Amtrol Therm-X-Trol - 2 Gallon - In-Line Thermal Expansion Tank

Amtrol Therm-X-Trol - 2 Gallon - In-Line Thermal Expansion Tank
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Model: ST-5
(Based on expert analysis, manufacturer ratings and customer reviews)
5.0 out of 55.0 out of 55.0 out of 55.0 out of 55.0 out of 5
Number of Reviews (1)
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$39.00
In-Stock
Ships Thursday, May 28th
Storage Volume (Gallons)
ASME Certified Learn More
ASME Certified
The largest focus of the American Society of Mechanical Engineers is the Boiler and Pressure Vessel Code (BPVC). The BPVC provides regulations for design, fabrication, installation, inspection, care, and use of boilers, pressure vessels, and nuclear components. This certification is given to show that these standards are met.
In-Stock
Ships Thursday, May 28th
Shipping Info
Shipping Info
*We currently CANNOT ship this product to Canada or any destination outside of the United States
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  • 1
    Product Q&A
  • How-To Articles
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Product Description
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Features
Features
    In 1954, Amtrol invented the thermal expansion tank to control pressure build-up in closed, hot water systems. Today they are continuing to roll out efficient and reliable tanks to improve your system. The ST in-line thermal expansion tank is a perfect example of this. By accepting expanded water caused by thermal expansion, the ST is able to then return the water to the system when hot water is used. The ST also prevents pressure relief valve discharge, dripping faucets, and intermittent toilet fill. From the strong deep drawn steel domes with corrosion resistant liner to the welded air charge fitting, the ST is designed to prevent damaging pressure buildup and eliminate energy and water waste. The ST-5 is ideal for residential applications.
  • USA Made
  • All ST thermal expansion tanks are made in the USA at facilities certified for maintaining high-quality standards.
  • Heavy Duty Tank
  • From the deep drawn steel dome with rigid polypropylene liner to the welded air charge fitting, this thermal expansion tank is constructed from top to bottom for maximum strength and corrosion resistance.
  • Eliminates Wasted Energy
  • Expanded water caused by thermal expansion is collected by the ST tank which returns the water back to your system which preventing faucet drips, intermittent toilet fill, and pressure relief valve discharge.
  • Protection for Your System
  • ST thermal expansion tanks are designed to protect your water heater, fixtures, and appliances by preventing dangerous pressure build up.
Specifications
General Information
Product Line
Therm-X-Trol
Connection Type
NPT
Color
Tan
UPC
642031395665
Performance
Maximum Operating Temperature
200 F
Maximum Operating Pressure
150 PSI
Dimensions
Storage Volume
2 Gallons
Maximum Acceptance Volume
0.9 Gallons
Connection Size
3/4 Inch
Product Diameter
8 Inches
Product Height
12 5/8 Inches
Shipping Width
8 Inches
Shipping Height
13 Inches
Shipping Length
8 Inches
Certifications
Country of Origin
United States
Warranty Information
Warranty Learn More
Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Features
Features
    In 1954, Amtrol invented the thermal expansion tank to control pressure build-up in closed, hot water systems. Today they are continuing to roll out efficient and reliable tanks to improve your system. The ST in-line thermal expansion tank is a perfect example of this. By accepting expanded water caused by thermal expansion, the ST is able to then return the water to the system when hot water is used. The ST also prevents pressure relief valve discharge, dripping faucets, and intermittent toilet fill. From the strong deep drawn steel domes with corrosion resistant liner to the welded air charge fitting, the ST is designed to prevent damaging pressure buildup and eliminate energy and water waste. The ST-5 is ideal for residential applications.
  • USA Made
  • All ST thermal expansion tanks are made in the USA at facilities certified for maintaining high-quality standards.
  • Heavy Duty Tank
  • From the deep drawn steel dome with rigid polypropylene liner to the welded air charge fitting, this thermal expansion tank is constructed from top to bottom for maximum strength and corrosion resistance.
  • Eliminates Wasted Energy
  • Expanded water caused by thermal expansion is collected by the ST tank which returns the water back to your system which preventing faucet drips, intermittent toilet fill, and pressure relief valve discharge.
  • Protection for Your System
  • ST thermal expansion tanks are designed to protect your water heater, fixtures, and appliances by preventing dangerous pressure build up.
Specifications
General Information
Product Line
Therm-X-Trol
Connection Type
NPT
Color
Tan
UPC
642031395665
Performance
Maximum Operating Temperature
200 F
Maximum Operating Pressure
150 PSI
Dimensions
Storage Volume
2 Gallons
Maximum Acceptance Volume
0.9 Gallons
Connection Size
3/4 Inch
Product Diameter
8 Inches
Product Height
12 5/8 Inches
Shipping Width
8 Inches
Shipping Height
13 Inches
Shipping Length
8 Inches
Certifications
Country of Origin
United States
Warranty Information
Warranty Learn More
Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Product Specs
+
Specifications
General Information
Product Line
Therm-X-Trol
Connection Type
NPT
Color
Tan
UPC
642031395665
Performance
Maximum Operating Temperature
200 F
Maximum Operating Pressure
150 PSI
Dimensions
Storage Volume
2 Gallons
Maximum Acceptance Volume
0.9 Gallons
Connection Size
3/4 Inch
Product Diameter
8 Inches
Product Height
12 5/8 Inches
Shipping Width
8 Inches
Shipping Height
13 Inches
Shipping Length
8 Inches
Certifications
Country of Origin
United States
Warranty Information
Warranty Learn More
Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
1 Year
Reviews
(1)
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Amtrol ST-5 Reviews & Ratings
Product Q&A
(1)
+
Search Product Q&A's Answered by Bob, the Heating Product Expert
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What is the purpose of an expansion tank? Are they required by state law?
Edgar F. 
from Tennessee 
October 03, 2019
Answer
Some building codes require them. Typically they're to be used with tankless water heaters. When the hot water is trapped in the line, it may push back on the faucets or the water heater. The expansion tank will help reduce wear on both.
How-To Articles
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