Table of Contents
There are two basic types of flares used on OEM automotive brake systems throughout the world. The SAE/double (inverted/45degree) flare and the DIN/ISO bubble flare. We will refer to them as SAE or DIN flare.
What type of fittings are used on brake lines?
Brake Line Fitting Groups: Banjo. Center Support Fitting (bracket) Male Fitting. Female Fitting. Other/Special Fitting.
Are brake lines single or double flare?
Double flares are necessary for brake lines due to the high pressures inflicted on them by the hydraulic system. Single flared lines are only appropriate for low-pressure lines due to their tendency to crack or leak.
What are the different types of tubing flares?
In the automotive industry there are four main types of tubing flares: 45-degree double flare, 45-degree single flare, 37-degree single flare, and the bubble flare. The most common type of flare you’ll find on domestic and street rod applications is a 45-degree double flare.
What is the difference between a bubble flare and a double flare?
Just like the double flare, the bubble flare may also be called something else such as DIN or ISO. When creating a bubble flare, you have one less step. When someone is making a double flare, they actually start out by making a bubble flare before that.
What are 37 degree flares used for?
37° flare fittings perform well in severe applications where vibration, high pressure, and thermal shock exist. The flare fitting sleeve insures tube alignment with the fitting body axis and minimizes mechanical strain on the tube.
Are brake lines 37 or 45 degree flares?
The 45-degree inverted flare is the most common style of flare used in automotive hard lines like brake, fuel, and transmission fluid transfer.
What flare are an fittings?
The U.S. Air Force, with help from Wright Patterson Air Force base, developed a fitting with 37° flare angle, before WWII, which became known as the “AN” fitting. This fitting had precision 3A/3B threads.
Is inverted flare the same as double flare?
The first is the inverted double flare, used by most domestic production cars and trucks. … It uses a 45* double flare to seal, which has tubing that is folded over into itself before flaring outward. The double flare is used for installations that require repeated tightening/untightening.
Do an fittings need double flare?
AN or Army-Navy fittings require 37-degree single flares. This 37-degree tool looks the same, but notice that it does not come with the dies. For AN fitting, you need a single 37-degree flare.
Is it OK to single flare brake line?
1. Single Flares are only acceptable on low-pressure lines, but not acceptable for high-pressure brake systems. A single flare is just as it sounds, the line is flared out just once in a conical shape. Single flares are not acceptable for brake lines and tend to crack and leak quite easily.
What is the difference between flare and compression fittings?
Generally speaking, compression outlets are used for water and compressed air lines, where slight leakage isn’t going to cause too much of a problem. Flared outlets are used for gas and high-pressure lines, where even a little leakage can cause major problems if left unattended.
What is an ISO flare?
ISO bubble flares are essentially the same components as plain bubble flares; the difference between the two types lies in the fact that ISO bubble flares have pipes and threads measured in metric sizes rather than in inches.
What is a single flare plug?
A single flare plug only has one side flared. The flared side is meant to be worn on the outer side of your stretched earlobe. It increases the plug size visually, making the gauge you are wearing look bigger than it actually is. The other end has no flare, making it easy to insert the plug.
Are all brake line fittings the same?
There are two basic sizes of brake lines. The smaller size is 3/16″/4.75mm brake line, CNF-3; and the larger size is 1/4″ CNF-4. 3/16″ is found on virtually all cars and trucks made in the world.
What are 45 degree flare fittings called?
SAE 45 degree fittings are a type of fare fittings machined with a 45 degree flare seating surface. SAE 45° flare connections are commonly used in automotive applications as well as military and oil gas industry. SAE fittings are typically made from steel and stainless steel.
ARE AN fittings 37 degree?
The majority of the hydraulic population agrees, the JIC (or SAE) 37 degree fittings are generally interchangeable with AN fittings.
What is a flaring tool used for?
What are Flaring Tools? Flaring tools use pressure to make a fabricated mechanical joint for joining or sealing copper tubing with a flare connection. Flaring allows you to connect tubes to each other or another kind of fitting. Flared ends tend to have an approximately conical shape.
What the difference between 37 and 45 degree flare?
JIC 37 degree flare union fittings is in most hydraulic systems in high pressure application such hydraulic excavator, loader and tractor etc. SAE 45 degree flare fittings is used in low to medium pressure applications such as military and aerospace equipment. they doesn’t interchangeable into each other.
Is a double flare 45 degree?
Standard 45 Degree Double Flaring Tool – For 3/16″, 1/4″, 5/16″, 3/8″, 1/2″ Tube. Designed for mild steel tube and fully annealed tubing. This tool provides smooth, uniform flares for automotive connections.
