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Watts ETX-15 2.1-Gallon Non-Potable Expansion Tank for Closed-Loop Systems
✅ In stock
F
Grade
Analysis Confidence
73%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 19, 2026 9:21 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉It has been quite a while since a more competitive price was available, lending today's offer solid comparative value.
- 📈Prices have been moving higher lately — waiting risks paying more if that momentum continues.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Homestead Supply & More ✅
🚚 Shipping
Free Shipping
Product Details
✓This non-potable water expansion tank is for closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief sett of the relief valve
✓The carbon steel tank is pre-charged at 12 psi, has a 2.1 gallon volume, and features a durable expansion membrane preventing minimizes loss of the air change and ensures long and trouble-free life for the system
✓Made of carbon steel with epoxy finish, mounts to supply piping, with 1/2 inch MNPT system connection and .302-32 inch charging valve connection for on-site charging of the tank
✓Maximum pressure 75 psi and can be used in residential or commercial hydronic heating systems
✓Use in tandem with your hot water heater to absorb increased water volume ensuring long and trouble-free life for the system
⚙️ Specifications
Brand
Watts
Color
Gray
Material
Carbon Steel
Capacity
2.1 gallons
Shape
Round
UPC
098268219340
Manufacturer
Watts
Product Dimensions
8.5 x 8.5 x 8.5 inches
Item Weight
4.69 pounds
ASIN
B0025POS7E
Item model number
66605
