How to measure the center distance of radiator
When installing or replacing radiators, accurately measuring the center distance of the radiator is a key step to ensure smooth pipe connection. This article will introduce in detail the definition, measurement method and common specifications of the radiator center distance to help you easily complete the measurement work.
1. What is the center distance of the radiator?

The center distance of the radiator refers to the vertical distance between the center points of the water inlet and outlet of the radiator. This data determines the matching degree of the radiator and the piping system, and is an important parameter when purchasing and installing the radiator.
| Terminology | definition |
|---|---|
| center distance | The vertical distance between the center points of the water inlet and outlet |
| Common specifications | 300mm, 400mm, 500mm, 600mm, etc. |
2. How to measure the center distance of the radiator?
The following are detailed steps for measuring the center distance of radiators:
| steps | Operating Instructions |
|---|---|
| 1 | Turn off the heating system to ensure safe operation |
| 2 | Find the water inlet and outlet of the radiator |
| 3 | Use a tape measure to measure the vertical distance between the center points of the two holes |
| 4 | Record measurements to the nearest millimeter |
3. Common radiator center distance specifications
Different models of radiators may have different center distance specifications. The following is the common center distance data of radiators on the market:
| Radiator type | Common center distance (mm) |
|---|---|
| Steel panel radiator | 300, 400, 500, 600 |
| Copper-aluminum composite radiator | 350, 450, 550, 650 |
| cast iron radiator | 400, 500, 600, 700 |
4. Measurement precautions
When measuring the center distance of the radiator, you need to pay attention to the following points:
| Things to note | Description |
|---|---|
| measuring tools | Use an accurate tape measure or vernier calipers |
| Measurement direction | Make sure you measure vertical distance and not horizontal distance |
| multiple measurements | It is recommended to measure 2-3 times and take the average |
| error range | Allow ±5mm measurement error |
5. Why is center distance measurement important?
Accurate radiator center distance measurement is essential for the normal operation of the entire heating system:
| importance | Reason |
|---|---|
| Pipe matching | Ensure radiators fit perfectly into existing ductwork |
| Installation efficiency | Reduce adjustments and rework during installation |
| System performance | Ensure optimal operating efficiency of your heating system |
| Service life | Avoid damage to radiators caused by improper installation |
6. Professional advice
If you still have questions about the measurement of the center distance of the radiator, we recommend:
1. Consult a professional heating installer
2. Refer to the technical parameters provided by the radiator manufacturer
3. Before purchasing, confirm that the measurement data is consistent with the product specifications.
Through the introduction of this article, I believe you have mastered the method of measuring the center distance of radiators. Correct measurements not only ensure a smooth installation of the radiator, but also increase the efficiency and longevity of the entire heating system.
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