Choosing the Best 3/8 Flare Fittings

Flare x Copper Tube Compression Adapter Guide

The Flare x Copper Tube Compression Adapter is really a versatile plumbing factor that allows for secure and reliable connections in a variety of plumbing projects. It was created to join flare fittings and copper tubing, providing a leak-proof seal and ensuring the proper flow of liquids and gases. The following information can provide an introduction to the features, specifications, and applications of the 3/8 flare fitting.

Understanding Flare Fittings

Flare fittings are necessary components in plumbing systems which allow secure connections between pipes and tubing. These fittings come with a 45° flare on one end, which allows for a tight and reliable connection with all the corresponding flare on the tubing. Flare fittings are widely used in various applications due to their capability to resist vibration and mechanical pull-out.

One everyday sort of flare fitting is the SAE 45° flare, which follows the specifications set from the Society of Automotive Engineers. These fittings use a 45° flare angle and therefore are widely used in automotive and hydraulic systems. They fulfill the functional requirements of SAE J512 and J513, ensuring their reliability and compatibility in these applications.

Along with the SAE 45° flare, another type of flare fitting will be the inverted flare. This fitting comes with a cone-shaped flare on the fitting end, providing a good connection using the corresponding inverted flare on the tubing. Inverted flare fittings are a cost-effective option and commonly used in automotive brake and fuel systems.

Advantages of Flare Fittings

Flare fittings offer several positive aspects which make them a well known choice in plumbing systems:

  • Effectiveness against vibration: The 45° flare design of these fittings enables them to withstand vibrations, ensuring the integrity in the connection even in dynamic environments.
  • Mechanical pull-out resistance: Flare fittings give a secure connection that resists pulling forces, preventing accidental disconnection.
  • Wide range of applications: Flare fittings are versatile and may be used in a variety of plumbing systems, including automotive, hydraulic, and gas applications.
  • UL Listed: Many flare fittings are UL Listed, meaning they have been tested and certified by Underwriters Laboratories, a reliable safety organization.

Samples of Flare Fittings

Here are some types of flare fittings:

Fitting Type Description
Straight Flare A straight fitting with 45° flare angles for both ends, utilized for connecting two flare fittings or a flare fitting and tubing.
Union Flare A fitting with two flare ends joined by way of a union, permitting easy disconnection and reconnection of pipes or tubing.
Elbow Flare An angled fitting using a flare end, employed for making 90° or 45° bends in plumbing systems.

These are just a few examples of the numerous kinds of flare fittings available, each created for specific applications and installation requirements.

In summary, flare fittings are crucial components in plumbing systems because of their secure connections, effectiveness against vibration, and wide variety of applications. Whether it’s the SAE 45° flare or the inverted flare, these fittings provide reliable and leak-free connections, causing them to be a preferred choice in different plumbing projects.

Flare to Compression Adapter Options

The Flare x Copper Tube Compression Adapter offers a range of options to match different plumbing needs. These options include:

  1. Flare to male NPT
  2. Flare to flare
  3. Flare to female NPT
  4. Flare to metric

One notable feature of those adapters is the steel nut option, which provides additional durability and strength. This ensures a secure and reliable connection, even in demanding plumbing applications.

Furthermore, some kinds of the Flare x Copper Tube Compression Adapter are equipped with a Teflon seal on the valve core. This seal improves the leak-proof capabilities of the adapter, offering you satisfaction and confidence in their performance.

It’s also worth mentioning that these adapters are machined to ARI Standards, guaranteeing precision and quality within their construction. This ensures compatibility with industry standards and enables seamless integration with existing plumbing systems.

Lastly, the finger-tight quick seal cap is a crucial feature from the Flare x Copper Tube Compression Adapter. This cap provides for simple and quick installation without making use of additional tools. It ensures a strict and secure connection, further enhancing the reliability and performance from the adapter.

Flare to Compression Adapter Options

Adapter Type Features
Flare to male NPT Steel nut option, Teflon seal, machined to ARI Standards, finger-tight quick seal cap
Flare to flare Steel nut option, Teflon seal, machined to ARI Standards, finger-tight quick seal cap
Flare to female NPT Steel nut option, Teflon seal, machined to ARI Standards, finger-tight quick seal cap
Flare to metric Steel nut option, Teflon seal, machined to ARI Standards, finger-tight quick seal cap

In conclusion, the Flare x Copper Tube Compression Adapter offers a number of options to focus on different plumbing requirements. With features such as the steel nut option, Teflon seal, and machined to ARI Standards, these adapters provide secure, durable, and-performance connections. The finger-tight quick seal cap adds convenience to the installation process. Choose the Flare x Copper Tube Compression Adapter for reliable and leak-free plumbing connections.

