| Flow Range |
0 – 31 GPM |
| Head Range |
0 – 31 Feet |
| Minimum Fluid Temperature |
40 °F (4.4 °C) |
| Maximum Fluid Temperature |
230 °F (110 °C) |
| Maximum Working Pressure |
125 psi (862 kPa) |
| Connection Sizes |
3/4", 1", 1-1/4", 1-1/2" Flanged |
| Voltage |
115 V |
| Frequency (Hertz) |
60 Hz |
| Phase |
1 Phase |
| Current (Amps) |
1.76 A |
| Horsepower (HP) |
1/8 HP |
| Valve Size |
1-1/2" |
| Valve Connection |
NPT |
| Piping Configuration |
Horizontal, Vertical |
| Body Material |
Ductile Iron |
| Valve Application |
Hot Water, Water |
| Max Pressure (Valve) |
125 psi WSP |
| Max Temperature (Valve) |
250 °F (121 °C) |
| Weight (Valve) |
12.00 lbs (5.44 kg) |
| Model |
CBX |
| Weight (Model CBX) |
300.00 lbs (136.08 kg) |
| Capacity |
79 gallons (299 liters) |
| Connection Size (Model CBX) |
3/4 inch |
| Pressure Rating (Model CBX) |
Up to 125 psi |
What our Experts Think
-
Reliable Performance
Designed for hydronic and non-potable systems, the CBX300-125 ensures stable pressure and system efficiency.
-
Durable Construction
Features a heavy-duty butyl rubber bladder and a fabricated steel shell, built to ASME Section VIII, Div. 1 standards.
-
Versatile Applications
Ideal for use in boiler systems, chiller plants, and hydro-pneumatic setups.
-
Factory Pre-Charged
Each unit is pre-charged to job specifications, simplifying installation and setup.
-
Long-Lasting Reliability
Engineered for durability, offering long-term performance with minimal maintenance.
Q&A
Q: What is the Taco CBX300-125?
The Taco CBX300-125 is a 79-gallon vertical bladder expansion tank designed to provide permanent separation of air and water in hydronic systems.
Q: What applications is it suitable for?
Ideal for pressure stabilization in water-based mechanical systems such as booster installations, boiler systems, and chiller plants.
Q: How is it pre-charged?
Factory pre-charged to job specifications, typically 125 PSI (862 kPa).
Q: Is it suitable for residential use?
Yes, especially for larger residential or light commercial hydronic heating systems.
Maintenance Tips
-
Installation Orientation
Install the CBX300-125 vertically only. Horizontal installation is not recommended. Ensure the system connection points downward if horizontal installation is unavoidable.
-
Pre-Charge Pressure Check
Verify the bladder's pre-charge pressure before system startup. Use a pressure gauge on the air valve to ensure it matches the system's static fill pressure.
-
Bladder Inspection
Regularly inspect the bladder for signs of wear or damage. Taco's CBX tanks feature a removable heavy-duty butyl rubber bladder, allowing for field replacement if necessary.
-
System Pressure Monitoring
Monitor the system's operating pressure to ensure it remains within the tank's rated capacity. The CBX300-125 is rated for a maximum operating pressure of 125 PSIG.
-
Temperature Considerations
Ensure the system operates within the tank's maximum temperature limit of 240°F (116°C) to prevent bladder degradation.
