AMTROL ST30V Water Heater Expansion Tank Gal.

( Brand: Amtrol ), ( Manufacturer Part Number: ST30V ), ( Model: AMTROL ST30V ), ( Type: Thermal Expansion Tank ), ( Unit Type: Gal ), ( Power Source: Hydronic, Pneumatic ), ( Color: Beige )

Review AMTROL Water Heater Expansion Tank Gal. New

The Amtrol ST30V Water Heater Expansion Tank, with a capacity of 14 gallons, is an essential addition to ensure the optimal performance and longevity of your water heating system. Designed specifically for use with residential water heating applications, this expansion tank effectively accommodates the increased volume of water caused by temperature fluctuations.

This particular model, the ST30V, is engineered to meet the ASME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code Section III, Division 1 requirements for pressure vessels. It boasts a working pressure of 15 psi and a maximum working pressure of 150 psi.

The Amtrol ST30V Water Heater Expansion Tank is constructed with a rugged, fiber-reinforced polypropylene material. Its durable design ensures resistance to corrosion and cracking, extending the tank's lifespan and reliability. Additionally, the tank features a transparent sight glass, which allows for easy monitoring of the anode rod and water level.

The tank's air eliminator system effectively minimizes the presence of air within the water heater system. This feature is crucial as trapped air can lead to noisy operation and decreased heating efficiency. Moreover, the air eliminator system helps prevent the formation of potentially damaging vacuum conditions.

The Amtrol ST30V Water Heater Expansion Tank is equipped with a robust, threaded NPT (National Pipe Thread) connection and comes with a factory-installed, easily replaceable 1/2 inch NPT inlet and outlet ball valves. These features simplify the installation process and make maintenance and servicing more convenient.

In summary, the Amtrol ST30V Water Heater Expansion Tank, with its 14-gallon capacity, robust construction, reliable air eliminator system, and easy installation, is an indispensable component for ensuring the optimal performance and longevity of your water heating system.

The Amtrol ST30V water heater expansion tank, with a capacity of 14 gallons, is a common choice for addressing the issue of water expansion during heating in residential water heating systems. Here are some pros and cons associated with purchasing this particular model:

1. Size: The 14-gallon capacity is sufficient for most standard residential water heating systems, making it a practical and space-efficient solution.

2. Durability: Amtrol is known for manufacturing high-quality, reliable products. This expansion tank is made from corrosion-resistant materials, ensuring a long service life.

3. Safety: The tank is designed to accommodate the pressure increase that occurs during water heating, helping prevent damage to the water heater or plumbing system due to excessive pressure.

4. Easy Installation: The tank comes with a pre-attached pressure relief valve, making installation a relatively straightforward process.

5. Certified: The Amtrol ST30V expansion tank conforms to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, ensuring compliance with safety standards.

1. Price: Compared to smaller expansion tanks, the Amtrol ST30V is more expensive due to its larger capacity and higher-quality materials.

2. Weight: At nearly 60 pounds, this expansion tank is heavier than some other models, requiring additional effort and resources for transportation and installation.

The Amtrol ST30V water heater expansion tank is a dependable and effective solution for addressing water expansion in residential water heating systems. Its size, durability, safety, easy installation, and ASME certification make it a worthwhile investment, despite its higher cost and weight.

If your residential water heating system requires an expansion tank to accommodate water expansion during heating, the Amtrol ST30V is a solid choice. Its advantages, such as high-quality materials, easy installation, and long service life, outweigh the initial investment and any potential challenges related to its size and weight.

Details:

With a beige color and Amtrol branding, this model is reliable addition to your home heating cooling setup. The Amtrol ST30V Water Heater Expansion Tank is a 14 gal thermal expansion tank designed for use with pneumatic and hydronic hot water systems. The Amtrol ST30V is a new and efficient way to ensure your water heater operates at optimal capacity, making it valuable investment for any home improvement project related heating hot systems.

part #: st30v prices

• $249.00-$384.72

specifications wateheat:

• brand: Amtrol
• mpn: St30v
• model: Amtrol St30v
• type: Thermal Expansion Tank
• unit type: Gal
• power source: Hydronic, Pneumatic
• color: Beige

shipping wateheat:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• transit: 3-10 Days
• type: Calculated
• cost: $41.02
• class: Standard

offer wateheat:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• best offers: True
• started: January 12, 2026
• quantity: 1

seller wateheat:

• city: Hamden, Connecticut
• rating: 100.0%
• # reviews: 525

payments wateheat:

• credit card: Diners-club
• wallet: Apple-pay
• other

general wateheat:

• Heating, Cooling Air > Water Heaters > Water Heater Parts
• condition: New

returns wateheat:

• policy: No Returns

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