About Flare Fittings

Flare pipe fittings are a type of fitting commonly used in plumbing and gas systems to create a secure, leak-proof connection between pipes or tubing. They are specifically designed for connecting pipes that carry high-pressure fluids or gases, such as in automotive fuel lines, air conditioning systems, and natural gas lines.

Here are some key features and characteristics of flare pipe fittings:

  1. Flared End: The flare fitting consists of a pipe or tubing end that is flared outward at a specific angle, typically 45 degrees. This flare allows for a tight seal when connecting to another fitting.

  2. Flare Nut: The flare nut is a specialized nut that is used to secure the flare fitting to another fitting. It has a conical shape that matches the flare on the pipe end and is tightened onto the fitting to create a secure connection.

  3. Compression Sleeve: Also known as a ferrule, the compression sleeve is a small metal ring that is typically made of brass or copper. It is placed over the pipe or tubing before the flare is formed. When the flare nut is tightened, it compresses the sleeve against the flare, creating a tight seal.

  4. Double Flare vs. Single Flare: Flare fittings can have either a single flare or a double flare. Single flare fittings have a single flare at the end of the pipe, while double flare fittings have a second flare formed on the inside of the pipe, creating a more secure connection.

Flare pipe fittings provide several advantages, including:

  • Strong and reliable connection: The flared connection offers excellent resistance to leaks and ensures a secure joint, even under high-pressure conditions.

  • Easy installation: Flare fittings are relatively easy to assemble and disassemble, making them convenient for repairs or modifications.

  • Compatibility: Flare fittings can be used with a variety of pipe materials, including copper, steel, and aluminum.

  • Wide range of applications: They are commonly used in automotive, HVAC, and gas line installations where reliable connections are crucial.