WATTS 0066608 Expansion Tank Closed Loop 098268219470 ETX-90 15-GALLON

( Brand: Watts ), ( Manufacturer Part Number: 0066608 ), ( Part Type: Expansion Tank System ), ( Model Name: Non-potable Water Expansion Tank ), ( Specification Met: Buy American Act ), ( Size: 15 Gallon ), ( Style: Non-potable ), ( Color: Gray ), ( Capacity: 15.0 ), ( Item Shape: Cylindrical ), ( Model Number: 66608 ), ( Material: Carbon Steel ), ( Unit Count: 1.0 ), ( UPC: 098268219470 ), ( Weight: 22.8 Pounds )

Review WATTS 15-gallon Non Potable Expansion Tank For Closed loop Systems

The Watts 0066608 ETX-90 15-gallon expansion tank is a crucial component for maintaining the proper operation of closed-loop hydronic heating systems. This expansion tank, manufactured by Watts Water Technologies, is specifically designed to accommodate the volume change that occurs within the system due to temperature fluctuations.

The ETX-90 model has a capacity of 15 gallons, providing ample space to accommodate the expansion and contraction of the system's hydraulic fluid. Its unique design includes a diaphragm made of high-quality, FDA-compliant food-grade butyl rubber. This diaphragm ensures that the system's potable water remains separate from the air space in the tank, preventing contamination and ensuring optimal system performance.

The Watts 0066608 ETX-90 expansion tank features a durable, corrosion-resistant polypropylene shell. The tank's shape allows for easy installation in various locations, and its large size accommodates the expansion requirements for even the most demanding heating applications.

The tank is equipped with a visible air vent, which allows for easy monitoring of the air pressure within the system. This vent ensures that excess air is released from the system, preventing potential damage from air binding, water hammer, or other pressure-related issues.

Additionally, the tank's top connection is threaded, allowing for easy installation using common plumbing tools. It is important to note that a proper installation and maintenance schedule must be followed to ensure the longevity and optimal performance of the Watts 0066608 ETX-90 expansion tank.

In summary, the Watts 0066608 ETX-90 15-gallon expansion tank is a dependable and essential component for closed-loop hydronic heating systems. Its large capacity, durable design, and easy installation make it a top choice for professionals and DIY enthusiasts alike. By accommodating the expansion and contraction of the system's hydraulic fluid, this tank ensures that the heating system operates efficiently and effectively, providing consistent comfort and reliability.

Pros and Cons of buying a 0066608 ETX-90 15-Gallon Expansion Tank for Closed-Loop Systems

a. Compatibility: This expansion tank is designed specifically for closed-loop systems, ensuring a perfect fit and seamless integration.

b. Durability: The ETX-90 model is made from high-quality materials, including a rust-resistant, polybutylene exterior and a heavy-duty, reinforced rubber bladder.

c. Capacity: With a 15-gallon capacity, this expansion tank can accommodate significant changes in coolant volume, providing excellent protection against system damage.

d. Easy Installation: The tank features a conveniently located pressure relief valve, making installation straightforward and hassle-free.

a. Price: Compared to smaller, less advanced expansion tanks, the ETX-90 can be more expensive, which may be a deterrent for some buyers.

b. Size: The larger size of the tank may require more installation space, which could be a concern for those working in confined areas.

c. Weight: At over 40 pounds, the 15-gallon expansion tank is relatively heavy, which could pose a challenge during installation or relocation.

The 0066608 ETX-90 15-gallon expansion tank offers several advantages for those with closed-loop systems, including its compatibility, durability, capacity, and easy installation. However, its higher price point, larger size, and greater weight are potential drawbacks that must be considered. Ultimately, if your closed-loop system requires a large expansion tank with excellent protection and compatibility, the ETX-90 may be an excellent investment.

If you're shopping for a high-capacity expansion tank for your closed-loop system, the 0066608 ETX-90 15-gallon model is worth considering. Its robust design, ease of installation, and compatibility with closed-loop systems make it an excellent choice for those seeking reliable protection against coolant volume changes. However, be sure to weigh the potential advantages against the cons, particularly the higher cost, larger size, and weight, before making a final decision.

Details:

Maximum pressure 75 psi and can be used in residential or commercial hydroponic heating systems. Made of carbon steel with epoxy finish, mounts to supply piping, 3/4 inch MNPT system connection and .302-32 charging valve for on-site the tank. Use in tandem with your hot water heater to absorb increased volume ensuring long and trouble-free life for the system. The carbon steel tank is pre-charged at 12 psi, has a 15 gallon volume, and features durable expansion membrane preventing minimizes loss of the air change ensures long trouble-free life for system.

watts ETX-90 15-Gallon Non Potable Expansion Tank for Closed-Loop Systems: This non-potable water expansion tank is closed loop hydroponic heating system piping to control the thermal of hot and maintain pressure below relief sett valve.

part #: 0066608 prices

• $98.99-$442.93

specifications wateheat:

• brand: Watts
• mpn: 0066608
• part type: Expansion Tank System
• model name: Non-potable Water Expansion Tank
• specification met: Buy American Act
• size: 15 Gallon
• style: Non-potable
• color: Gray
• capacity: 15.0
• item shape: Cylindrical
• model number: 66608
• material: Carbon Steel
• unit count: 1.0
• upc: 098268219470
• weight: 22.8 Pounds

payments wateheat:

• wallet: Apple-pay
• other
• credit card: Visa

seller wateheat:

• # reviews: 283
• city: Multiple Locations
• rating: 97.6%

offer wateheat:

• sold: 0
• started: June 22, 2025
• options: Ship-to-home
• availability: In Stock
• quantity: 1

shipping wateheat:

• service: Economy
• transit: 3-5 Days
• class: Economy
• type: Fixed
• cost: $0.00

returns wateheat:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

general wateheat:

• condition: Open box
• Heating, Cooling Air > Water Heaters > Tankless Water Heaters

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