What does ARO stand for in air fittings?

Asked By: Gifty Berrios | Last Updated: 12th April, 2020
Category: automotive auto parts
4.4/5 (879 Views . 15 Votes)
Semi-Universal Interchange Profile (ARO, Automotive, Industrial) not applicable. Three thin stripes on body of fitting.

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Then, what are the different types of air fittings?

Air Line Fittings Explained

  • Quick release couplings:
  • Schrader Coupling and Plug.
  • PCL Standard Airflow Coupling and Plug.
  • PCL Standard Vertex Coupling.
  • PCL Standard Safety Coupling.
  • PCL Twin Standard Y Coupling.
  • Uni Hi Flow Coupling and Plug.
  • Hose Tails.

Secondly, what is the difference between automotive and industrial air fittings? As you can see, Industrial style couplers have two striped going across the fitting, whereas the automotive style only has one. On the plug, the industrial style is slightly longer and different head than the automotive. Amflo also makes two Combo Couplers, one with a female end, and one with a male end.

Accordingly, what are pneumatic fittings?

Pneumatic fittings are parts used to connect sections of pipe, tube, and hose in pneumatic (pressurized gas) systems. Compared to hydraulic fittings, pneumatic fittings are typically characterized by tighter seals and lower pressure requirements.

Do air fittings need Teflon tape?

6 Answers. You are correct that it is a good idea to use teflon tape on the threaded fittings, however no sealant is required or advised on the quick-connect part itself. These are designed to seal using internal o-rings. The documentation for your air compressor may specify exactly which type of fitting you have.

32 Related Question Answers Found

What are the best air fittings?

11 Best Air Compressor Fittings
  • #1. Milton Coupler and Plug Kit.
  • #2. Campbell Hausfeld Compressor Kit.
  • #3. ColorFit Coupler and plug 14-piece Kit by Milton.
  • #4. WYNNsky Quick Connect Air Fittings.
  • #5. PowRyte Brass Air Fittings.
  • #6. PalNour 14 Piece Air Coupler and Plug Kit.
  • #7. PowRyte Elite 17-Piece Air Hose Fittings.
  • #8.

How do you determine your fitting size?

Measure the Outside Diameter (OD) of your pipe or pipe fitting:
  1. Wrap a string around the pipe.
  2. Mark the point where the string touches together.
  3. Use a ruler or measuring tape to find the length between the tip of the string and the mark you made (circumference)
  4. Divide the circumference by 3.14159.

How tight should air compressor fittings be?

Re: air compressor fittings - how tight
hand tight then snug them up lightly. If they leak take them back apart and re-do the tape.

What thread are air fittings?

Air Hose Fittings: The NPT Size Chart for Air Compressors
Pipe Size (Inches) Threads Per Inch Outside Pipe Diameter
1/4 18 .540
3/8 18 .675
1/2 14 .840
3/4 14 1.050

What does ARO mean in air fittings?


Semi-Universal Interchange Profile (ARO, Automotive, Industrial) not applicable. Three thin stripes on body of fitting.

How is pneumatic fitting size measured?

To find the correct fitting size, measure the outer diameter of the threads.
  1. For a male thread, measure the outer diameter (OD) of the thread.
  2. For a female thread, measure the top diameter of the opening (OD).

What is an air fitting?

Pneumatic fittings provide the essential link between tubes, hoses and other components in a pneumatic system. Air fittings feature tighter seals and have lower pressure requirements than hydraulic fittings and are typically offered in various connector types.

Does air hose size matter?

An air hose size is designated by the inside diameter of the hose, even though the outside may look the same. The most common sizes are 1/4 and 3/8 inch inside diameters. A tool that uses a lot of compressed air volume will need a 3/8-inch hose. A 50-foot 3/8-inch hose should cost from $10 to $20.

How do I know what air hose fittings I have?

To determine the size of pipe fitting thread you need, first use a tape measure or scale to measure the inside diameter (ID) of the threaded hole were you would like to install the fitting or the outside diameter (OD) of your existing fitting as shown below.

Can pneumatic fittings be used for water?


These couplers and plugs have a smooth, straight-through bore (NO valves) to permit maximum flow. They are commonly used for hot water supply lines for carpet cleaners and for pressure washers. These are used to adapt standard pressure washer hoses to Karcher style equipment.

What is the difference between 1 4 and 3/8 air hose?

Inside Diameter
The most common inside diameters are 1/4- and 3/8-inch. Many people choose 1/4-inch hose because it's lighter than the 3/8-inch variety. It's easier to roll up, carry around and store. Of course, it doesn't hurt that the price tag for 1/4-inch hose is lower than its 3/8-inch counterpart.

Are air compressor hoses Universal?

air compressor. While there are some differences in air hose size, for the most part they are universal. As long as the quick connect fittings are the same, you can pretty much use them with any compressor.

What type of air hose is best?

Which air hose is the best for me?
  • Rubber – heavy (doesn't kink), easy to roll up, flexible, good in varying temperatures, fairly high cost.
  • PVC – cheap and light, it does tend to kink but not to a great deal.
  • Polyurethane – made to be a lighter and easier to use version of rubber, but kinks a lot and is expensive.

Can you connect two air hoses together?

Adding another air hose and installing the fittings the same way will allow you to connect the two air hoses together. One air hose plugging into the tank or compressor then on the other end the two hoses will also connect together end to end doubling the total length.