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Watts Expansion Tanks ET Series
Watts Expansion Tank Pricing
Non-Potable Water Expansion Tanks for
Hot
Water Heating Boilers and System
Series ET non-potable water expansion tanks are designed
to absorb the increased volume of water created
when the hot water boiler is heated and keep the system
pressure below the relief setting of the relief valve. Series
ET is a pre-pressurized steel tank with an expansion
membrane that prevents contact of the water with the air
in the tank. This prevents loss of air to the water and
ensures long and trouble-free life for the system.
Selection Guide
 As
an alternative to using a formula, you can use this Quick Reference
Sizing Chart to select the correct tank for your system. This table is
based upon a tank pre charge of 12psi (82kpa), a pressure relief valve
setting of 30psi (2 bars) and a system operating temperature of 200°F
(93°C). The chart takes into account typical system water volumes based
upon boiler BTU’s and type of radiation installed. Simply go to the
boiler output BTU equal to or higher than the installed boiler, read
across the chart to the correct tank model as indicated by the type of
system radiation column on the chart.
Features
• Steel construction
• Rugged flexible diaphragm
• Precharged at 12psi (82 kpa)
• Compact size saves space and energy
• Compatible with glycol in systems
Watts Expansion Tanks ET Series
Click Model for Pricing
|
Model Number |
Tank Volume(Gallons) |
Height
(Inches) |
Diameter (Inches) |
System Con.(Inches) |
|
WATTS-ET15 |
2.1 |
11 13/16 |
7 13/16 |
1/2 |
|
WATTS-ET30 |
4.7 |
15 |
10 5/8 |
1/2 |
|
WATTS-ET60 |
6.6 |
15 |
12 3/16 |
1/2 |
|
WATTS-ET90 |
13 |
21 1/8 |
15 |
3/4 |
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