Understanding the Role and Importance of Boiler Expansion Tanks
Many people are unaware of the existence and purpose of boiler expansion tanks. At The Stanley Louis Company, we often recommend these tanks to clients based on their specific needs. If you’re a good candidate for a boiler expansion tank, we’ll discuss it with you when you contact us for boiler service.
In the meantime, read on to learn more about what boiler expansion tanks are and why they are essential. Contact us at 800-217-6527 for boiler service.
The Purpose of Hot Water Boiler Expansion Tanks
Boiler expansion tanks provide a cushion for water as it expands when heated. Without this cushion of air, the pressure within the boiler system can exceed safe levels, causing the pressure relief valve to open and discharge water to relieve the pressure. A boiler expansion tank helps prevent this by maintaining balanced pressure within the system, ensuring safe and efficient operation.
Types of Boiler Expansion Tanks
There are several types of boiler expansion tanks, and your local boiler service company can help you determine which type is best suited to your needs. The two main types are steel-type expansion tanks and bladder-type expansion tanks.
Steel-Type Expansion Tanks
Steel-type expansion tanks look like long steel drums. In these tanks, the air and water are in direct contact. The air in the tank acts as a cushion, absorbing excess pressure when the water is heated and expands. These tanks are still in use, especially in older systems.
Bladder-Type Expansion Tanks
Bladder-type expansion tanks are more common in newer boiler systems. In these tanks, the air and water are separated by a diaphragm. The air can be compressed in a closed-loop system, allowing it to absorb pressure more effectively. This separation prevents the air from dissolving into the water, which can improve the system’s efficiency and longevity.
Both types of expansion tanks can be used in various applications, including hot water heating, domestic water heaters where water hammer and pressure issues occur, and chilled water cooling systems.
How Boiler Expansion Tanks Work
Inside a steel expansion tank, the air acts like a spring, absorbing the excess pressure produced when water is heated in the boiler system. The water expands and contracts not due to compression but due to basic physical principles when it is heated or cooled. This mechanism helps maintain a stable pressure level within the boiler, preventing unnecessary strain on the system and reducing the likelihood of water discharge through the pressure relief valve.
Get Expert Help with Boiler Expansion Tanks from The Stanley Louis Company
If you have questions about boiler expansion tanks or other boiler-related issues, The Stanley Louis Company is here to help. We specialize in a wide range of services, including the installation and maintenance of solar water heaters and other boiler systems. Call us today at 800-217-6527 for service, to get answers to your questions, or to find out which boiler system is best for your unique needs. Our team of experts is ready to assist you with all your boiler and heating needs, ensuring your system runs safely and efficiently.
