ZILMET Hydronic Expansion Tank Carbon Steel Connection ZHT-18 4.8GL

( Brand: Zilmet ), ( Part Type: Tank ), ( Manufacturer Part Number: ZHT18 )

Review ZILMET Hydronic Expansion Tank Carbon Steel Side Connection

The Zilmet ZHT18, also known as the ZHT-18 hydronic expansion tank, is a high-quality expansion solution designed for use in hydronic heating systems. This carbon steel expansion tank, with a capacity of 4.8 gallons (18 liters), is engineered to accommodate the thermal expansion that occurs within the hydronic system as water heats and cools.

The Zilmet ZHT18 is constructed from carbon steel, ensuring durability and long-lasting performance. Its design includes a bladder made from a synthetic rubber material, which provides a reliable and efficient means of accommodating system pressure changes. The bladder is encased within the tank, protected by the outer shell and securely fastened with a clamp band.

The tank features two carbon steel connections, each with a 1/2-inch NPT (National Pipe Tapered) threaded inlet and outlet. These connections allow for easy integration with the hydronic system, ensuring a secure and leak-free connection. The inlet and outlet are also equipped with threaded caps to prevent water leakage when the system is not in use.

The Zilmet ZHT18 expansion tank is designed to meet the needs of various hydronic heating applications. It is suitable for systems utilizing a wide range of heating sources, including hot water baseboard radiators, radiant floor heating, and hydronic fan coils. The tank's compact size makes it an excellent choice for installation in confined spaces, while its robust construction ensures it can withstand the demands of even the most demanding heating systems.

In summary, the Zilmet ZHT18 hydronic expansion tank is a high-performance and reliable solution for accommodating thermal expansion in hydronic heating systems. Its carbon steel construction, synthetic rubber bladder, and convenient two-connection design make it a versatile and durable choice for a wide range of heating applications.

Pros and Cons of buying a Zilmet ZHT18/ZHT-18 Hydronic Expansion Tank

The Zilmet ZHT18/ZHT-19 hydronic expansion tank is a common choice for those in need of a reliable and durable solution for their hydronic heating systems. Let's examine the advantages and disadvantages of purchasing this carbon steel expansion tank.

1. Durability: The Zilmet ZHT18/ZHT-19 is constructed from carbon steel, making it a highly durable option for hydronic heating systems. Carbon steel is known for its strength and resistance to corrosion, ensuring the tank can withstand the demands of the system.

2. Size: With a capacity of 4.8 gallons, the Zilmet ZHT18/ZHT-19 is a suitable size for most residential heating applications. Its compact design makes it easy to install in tight spaces.

3. Easy installation: The tank features threaded connections, making installation straightforward for most DIY homeowners. It also comes with a pressure relief valve and a bleed valve for convenient setup and maintenance.

4. Cost-effective: Compared to other expansion tanks on the market, the Zilmet ZHT18/ZHT-19 is relatively affordable, making it an attractive option for those on a budget.

1. Limited compatibility: The Zilmet ZHT18/ZHT-19 is designed for use with hydronic heating systems only. It may not be suitable for other types of heating systems, such as radiant flooring or water heating systems.

2. Requires maintenance: Like all expansion tanks, the Zilmet ZHT18/ZHT-19 requires periodic maintenance to ensure proper function. This includes checking the pressure level and filling the tank with the appropriate amount of air or nitrogen as needed.

3. Potential for noise: When the system expands or contracts, the expansion tank may produce some noise. This is a common occurrence with hydronic heating systems and is not necessarily a drawback of the Zilmet ZHT18/ZHT-19 specifically.

The Zilmet ZHT18/ZHT-19 hydronic expansion tank offers a combination of durability, ease of installation, and cost-effectiveness, making it an excellent choice for those in need of a reliable solution for their hydronic heating system. However, it may not be compatible with other types of heating systems and requires periodic maintenance. Ultimately, if you're looking for a dependable and budget-friendly expansion tank for your hydronic heating system, the Zilmet ZHT18/ZHT-19 is a solid choice.

Details:

Capacity: 4.8 Gallons. Connection Type: Side. Side connection for quick and easy installation. It is made from carbon steel, ensuring durability and reliability.Diaphragm design for effective expansion management.

Zilmet offers the ZHT-18 hydronic expansion tank for non-potable heating systems. Diaphragm Material: SBR. This tank is designed to manage water expansion and maintain system pressure effectively. Technical Specifications: Type: Hydronic Expansion Tank.

Material: Carbon Steel. Product highlights: The ZHT-18 provides efficient pressure control while enhancing system safety.: Standard Brand: ZILMET.

part #: zht18 prices

• $83.70-$114.80

specifications breezeprobe:

• brand: Zilmet
• part type: Tank
• manufacturer part number: ZHT18

shipping breezeprobe:

• transit: 5-9 Days
• type: Fixed
• service: Standard
• class: Standard
• cost: $0.00

offer breezeprobe:

• availability: In Stock
• started: November 26, 2025
• sold: 0
• quantity: 24
• options: Ship-to-home

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

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• # reviews: 14832
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• city: Dresher, PA

general breezeprobe:

• HVAC Refrigeration > HVAC Refrigeration Tools > HVAC Refrigeration: Gauges Probes
• condition: New