Measure pex pipe in 3 easy steps (it’s not as hard as you think!)
What To Know
- In addition to the OD, PEX pipe also has a nominal diameter (ND) or **inside diameter (ID)**, which refers to the inner diameter of the pipe.
- While you can use a ruler, it is not as accurate as a tape measure or a laser distance meter.
- To measure the length of coiled PEX pipe, uncoil a portion of the pipe and measure the straight length.
PEX (cross-linked polyethylene) pipe is a versatile and durable material used in various plumbing applications. Understanding how it is measured is crucial for accurate planning and installation. This comprehensive guide will delve into the intricacies of PEX pipe measurement, empowering you with the knowledge to make informed decisions.
Understanding PEX Pipe Dimensions
PEX pipe is typically measured by its outside diameter (OD), which is the distance across the outer surface of the pipe. The OD is expressed in inches, with common sizes ranging from ½ inch to 2 inches.
In addition to the OD, PEX pipe also has a nominal diameter (ND) or **inside diameter (ID)**, which refers to the inner diameter of the pipe. The ND is usually slightly smaller than the OD, and it is used to calculate the flow rate of liquids through the pipe.
Measuring PEX Pipe Length
The length of PEX pipe is typically measured in feet or **meters**. It is important to measure the length accurately to ensure you have sufficient material for your project and avoid unnecessary waste.
Methods for Measuring PEX Pipe
There are several methods for measuring PEX pipe, including:
- Tape Measure: Use a standard tape measure to measure the length of the pipe directly.
- Measuring Wheel: A measuring wheel can be rolled along the pipe to determine its length.
- Laser Distance Meter: A laser distance meter can measure the distance from one point to another, making it a convenient and accurate way to measure PEX pipe.
Types of PEX Pipe Measurement
PEX pipe can be measured in various ways depending on its application and the specific requirements of the project.
- Straight Length: The length of a straight section of pipe is measured from end to end.
- Coiled Length: Coiled PEX pipe is measured by the length of the coil, which is typically expressed in feet or meters.
- Roll Length: PEX pipe that is sold in rolls is measured by the length of the roll, which can be hundreds of feet.
Determining the Right PEX Pipe Size
Choosing the correct size of PEX pipe is essential for ensuring proper water flow and pressure. The size of the pipe is determined by the following factors:
- Flow Rate: The flow rate of the water through the pipe determines the minimum size of pipe required.
- Pressure: The water pressure in the system also affects the pipe size, with higher pressures requiring larger pipes.
- Application: The intended use of the PEX pipe (e.g., hot water, cold water, radiant heating) also influences the size selection.
Final Thoughts: Empowering You with PEX Pipe Measurement Knowledge
Understanding how PEX pipe is measured is a valuable skill that can help you plan and execute your plumbing projects with confidence. By following the guidelines outlined in this guide, you can accurately determine the dimensions, length, and size of PEX pipe needed for your specific application.
Frequently Asked Questions
Q: How do I convert the outside diameter (OD) to the nominal diameter (ND)?
A: The ND is typically 0.0625 inches smaller than the OD. For example, a PEX pipe with an OD of 1 inch has an ND of 0.9375 inches.
Q: Can I use a ruler to measure PEX pipe?
A: While you can use a ruler, it is not as accurate as a tape measure or a laser distance meter.
Q: How do I measure the length of coiled PEX pipe?
A: To measure the length of coiled PEX pipe, uncoil a portion of the pipe and measure the straight length. Multiply the straight length by the number of coils to get the total length.
