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High-Pressure Replaceable Bladder Expansion Tank

replaceable bladder expansion tank 
capacity: 5L, 8L, 12L, 18L, 24L, 50L, 100L, 200L, 300L, 500L, 1000L
working pressure: 10bar
working temperature: -10℃~99℃
Availability:
Quantity:
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  • 24L

  • Solaraven

  • 8419901000


Product Overview


The replaceable bladder expansion tank is a critical component for split pressurized solar water heating systems, designed to buffer pressure fluctuations, absorb water hammer, and extend the lifespan of pumps and valves. Manufactured by Solaraven, this tank features a unique replaceable bladder design and flange connection, ensuring durability, easy maintenance, and leak-free operation. Suitable for thermal systems, water supply systems, and solar heating setups, the expansion tank operates in a wide temperature and pressure range, making it a versatile and reliable choice for residential and commercial applications.


High-Pressure Replaceable Bladder Expansion Tank


Key Features


Replaceable Bladder Design

The tank’s integral bladder is fully replaceable, simplifying maintenance and reducing long-term replacement costs. Unlike membrane expansion tanks, the bladder isolates water from the outer shell, eliminating rust and corrosion.


Flange Connection & Wide Operating Range

Equipped with a robust flange connection that withstands high torque, preventing breakage during installation and ensuring a secure, leak-free seal for years of use.

Supports working pressures of 10bar or 16bar and a temperature range of -10℃ to 99℃, adapting to diverse system requirements and environmental conditions.


Pressure Buffer & Water Supply Support

Acts as a closed-loop system to absorb volume increases from temperature changes (in thermal systems) and water hammer from valve/pump operation (in water supply systems). It also provides small amounts of nighttime water replenishment, reducing pump load and energy consumption.


Technical Specifications


Parameter

Details

Model

24L (available in 5L, 8L, 12L, 18L, 50L, 100L, 200L, 300L, 500L, 1000L)

Brand

Solaraven

Product Code

8419901000

Working Pressure

10bar / 16bar (optional)

Working Temperature

-10℃ ~ 99℃

Bladder Type

Replaceable integral bladder

Connection Type

Flange connection

Optional Accessory

Pressure gauge

Application

Split pressurized solar water heating systems, thermal systems, water supply systems


Applicable Scenarios


Split Pressurized Solar Water Heating Systems

Ideal for residential and commercial solar water heating setups, the tank absorbs thermal expansion of water, maintaining stable system pressure and protecting components like solar collectors and pumps.


Thermal Systems & Water Supply Systems

Used in industrial or residential heating systems to absorb volume increases of working media caused by temperature changes, preventing overpressure and system damage.

Buffers water hammer from sudden valve/pump openings/closing and provides nighttime water replenishment, reducing pump idle time, lowering electricity consumption, and extending pump lifespan.


Product Advantages


No Rust or Corrosion

The bladder isolates water from the tank’s outer shell, eliminating rust problems common in welded tanks and ensuring long-term structural integrity.

Easy Maintenance

The replaceable bladder allows for quick and cost-effective repairs—no need to replace the entire tank when the bladder wears out.

Leak-Free Operation

Flange connection withstands high torque and prevents installation breakage, while the closed-loop design keeps the system isolated from the external environment, avoiding leaks.

Energy-Saving

By reducing pump load and absorbing water hammer, the tank lowers electricity consumption and extends the lifespan of system components, reducing maintenance and replacement costs.


Call to Action


Ensure the reliability and efficiency of your solar water heating or water supply system with the Solaraven replaceable bladder expansion tank—available in 11 capacity options and in stock now! Whether for residential or commercial use, this tank delivers durable, low-maintenance performance. Contact our team to select the right capacity, inquire about technical details, or add the product to your basket. Invest in a high-quality pressure buffer that protects your system and saves you money—order today!


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