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🔥 Keep your heat flowing, pressure controlled! 🔥
The Watts ETX-30 is a 4.5-gallon carbon steel expansion tank designed for closed loop hydronic heating systems. Pre-charged at 12 psi and rated for up to 60 psi, it controls thermal expansion to prevent overpressure. Its durable epoxy finish and easy mounting with a 1/2" MNPT connection ensure reliable, long-lasting performance in both residential and commercial settings.









| ASIN | B0086DDNEI |
| Best Sellers Rank | #15,569 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Hydraulic Tanks & Reservoirs |
| Date First Available | August 17, 2005 |
| Item Weight | 8 pounds |
| Item model number | ETX-30 |
| Manufacturer | Watts |
| Product Dimensions | 10.8 x 11.1 x 14.8 inches |
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