Working Pressure Ranges and Temperature Ranges

The Flare x Copper Tube Compression Adapter provides reliable connections in plumbing projects, with working pressure ranges that vary dependant upon the temperature and tubing size. It is important to ensure that the temperature and tubing size are within the specified ranges to maintain the integrity of the connection. Here is an introduction to the working pressure ranges at 73°F:

Tubing Size Working Pressure Range (PSI)
1/8″ 2800
1/4″ 2000
3/8″ 1800
1/2″ 1600
5/8″ 1400
3/4″ 1200
7/8″ 450

The Flare x Copper Tube Compression Adapter even offers a broad temperature selection of -65°F to 250°F, making it suitable for various applications in plumbing projects.

Assembly Instructions for Flare Fittings

Proper assembly of flare fittings is essential to ensure a good and leak-proof connection. Follow these recommended assembly instructions to achieve optimal results:

  1. Inspect the flare fitting and also the tubing for just about any signs of damage or imperfections.

  2. Make sure that both flare fitting and the tubing are clean and free from dirt, debris, or any foreign substances.

  3. Using a tubing cutter, cut the tubing to the desired length ensuring a clean and square cut.

  4. Remove any burrs or sharp edges from your tubing utilizing a deburring tool or perhaps a file.

  5. Slide the flare nut on the tubing, then the cone-shaped flare sleeve.

  6. Carefully insert the tubing in to the fitting body until it reaches the base.

  7. Tighten the flare nut with a flare nut wrench or perhaps a suitable wrench, ensuring not to overtighten.

  8. Inspect the connection to make sure that the flare is properly formed as well as the tubing is securely located in place.

  9. Carry out a leakage test by pressurizing the device and checking for any warning signs of leaks.

  10. If no leaks are detected, the assembly is done and prepared to be used.

Following these assembly instructions can help you gain a reliable and sturdy connection with your flare fittings.

Step Assembly Instructions for Flare Fittings
1 Inspect the flare fitting as well as the tubing for virtually any warning signs of damage or imperfections.
2 Make certain that both flare fitting and the tubing are clean and free from dirt, debris, or any foreign substances.
3 Employing a tubing cutter, cut the tubing to the desired length ensuring a neat and square cut.
4 Remove any burrs or sharp edges through the tubing utilizing a deburring tool or perhaps a file.
5 Slide the flare nut onto the tubing, followed by the cone-shaped flare sleeve.
6 Carefully insert the tubing into the fitting body until it reaches the bottom.
7 Tighten the flare nut with a flare nut wrench or a suitable wrench, ensuring to not overtighten.
8 Inspect the connection to ensure that the flare is correctly formed and the tubing is securely held in place.
9 Conduct a leakage test by pressurizing the program and checking for any signs of leaks.
10 If no leaks are detected, the assembly is finished and ready to be used.

Sizing and Nomenclature of Flare Fittings

Flare fittings play a crucial role in plumbing projects, and understanding their sizing and nomenclature is vital for choosing the proper fitting for your needs. Flare fittings are sized depending on the quantities of sixteenths of the inch in the tube outer diameter (O.D.). Let’s break up the sizing and nomenclature to simplify your selection process.


The initial series of numbers and letters in the part number identify the design and type from the flare fitting. The second series of numbers represents the dimensions, using sixteenths of your inch. For instance, a part number like 1 49 F – 6 – 4 indicates a forging style, a 3/8″ (6/16) tube O.D. size, and a 1/4″ (4/16) pipe size.


The nomenclature of flare fittings really helps to identify the particular characteristics and dimensions of each fitting. Comprehending the codes used in the part number ensures accurate selection and seamless ordering. Here’s a summary:

Nomenclature Description
Style and Type Identifies the specific style and type of flare fitting
Tube O.D. Size Represents the size of the outer diameter in the tube, indicated in sixteenths of the inch
Pipe Size Indicates the dimensions of the pipe for which the flare fitting is made, also measured in sixteenths of the inch

By familiarizing yourself with all the sizing and nomenclature of flare fittings, it is possible to confidently choose the best fitting for the plumbing project and make certain a secure and reliable connection.

Advantages and Applications of Flare Fittings

Flare fittings are commonly used in plumbing projects due to their numerous advantages and versatile applications. These fittings offer several benefits that will make them an ideal choice for professionals in the industry.

Advantages of Flare Fittings:

  • Effectiveness against Mechanical Pull-Out: Flare fittings are designed to resist mechanical pull-out, ensuring a good and reliable connection. This will make them perfect for applications where vibration or movement may occur.
  • Repeated Assembly and Disassembly: Flare fittings can easily be assembled and disassembled multiple times without compromising integrity. This flexibility allows for easy adjustments, repairs, or modifications without the need for replacement.
  • High-Quality Brass Materials: Flare fittings are manufactured from high-quality brass materials, guaranteeing durability and longevity. Brass is recognized for its corrosion resistance, making these fittings appropriate for various plumbing applications.

Uses of Flare Fittings:

“Flare fittings are popular in a range of plumbing applications, due to their reliability and leak-proof characteristics.”

