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Ships within 48 hours · Estimated delivery Sep 14 - Sep 19
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Description
8 l Lead-Free Potable Water Thermal Expansion TankThe 2. 1 gallon XT 8 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene lined water chamber of the tank, expanding a diaphragm into a pre charged air chamber to keep the system pressure below the relief valve setting. Materials
The 2.1 gallon XT-8 Thermal Expansion Tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications. As the system pressure increases, water enters the polypropylene-lined water chamber of the tank, expanding a diaphragm into a pre-charged air chamber to keep the system pressure below the relief valve setting. Materials include a carbon steel shell with an epoxy finished coating, and corrosion-resistant stainless steel connection with a polypropylene liner and Butyl rubber diaphragm.- California residents
- Pre-charge is field adjustable for convenient maintenance
- Carbon steel shell with polypropylene liner ensures long-lasting construction
- Diaphragm style tank is ideal for thermal expansion protection in residential applications
- Stainless steel connection resists corrosion
- Low-lead law compliant
- IAPMO® Listed
- Water Quality Association - Certified to NSF/ANSI 61 & 372
- Steel shell protected with polypropylene liner
Features
| Item Weight | 5.5 |
| Product Weight (lb.) | 5.5 |
| Material | Carbon Steel |
| Pack Size | 1 |
| Finish Family | White |
| Returnable | 180-Day |
| Compatible Brand/Model | Zurn Industries |
| Product Depth (in.) | 11 |
| Product Height (in.) | 13.5 |
| Product Width (in.) | 11 |
| Manufacturer Warranty | All goods sold hereunder are warranted to be free from defects in material and factory workmanship for a period on one year from date of purchase. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Great shoe!
Size: 5.5 Big Kid, Color: (106) Castlerock/Anthracite/Phoenix Fire
Great fit, very durable, excellent foot support, lots of great colors to choose from. We have had these for over 6 months and thy have not overstretched or come apart in any way. I am really pleased with these shoes for my child who is VERY hard on shoes and usually has sensory issues surrounding shoe comfort/tightness.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Great fit for kids
Size: 10 Toddler, Color: Light Grey
We purchased the RUNSIDE Boys Girls Tennis Shoes for my child and have been really happy with them. They’re super lightweight and breathable, which is great for all-day wear and running around. My child says they’re comfortable, easy to put on, and don’t make their feet hot.
The shoes seem durable so far and have held up well with playground time, sports, and everyday use. They also look cute and match with a lot of outfits. The fit was true to size and the non-slip sole gives good traction.
Overall, these are a great affordable option for active kids and I would definitely buy them again!
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Reviewed in the United States on May 22, 2026
★★★★★ 5
10/10
Size: 12 Little Kid, Color: Black
Super cute! Great fit, breathable and durable material on the top of the shoe, super versatile with the solid neutral color, easy to clean, and great traction on the bottom of shoes!
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Great shoes!
Size: 5 Big Kid, Color: Light Grass Green
This is my second time purchasing these shoes!
Not only are they stylish and well made, but they are comfortable! These have been used as running shoes, they have great support and suitable for long distances. The fit is true to size.
Thank you!
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Reviewed in the United States on April 16, 2026
★★★★★ 4
Shoe laces aren't great.
Size: 3 Big Kid, Color: Black White
I bought these RUNSIDE kids tennis shoes for everyday wear and school, and overall they’re lightweight, breathable, and comfortable for active use. My child liked how easy they were to put on, and they worked well for running and general play.
The shoes themselves feel flexible and pretty comfortable for the price point. The upper material is breathable, which helps during sports or warmer weather, and they don’t feel heavy on the feet.
However, the main issue is the original shoelaces. They constantly came untied no matter how they were tied, which became frustrating pretty quickly during the day. We ended up replacing them with better-quality laces, and that solved the problem.
Pros:
* Lightweight and comfortable for kids
* Breathable material works well for active use
* Easy for everyday wear and school
* Good fit for the price
Cons:
* Original shoelaces do not stay tied well
* Laces needed to be replaced for practical use
Overall, these are solid budget-friendly kids’ sneakers that work well once the laces are swapped out. The shoe itself is comfortable and functional, but the included laces are definitely a weak point.
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Reviewed in the United States on June 4, 2026