How are tubing fittings measured?
Tubing is generally measured by the OD Outside Diameter because it is used with push-to-connect fittings. Polyurethane (in general), nylon, and polyethylene tubing all commonly use a push to connect fitting. Softer tubes that use barbed fittings or compression fittings are measured by ID Inside Diameter.
How do I choose a tube fitting?
Selecting Your Fittings
- Consider the Tubing Used. Barbed fittings work best with flexible tubing such as silicone or PharMed®.
- Determine Material Compatibility. Fluids that are incompatible with fitting material may cause leakage or system damage.
- Check Temperature and Pressure Conditions.
What size is 10 an fitting?
Plumbing Basics – AN Fittings & Hoses
| AN Size | Hose i.d. – Tube o.d. | SAE Thread Size |
|---|---|---|
| -8 | 1/2 in. | 3/4 in.-16 |
| -10 | 5/8 in. | 7/8 in.-14 |
| -12 | 3/4 in. | 1 1/16 in.-12 |
| -16 | 1 in. | 1 5/16 in.-12 |
How do you measure the diameter of a tube?
To find it, measure around the circumference of the pipe with flexible measuring tape. Divide the circumference by pi, or about 3.14159. For example, if the circumference is 12.57 inches (319 mm), you would divide by pi, and get an outside diameter of about 4 inches (100 mm).
How do I choose a pipe size?
The equation for pipe diameter is the square root of 4 times the flow rate divided by pi times velocity. For example, given a flow rate of 1,000 inches per second and a velocity of 40 cubic inches per second, the diameter would be the square root of 1000 times 4 divided by 3.14 times 40 or 5.64 inches.
What are the three most important factors to consider when selecting tubing?
When selecting a tube or hose, the three main criteria are length, diameter, and material.
WHAT IS AN hose size?
Hose sizes are designated based on the inner diameter of the hose, which is the measurement of the straight distance between the two furthest points on the inner surface of the tube. Virtually all hoses made globally are made on inch sizes even if given a metric size designation.
What are an sizes?
The AN thread (also A-N) is a particular type of fitting used to connect flexible hoses and rigid metal tubing that carry fluid. AN sizes range from -2 (dash two) to -32 in irregular steps, with each step equating to the OD (outside diameter) of the tubing in 1⁄16-inch increments.