Below are a few common applications where flare fittings are widely employed:

  1. Flammable Liquid Applications: Flare fittings are listed with Underwriter’s Laboratories for flammable liquid applications, making them a safe and trusted option for projects concerning the transportation or distribution of flammable substances.
  2. Marine Applications: Because of the effectiveness against mechanical pull-out and corrosion resistance, flare fittings are widely used in marine plumbing systems, ensuring reliable connections in harsh saltwater environments.
  3. Refrigeration Applications: Flare fittings play an important role in refrigeration systems, providing leak-proof connections for refrigerant lines, ensuring optimal performance and efficiency.
  4. Gas Applications: Flare fittings are also extensively found in gas plumbing systems, offering reliable and secure connections for the distribution of gases, like natural gas or propane.
  5. Hydraulic Tubing Applications: Flare fittings are compatible with use with assorted materials, including copper, brass, aluminum, and welded steel hydraulic tubing. Their versatility enables them to be utilized in diverse hydraulic systems.
  6. Hard-to-Hold Liquids and Gases: Flare fittings are specially designed for hard-to-hold liquids and gases, providing a trusted and leak-proof connection in challenging applications where containment is crucial.

To summarize, flare fittings offer multiple advantages, including potential to deal with mechanical pull-out, ease of assembly and disassembly, and utilize of high-quality brass materials. These fittings find widespread applications in flammable liquid, marine, refrigeration, gas, hydraulic, and challenging liquid and gas plumbing systems. Their versatility, reliability, and leak-proof connections make them a necessary component for a number of plumbing projects.

Advantages Applications
Effectiveness against mechanical pull-out Flammable liquid applications
Repeated assembly and disassembly Marine applications
Produced from high-quality brass materials Refrigeration applications
Gas applications
Hydraulic tubing applications
Hard-to-hold liquids and gases

Additional Options and Pricing

Along with the standard configurations, flare fittings offer a range of additional options to satisfy specific plumbing requirements. These options include:

  1. Bulkheads: Used for creating secure connections in confined spaces or through barriers.
  2. Auxiliary Fittings: Provide flexibility and adaptability in complex plumbing systems.
  3. Special Fittings: Customizable to meet unique project specifications.
  4. UL Stamped Fittings: Ensuring compliance with rigorous quality and safety standards.

When purchasing flare fittings, you should take into account the pricing of non-stock items and consult the price list supplied by the producer. For special configurations, it is recommended to submit a print or sketch to inquire about pricing and availability. Please be aware that prices and availability are subjected to change without prior notice, so it is best to keep an eye on the latest information.

Flare Fittings Pricing Comparison

Configuration Pricing
Standard Flare Fitting $5.99
Bulkhead Flare Fitting $8.99
Auxiliary Flare Fitting $6.99
Special Flare Fitting Custom Pricing

Note: The pricing shown is for illustrative purposes only and may vary dependant upon the manufacturer and distributor.

Streamline ACR Press System

The Streamline ACR Press Product is revolutionizing the plumbing industry with its cutting-edge technology and innovative design. Engineered to offer superior performance and reliability, this method incorporates the most recent advancements to provide exceptional results in flare fittings.

The standout feature in the Streamline ACR Press Product is its Two Ring Advanced Press (T.R.A.P.) Technology. This groundbreaking technology ensures a stronger and more secure seal by creating 200% more surface contact involving the fitting and the tubing. With T.R.A.P. Technology, you may have complete confidence within the integrity of your connections.

The DualSeal Ring Design in the ACR Press System further enhances its sealing capabilities. This design guarantees a solid and reliable seal, minimizing the potential risk of leaks and ensuring long-lasting performance. Additionally, the program includes the TrapZone Leak Barrier, an extra layer of protection which offers an added degree of security against potential leaks.

In terms of joint compression and sealing performance, the Streamline ACR Press System delivers exceptional results. The Force360 Press Contour technology ensures a more uniform compression, promoting a trusted and tight seal each and every time. Furthermore, the Tri-Lock Press Profile enhances joint strength, making the system highly durable and resistant against any mechanical stress.

Compatibility is key in terms of plumbing systems, as well as the Streamline ACR Press System excels in this region. It works with R410A as well as other commonly used refrigerant gases and oils, rendering it ideal for a wide range of applications. Whether you’re concentrating on commercial or residential projects, this technique was created to meet your particular needs.

As a testament to its quality and sturdiness, the Streamline ACR Press System features a 10-year limited warranty against defects in material and workmanship. This warranty offers satisfaction and helps to ensure that you’re buying a reliable and long-lasting solution to your plumbing needs.

To Conclude

The Flare x Copper Tube Compression Adapter is an important component for secure and reliable connections in plumbing projects. Its versatile options, easy assembly instructions, and industry-leading innovations ensure it is the best choice for plumbers and contractors alike.

Using the Flare x Copper Tube Compression Adapter, you are able to acquire a leak-proof seal and make sure the proper flow of liquids and gases. Whether you are focusing on residential or commercial plumbing projects, this adapter provides the durability and satisfaction necessary to get the job done right.

By including the Flare x Copper Tube Compression Adapter to your plumbing projects, you can have satisfaction knowing that your connections are secure and reliable. Say goodbye to leaks and inefficient flow, and hello to a plumbing system that performs at its best.