---
title: Metraloop Expansion Joint Product Overview
description: Our manufacturing friends at Metraflex know their way around a loop! Episode Nine from their mini-series is hosted by Keith Gettelfinger, who dives into the details about the infamous Metraloop®.  
---

[Hooked on Hydronics Blog](https://blogs.heattransfersales.com/blog)

# [Metraloop Expansion Joint Product Overview](https://blogs.heattransfersales.com/blog/metraloop-expansion-joint-product-overview)

 Written by [HTS Marketing Team](https://blogs.heattransfersales.com/blog/author/hts-marketing-team) | Jun 12, 2020 12:02:39 PM

 

Our manufacturing friends at [Metraflex](https://www.metraflex.com/) know their way around a loop! Episode Nine from their mini-series is hosted by Keith Gettelfinger, who dives into the details about the infamous [Metraloop®.](https://www.metraflex.com/metraloop/)  

 

**Here are a few of our takeaways: ** 

1. **The main reason to use the Metraloop is to significantly decrease the anchor loads. **This leads to less guiding requirements.  
2. **The Metraloop can handle all types of movement, even from seismic events. **This also includes thermal expansion, thermal traction, off-set and building settlement.  
3. **Keith discusses details of different kinds of loops. **

- - **Metraloop** or U-shaped loop: This is the most standard loop. One big reason that may prevent use is the large B dimension, which can sometimes have trouble fitting.  
    - **The V Loop**: This is shaped like a “V”, which allows the B dimension to be shorter and the A dimension to be a little longer. Therefore, this can be used when the Metraloop won’t fit. Note: You can nest these, but not always. Follow this rule: If the center to center dimension of the pipe in the rack (A) times 0.3 is less than the distance between OD of the insulation (Gap B), the standard V-loops will not be able to nest. Custom V-loops will be required.  
    - **The Dog Leg**:This is shaped like a “L.” It is inline, which means you need to have a 90 in your line. This replaced the Corner Loop to reduce on space.  

1. **Always allow the return fitting to move!** If you do not, then you will not get the full benefits of the  This can also lead to a failure.  

 

 

If you have any questions about Metraflex products or applications for projects, you should contact your local manufacturer’s rep. 

 

Blog and image content: Metraflex

[View full post](https://blogs.heattransfersales.com/blog/metraloop-expansion-joint-product-overview)

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