, pressure ratings can go up to psi.

Locknut

• Sizes: Range from 1/8&#; to 3&#;.
• Raw Materials: Usually made of cast brass.
• Specifications: Internal threads are used to lock fittings into place.

Reducer

• Sizes: Available in sizes from 1/8&#; up to 4&#;.
• Raw Materials: Typically made of cast or forged brass.
• Specifications: Used to transition between pipe sizes, can handle pressures up to psi.

Sleeve

• Sizes: Common sizes range from 1/4&#; to 2&#;.
• Raw Materials: Usually made of machined brass.
• Specifications: Compression sleeves, high temperature, and pressure resistance.

The brass used for these fittings often meets specific standards like ASTM, ANSI, or NSF. Always remember to check for compatibility with your existing system before making a purchase.

Standard Pipe Thread Sizes:

It is a significant thing to think about when putting together a pipe. All pipes have a standard outside diameter (OD) and wall thickness, meaning that the nominal pipe size is roughly the same as the inside diameter (ID). There are different ways to set up threads these days. Below is an example of a British Standard Pipe (BSP) fitting that connects systems that use NPT and BSP thread configurations. In the table, you can see how these two types of thread compare.

Size | Threads per inch (NPT) | Threads per inch (BSP)

SizeNPT Threads per inchBSP Threads per inch1/8&#;/4&#;/8&#;/2&#;/4&#;&#;11.511Thread Size Chart

Differences between BSP thread and BSP thread for the pipe fittings

When it comes to pipe fittings, the type of threading used can make a significant difference in the quality of the seal and the application&#;s overall functionality. Two of the most commonly used types of threading are NPT (National Pipe Thread) and BSP (British Standard Pipe). Here are some key differences between the two:

Angle of Thread

• NPT: Has a 60-degree thread angle.
• BSP: Has a 55-degree thread angle.

Sealing Method

• NPT: Forms a seal through thread deformation&#;when tightened, the male and female threads compress and form a tight seal.
• BSP: Typically, BSP threads may be either &#;tapered&#; for sealing or &#;parallel.&#; For parallel BSP threads, a bonded seal or washer is often used to provide the seal.

Threads per Inch (TPI)

• NPT: The number of threads per inch can vary significantly depending on the pipe size.
• BSP: Tends to have a standard number of threads per inch irrespective of the pipe&#;s diameter, although there are exceptions.

Thread Pitch

• NPT: Identified with a national coarse (UNC) or national fine (UNF) thread.
• BSP: Identified either as BSPP (British Standard Parallel Pipe) or BSPT (British Standard Taper Pipe).

Common Usage

• NPT: Predominantly used in the United States and other countries that have adopted the imperial system.
• BSP: Widely used in the United Kingdom and other countries that have adopted the metric system.

Interchangeability

• NPT: Generally not compatible with BSP threads without an adapter.
• BSP: Similarly, it is not compatible with NPT threads without an adapter.

Applications

• NPT: Commonly used in industrial applications, gas, steam, and residential plumbing.
• BSP: More prevalent in water and pneumatic applications and residential plumbing in regions that use the metric system.

Understanding the differences between these two threading types is crucial when selecting pipe fittings for specific applications to ensure a secure and reliable connection.

Pipe fittings come in vast materials, each suited for specific applications and purposes. Here are some common materials used in the manufacturing of pipe fittings:

Raw Materials for Pipe Fittings

1. Steel & Stainless Steel:
   • Carbon Steel: Widely used because of its durability and can withstand high pressure. It&#;s often used in industrial and commercial applications.
   • Stainless Steel: Known for its corrosion resistance. It&#;s frequently used in water and chemical processing applications.
2. Iron:
   • Cast Iron: Predominantly used in drainage systems because of its durability and ability to withstand heavy weights.
   • Ductile Iron: Offers more strength and shock resistance compared to cast iron. They are used in many industrial applications, especially for water distribution.
3. Copper:
   • Widely used in plumbing systems. It&#;s corrosion-resistant, has antimicrobial properties, and ensures a tight and secure fit.
4. Brass:
   • Commonly used for compression fittings and threaded fittings. Brass fittings are durable and provide a tight seal.
5. Aluminum:
   • Lightweight and resistant to corrosion. It&#;s often used in pneumatic systems and some specialty fluid applications.
6. PVC (Polyvinyl Chloride):
   • Commonly used in plumbing, drainage, and irrigation systems. It&#;s lightweight, corrosion-resistant, and cost-effective.
7. CPVC (Chlorinated Polyvinyl Chloride):
   • It can handle higher temperatures than PVC. It&#;s often used for hot water delivery.
8. PE (Polyethylene):
   • Common in gas distribution systems and some water applications. It&#;s flexible and can be used for long, underground pipeline systems without many joints.
9. PP (Polypropylene):
   • It is known for its resistance to chemicals and high temperatures, making it suitable for hot and cold water applications and specific chemical drainage systems.
10. PB (Polybutylene):
    • It was commonly used for residential water systems from the s to the s. Its use decreased due to concerns over durability.
11. ABS (Acrylonitrile Butadiene Styrene):
    • Often utilized in drainage, waste, and venting systems.
12. PTFE (Polytetrafluoroethylene):
    • Known by the brand name Teflon, it&#;s resistant to high temperatures and chemicals. Often used for seals and gaskets.
13. Rubber:
    • Often used for flexible joints, seals, and gaskets.
14. Fiberglass:
    • Used in applications where corrosion resistance is essential. Suitable for transporting aggressive chemicals.
15. Ceramics:
    • Used in specialized applications, especially where wear resistance from flow is a concern.

