Inverted flare fittings, also known as inverse flare fittings, are a common type of connection used in hydraulic and pneumatic systems, as well as in various automotive applications. Understanding which fitting mates with an inverted flare thread is crucial for ensuring a leak-free and secure connection. This article will explore the specifics of inverted flare fittings and provide a comprehensive answer to this question.
What is an Inverted Flare Fitting?
An inverted flare fitting features a tube end that is flared outwards, creating a bell shape. This flared end then mates with a corresponding fitting that has an internal tapered seat. This design differs from a standard flare fitting, where the tube is flared inwards. The outward flare is what distinguishes the inverted flare and is key to understanding compatible fittings.
What Fitting Mates with an Inverted Flare Thread?
An inverted flare fitting mates with a male inverted flare fitting. This is crucial. Trying to connect it to a standard flare fitting will result in a damaged connection, leaks, and potential system failure. The male fitting has a corresponding internal tapered seat that precisely grips the outward flare of the tube.
How to Identify an Inverted Flare Fitting
Identifying an inverted flare fitting requires careful examination. Look for the following characteristics:
- Outward Flare: The most obvious feature is the outward flare at the end of the tube.
- Thread Type: While the flare itself is the defining feature, the threads will also be specific to the inverted flare standard. Look for markings on the fitting to confirm.
- Size and Material: Note the size (measured in inches or millimeters) and the material of the fitting (typically steel, brass, or stainless steel). This information will be crucial when sourcing a replacement or compatible fitting.
What are the Advantages of Inverted Flare Fittings?
Inverted flare fittings offer several advantages:
- Stronger Seal: The outward flare creates a stronger seal compared to other fitting types.
- Vibration Resistance: The design offers better resistance to vibrations, reducing the risk of leaks.
- Relatively Easy Installation: Compared to some other types of fittings, these are relatively straightforward to install with the correct tooling.
How do I ensure a proper connection?
To ensure a proper and leak-free connection:
- Use the Correct Tooling: A specialized flaring tool is necessary to create the correct flare angle and size. Incorrect flaring will lead to leaks.
- Cleanliness is Key: Clean both the fitting and the tube thoroughly to remove any dirt, debris, or oil before connecting them.
- Proper Torque: Tighten the fitting to the manufacturer's specified torque. Over-tightening can damage the fitting.
- Visual Inspection: After installation, carefully inspect the connection for any signs of leaks.
What if I'm unsure about my fitting type?
If you're unsure about the type of fitting you have, it's best to consult a professional or refer to the original equipment manufacturer's (OEM) specifications. Attempting to use the wrong fitting can lead to significant problems, including system failure and potential safety hazards.
Other Types of Fittings and Their Compatibility
It's important to remember that inverted flare fittings are not compatible with other types of fittings, such as:
- Standard Flare Fittings: These have an inward flare, and will not fit properly.
- Compression Fittings: These rely on compression to create a seal.
- O-Ring Fittings: These use an O-ring to seal.
By carefully following these guidelines and identifying the specifics of your inverted flare fitting, you can ensure a proper and safe connection. Remember, when working with hydraulic or pneumatic systems, safety should always be the top priority.
