
0066606 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $88.15 | Top Pick! Condition is New, Watts 0066606 Expansion Tank 4.5 Gallon 1/2 NPT, FREE SHIPPING | ![]() |
![]() | $80.00 | Condition is New, WATTS 0066606 MODEL ETX-30 / ETX30 PRESSURIZED EXPANSION TANK W/ DIAPHRAGM NSFS, shipping cost = $17.02 | 100.0% |
![]() | $103.61 | Condition is New, Watts 0066606; ETX-30 Expansion Tank (4.5gal), FREE SHIPPING | 99.0% |

The Watts 0066606 ETX-30 Pressurized Expansion Tank is an essential component for maintaining the proper functioning and efficiency of your heating system. This expansion tank, specifically designed for a 75 psig (pounds per square inch gauge) pressure with a 1/2 MNPT (Male National Pipe Thread) connection, is engineered to accommodate the volume change that occurs within your system as it heats and cools.
The ETX-30 tank is made from high-quality materials, ensuring durability and reliability. The tank's body is constructed from corrosion-resistant polypropylene, while the diaphragm is made from a rugged, reinforced rubber material. This design allows the tank to effectively handle the pressure fluctuations without compromising its integrity.
The Watts ETX-30 expansion tank features a clear sight glass, enabling you to easily monitor the antifreeze level inside the tank. This simple yet effective feature helps ensure that your heating system is always adequately filled, reducing the risk of costly repairs or damage caused by low coolant levels.
The tank comes with a factory-installed pressure relief valve, providing an additional layer of safety to your heating system. This valve is designed to release excess pressure if the system becomes overpressurized, preventing potential damage to the tank or other components.
The compact design of the Watts ETX-30 Pressurized Expansion Tank makes it suitable for installation in a variety of spaces. Its versatile size allows for easy integration into both residential and commercial heating systems, ensuring optimal performance and efficiency.
In summary, the Watts 0066606 ETX-30 Pressurized Expansion Tank is a crucial addition to your heating system. Its robust construction, clear sight glass, and factory-installed pressure relief valve combine to offer reliable, efficient, and safe operation. Trust the Watts brand for your heating system needs and enjoy the peace of mind that comes with a properly maintained and functioning expansion tank.
The Watts 0066606 ETX-30 Pressurized Expansion Tank is a crucial component of a heating system that ensures the safe and efficient operation of the system. Here are some pros and cons of buying this specific model:
Pros:1. Designed for use with high-pressure heating systems, this tank can handle up to 75 psi and 1/2 MNPT threads.
2. It comes with a factory-installed pressure relief valve, which helps prevent overpressure situations that can cause damage to the system or potential safety hazards.
3. The tank is made of high-quality materials, including a durable, corrosion-resistant polypropylene body and a stainless steel base.
4. The tank's compact design allows for easy installation in tight spaces.
5. Watts offers a one-year limited warranty on this product.
Cons:1. Some customers have reported issues with the pressure relief valve, which may need to be replaced soon after installation.
2. The tank may not be suitable for use with non-potable water, as it is not NSF certified.
3. The price point for this tank is higher than some other models on the market.
In conclusion, the Watts 0066606 ETX-30 Pressurized Expansion Tank is a reliable and durable option for those in need of a high-pressure expansion tank for their heating system. Its corrosion-resistant materials, factory-installed pressure relief valve, and compact design make it a worthwhile investment. However, potential buyers should be aware of the reported issues with the pressure relief valve and the higher price point compared to other models. Ultimately, if the features and benefits of this tank align with your specific needs and budget, it is a solid choice for your heating system.
Details:
With a unit quantity of 1, this model 0066606 is crucial component for maintaining optimal system performance and preventing overheating or leaks in heating cooling systems. The ETX-30 watts pressurized expansion tank is a reliable and durable unit designed for hvac refrigeration systems.
specifications maxohvac:
- brand: Watts
- mpn: 0066606
- part type: Expansion Tank
- unit type: Unit
offer maxohvac:
- best offers: true
- availability: in stock
- sold #: 18
- in stock #: 3
- options: ship-to-home
- started: june 1, 2025
- prices: $80.00–$103.61
- item condition: New
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
payments maxohvac:
- wallet: apple-pay
- other
- credit card: discover
returns maxohvac:
- policy: returns accepted
- method: money back
- paid by: seller
- time: 30 days
shipping maxohvac:
- carrier: usps
- transit: 5-11 days
- type: fixed
- class: standard
- service: usps ground advantage
seller maxohvac:
- rating: 100.0%
- # reviews: 1058
- city: falmouth, kentucky
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