Watts ETX-30 4.5 Gal Carbon Steel Expansion Tank Hydronic Heating 75psi

Watts ETX-30 4.5 Gal Carbon Steel Expansion Tank Hydronic Heating 75psi

Name: Watts ETX-30 4.5 Gal Carbon Steel Expansion Tank Hydronic Heating 75psi
SKU: B0086DDNEI
Price: 53.87 USD
Availability: InStock

✅ In stock ⭐ Lowest price we've tracked

Grade

👍 Good Deal

61.51/100

Current Price

$53.87

Listed $35.99

Analysis Confidence 83%

⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.

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Price verified Sep 14, 2026 3:30 AM · Prices & availability subject to change

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👍 Good Deal

👍Verdict: Good Deal. Solid value. Price is noticeably below the recent average.
💰At 14% off its standard going rate, this offer delivers clear value for the money.
📉Our analysis places this at the most competitive price point we have ever tracked for this product — an exceptional moment to buy.
➡️Pricing has held fairly steady, with no strong push in either direction.

How We Scored This Deal

Price Competitiveness 15.85/28

Recent Value 11.66/22

Market Standing 10/20

Deal Strength 20/20

Momentum 4/10

📝 Product Overview

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Product Details

✓WATER EXPANSION TANK: With a generous 4.5 tank gallon volume, the Watts Non-Potable Water Expansion Tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve.

✓DURABLE CONSTRUCTION: This tank is constructed from high-quality carbon steel with an epoxy finish, ensuring long-lasting performance. It is also equipped with a durable expansion membrane that minimizes the loss of the air charge.

✓VERSATILE MOUNTING: This tank is designed for easy installation, mounting directly to the supply piping. It features a 1/2" MNPT system connection and a 0.302-32" charging valve connection (standard tire valve) to facilitate on-site charging.

✓HIGH PRESSURE CAPACITY: Pre-charged at 12 psi, this expansion tank is built to withstand the demands of hydronic heating systems, boasting a maximum pressure rating of 60 psi. It works in tandem with hot water heaters to absorb increased water volume, preventing system overpressure and ensuring the longevity and efficiency of the heating system.

✓EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything we design is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers. Our family of brands offers one of the most varied product lines in the world, with world-class, water-related solutions.