The material selected for a particular pipe fitting will be influenced by factors such as the type of fluid being transported, temperature, pressure, and specific requirements like corrosion resistance or flexibility.

Pipe fittings connector cast iron

Why are these Brass Pipe Fittings popular?

Pipe fittings fixture fittings include hose bibcocks, backflow preventers, valves, and pressure control devices. Brass is a durable metal often used for pneumatic and fixture fittings because it can easily be machined into parts with precise details.

Polished brass fixtures and fittings have a unique golden color that can sometimes be darker and browner. Ask the builder to use genuine brass fittings because some non-brass fittings are coated with a similar paint to make them look like brass. When you use these fittings, you can&#;t expect them to last long because they aren&#;t from brass.

Brass is a rare and sophisticated metal used to make many things besides pipe fittings, like tools, antiques, statues, scenes, etc. Pipe fixtures used by builders are made of aluminum, steel, and brass, among other things.

Most brass pipe fittings are expensive but well worth the money. Because of this, most builders worldwide tell their clients to use brass pipe fittings and fixtures to ensure they work well for years. Solid brass plumbing and pneumatic fittings last a long time, look great, and usually do a better job. These are the reasons why brass products sell so quickly.

5 Benefits of Brass Plumbing Fittings

There are many different kinds of plumbing fittings on the market today. Brass is just one of them. Copper and zinc form together to make brass. When choosing the plumbing fittings, you should give them some thought. A good choice will not only improve how well your water system works, but it will also raise the value of your home. You might be wondering if brass is a good choice for plumbing fittings. You might want to consider five good things about brass fittings.

1. Durable

Brass is a material that lasts a long time. Selecting brass is a good choice for plumbing jobs requiring a strong, long-lasting material. Brass fittings will stay in good shape for many years and won&#;t break or fall apart quickly. Brass fittings last longer than other metals when they get hot water in different places. Brass fittings add to the value of a home because they are solid and last a long time.

2. Be able to withstand hot temperatures

Brass fittings are the best ones for distributing hot water in a home. Brass fittings have good conductivity, improving the house&#;s hot water system. They are well-known for how bendable they are, even when hot. Brass fittings can handle scorching temperatures. Brass fittings won&#;t catch fire. When a house burns down, they are often one of the few things that can be saved.

Bronze Pipe fitting types

3. Versatile

Brass fittings are better than metal fittings because we can use them for many things. Brass fittings come in all sorts of sizes, shapes, and widths. Pipes can also be made a different size by using the fittings. Installing plumbing according to precise instructions is easier, dramatically affecting how well the house&#;s water system works. There are also different ways to finish brass fittings, which are helpful in homes where plumbing fittings sometimes need to be exposed. Different decorative finishes make plumbing fittings look nice when they are on display. Brass fittings can be chrome-plated, have an antique or nickel finish, lacquered or polished.

4. Malleability

Brass fittings are more accessible to shape than those made of iron or steel. Brass fittings are easier to bend, shape, or mold than those made from most other metals. It makes it easier to do work on the plumbing. The ease of installation keeps installation costs low. Brass fittings are also easier to keep up with because the material is flexible. The fact that brass fittings are loose doesn&#;t make them less durable.

5. Corrosive Resistant

Brass has the most considerable resistance to corrosion among metal fittings. Brass fittings don&#;t rust, which is excellent for people who live where the water is very corrosive. Fittings made of brass don&#;t rust. Since corrosion and rust are two main things that cause metal fittings to wear out, brass fittings are the best way to stop erosion.

If you want to learn more, please visit our website Liquid Tight Flexible Metal Conduit-US.