Taco CX254-125 - 67 Gal Vertical Expansion Diaphragm Tank - CX254-125
The Taco CX254-125 is a sixty-seven-gallon vertical expansion diaphragm tank. It has a one-inch bottom connection and can handle pressures up to one hundred twenty-five psi. This diaphragm tank effectively provides a separation of air and water, allowing the water to expand into the upper tank while the air pre-charge remains in the lower section.
Features
- Durable vertical steel construction
- Diaphragm design for efficient water expansion
- Maximum pressure rating of 125 psi
Specifications
| Model |
CX |
| Weight |
205.00 lbs |
What our Experts Think
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Reliable Pressure Stabilization
The Taco CX254-125 is a 67-gallon vertical diaphragm tank designed to maintain consistent pressure in closed-loop hydronic heating and chilled water systems.
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Durable Construction
Features a heavy-duty butyl rubber diaphragm that permanently separates air and water, with a steel shell built to ASME Section VIII, Division 1 standards.
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High Capacity & Performance
Rated for up to 125 PSIG and 240°F, suitable for small to medium heating installations and chilled water systems requiring reliable expansion management.
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Top Connection for Easy Integration
Includes a 1" top connection for convenient installation in most piping layouts.
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Non-Replaceable Diaphragm
The heavy-duty diaphragm is designed for long-term, maintenance-free operation
Q&A
Q: What is the Taco CX254-125 used for?
A: It is a vertical expansion diaphragm tank designed to absorb excess pressure in closed-loop heating or chilled water systems, protecting piping and equipment.
Q: What is the tank capacity?
A: The tank has a 67-gallon capacity, suitable for larger commercial or high-demand residential systems.
Q: How does the diaphragm tank work?
A: The internal diaphragm separates air from water, allowing the tank to absorb pressure fluctuations and prevent water hammer or overpressure conditions.
Q: What type of systems is it suitable for?
A: Ideal for hydronic heating, chilled water, and closed-loop HVAC systems requiring reliable pressure control.
Q: What material is it made from?
A: Constructed from durable steel with a corrosion-resistant coating and a high-quality internal diaphragm for long-term reliability.
Q: How is it installed?
A: It is a vertical tank designed for floor-mounted installation near the system’s pump or boiler.
Maintenance Tips
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Check the air charge pressure every 6–12 months and adjust to match system specifications.
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Inspect the diaphragm for leaks or signs of wear to prevent waterlogging and maintain efficiency.
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Flush the tank periodically to remove sediment and preserve tank capacity.
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Ensure all connections are secure and free from corrosion to prevent leaks.
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Schedule professional servicing if the tank shows reduced performance or unusual noises.
