## What are pipe thread sizes?

Commonly used sizes are 1⁄8, 1⁄4, 3⁄8, 1⁄2, 3⁄4, 1, 1+1⁄4, 1+1⁄2, 2, 2+1⁄2, 3, 4, 5, and 6 inch, as pipe and fittings by most U.S. suppliers. Sizes smaller than 1⁄8 inch are occasionally used for compressed air, while sizes larger than 6 inches are often joined by other methods.

## What size thread is 1/2 pipe?

Basic Dimensions, American National Standard Taper Pipe Threads, NPT, (ANSI B2. 1-1968)

Nominal Pipe Size Outside Diameter of Pipe Threads per Inch
1/4 0.540 18
3/8 0.675 18
1/2 0.840 14
3/4 1.050 14

What is the diameter of a 1/2 pipe plug?

Dia., 0.56 in Max.

### How do I know what size pipe fits I need?

To get a truly accurate reading of the pipe size, you should measure both the threads per inch and the outside diameter (or inside diameter if it’s a female pipe thread). For male pipe threads, be sure to measure the outside diameter at the widest point of the threads.

### How do I identify pipe threads?

To identify whether the thread is tapered or parallel, look at the diameter of your thread. If the thread diameter gets thinner towards the end, you are looking at a tapered thread. On the contrary, if the thread diameter is the same at the top and the bottom of the thread, you have the parallel thread.

What are the different pipe threads?

Another tapered thread is the British Standard Pipe taper, or BSP, covered by British Standard 21….Sizes.

NPT American Standard Pipe Taper Thread
NPSM American Standard Straight Mechanical Pipe Thread
NPSL American Standard Straight Locknut Pipe Thread

## How to determine pipe thread type and pipe size?

Identify if the thread is parallel or tapered

• Determine the thread pitch in mm using a thread gauge or calipers (typically 1.0,1.5,or 2.0,but other sizes do exist)
• ## How to size PVC pipe?

Plumbing fixture count: A calculation using all of the plumbing fixtures in a building.

• The length of the run of pipe: The distance from the main inside control valve to the connection on the city water main.
• Classification of the building: Residential and Commercial buildings have different sizing requirements.
• How do measure pipe length between fittings?

Wrap a string around the pipe

• Mark the point where the string touches together
• Use a ruler or measuring tape to find the length between the tip of the string and the mark you made (circumference)
• Divide the circumference by 3.14159
• ### Why is CPVC and PVC pipe a different size?

The reason is that PVC follows the IPS schedule standard (iron pipe size) and CPVC falls under the CTS standard (copper tubing size) which has two completely different diameters. Why do you care? Because your PVC fittings will not work on CPVC pipe and vice-versa.