What it delivers
The TT FLEX ET-20G-1/2 Expansion Tank is a water heater part.
Match the part to the exact heater model and its manual before ordering.
Tank volume, per the listing: 2 gal.
Expansion tanks are sized to the system's volume and pressure; relief valves to the heater's rating. Match the part to the heater's manual and local code.
Listed details: model: ET-20G-1/2.
The listing gives dimensions of 3.3 in (W) x 4.55 in (H).
Right unit for this house?
Install it when
- Installing or servicing a tankless heater
- Matching a part named in the manual
Look at another unit when
- Heaters it doesn't name
Strengths and trade-offs
Strengths
- Water heater part
Trade-offs
- Fit depends on the heater model
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | ET-20G-1/2 | Retailer |
|---|---|---|
| Tank | 2 gal | Retailer |
| Dimensions (seller) | 3.3"W x 4.55"H | Retailer |
| Features (seller) | Dual-Function Design: Thermal Expansion Protection & Water Hammer Suppression | Retailer |
Rival units at this flow
More venting and install parts rated for similar demand
Final verdict
A well-specified water heater part for installing or servicing a tankless heater.
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