Measure pex pipe size like a pro: the ultimate guide for every diyer
What To Know
- The OD represents the diameter of the pipe from its outer edge to the other, while the wall thickness measures the thickness of the pipe’s material.
- The nominal pipe size (NPS) is a standard designation for PEX pipes and is typically larger than the actual OD.
- Use a tape measure or ruler to measure the distance from one end of the pipe to the other.
Measuring PEX pipe size is a crucial step in plumbing projects, ensuring a seamless fit and optimal performance. This guide will delve into the intricacies of measuring PEX pipes, empowering you with the knowledge and techniques to execute this task with precision.
Understanding PEX Pipe Dimensions
PEX pipes are typically measured by their outside diameter (OD) and **wall thickness**. The OD represents the diameter of the pipe from its outer edge to the other, while the wall thickness measures the thickness of the pipe’s material.
Measuring Outside Diameter (OD)
Method 1: Pipe Measuring Tape
1. Wrap a pipe measuring tape around the circumference of the pipe.
2. Read the measurement at the point where the tape overlaps.
3. Divide the measurement by 3.14 (π) to obtain the OD.
Method 2: Calipers
1. Open the calipers to a diameter slightly larger than the pipe.
2. Close the calipers around the pipe until they fit snugly.
3. Read the measurement on the calipers, which represents the OD.
Measuring Wall Thickness
Method 1: Micrometer
1. Hold the micrometer perpendicular to the pipe’s surface.
2. Squeeze the anvils together until they touch the pipe’s inner and outer surfaces.
3. Read the measurement on the micrometer’s scale, which represents the wall thickness.
Method 2: Caliper with Depth Gauge
1. Open the caliper to a diameter slightly larger than the pipe.
2. Insert the depth gauge into the pipe until it touches the inner surface.
3. Subtract the depth gauge reading from the caliper reading to obtain the wall thickness.
Identifying Nominal Pipe Size
The nominal pipe size (NPS) is a standard designation for PEX pipes and is typically larger than the actual OD. To determine the NPS, refer to the following table:
| Nominal Pipe Size (NPS) | Outside Diameter (OD) |
| — | — |
| 1/2 inch | 0.875 inch |
| 3/4 inch | 1.050 inch |
| 1 inch | 1.315 inch |
| 1 1/4 inch | 1.660 inch |
| 1 1/2 inch | 1.900 inch |
Measuring PEX Pipe Length
1. Stretch out the PEX pipe to its full length.
2. Use a tape measure or ruler to measure the distance from one end of the pipe to the other.
Tips for Accurate Measurement
- Ensure the pipe is clean and free of debris.
- Use calibrated measuring tools for precise readings.
- Measure the pipe in multiple locations to account for any variations.
- If possible, refer to the manufacturer’s specifications for the pipe’s nominal size and wall thickness.
Applications of PEX Pipe Size Measurement
Accurate PEX pipe size measurement is essential for:
- Selecting the correct fittings and connectors
- Calculating the required amount of pipe for a project
- Ensuring proper water flow and pressure
- Complying with plumbing codes
Takeaways: Demystifying PEX Pipe Size Measurement
Measuring PEX pipe size is a straightforward process that requires the right tools and techniques. By following the steps outlined in this guide, you can ensure accurate measurements, leading to successful plumbing projects and a reliable water supply.
Popular Questions
Q: What is the difference between OD and NPS?
A: OD is the actual outside diameter of the pipe, while NPS is a standard designation that may be larger than the OD.
Q: Can I measure PEX pipe size with a regular ruler?
A: While it’s possible, it’s not recommended as regular rulers may not provide accurate readings. Pipe measuring tapes or calipers are more precise.
Q: How do I choose the right PEX pipe size for my project?
A: Consider the water flow requirements, pressure, and the type of fittings you’ll be using. Consult with a plumber or refer to the manufacturer’s specifications for guidance.
