Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

Taco CA140-125 CA Series 37 Gallon 20" Diameter Captive Air Bladder Expansion Tank

SKU
TACCA140

In Stock. Ships in 1-7 Business Days.

Click Here for Shipping Cost by Destination
Retail : $9,360.00 - $4773.6 =
$4,586.40 You Save (51%)

  • Max Temperature: 240°F

  • Working Pressure: 125 PSI

  • Capacity Gallons Exact: 37 Gallons

  • LoadMatch® Systems

  • Larger Systems

  • Heavy Duty

- +

  • Max Temperature: 240°F

  • Working Pressure: 125 PSI

  • Capacity Gallons Exact: 37 Gallons

  • LoadMatch® Systems

  • Larger Systems

  • Heavy Duty

main product photo

Product details

Taco CA140-125 CA Series 37 Gallon 20" Diameter Captive Air Bladder Expansion Tank

Taco CA Series Expansion Tanks are designed to solve a long time problem in the hydronics industry by utilizing a butyl rubber bladder to permanently separate the air charge from the system fluid in the expansion tank. In old style, non-bladder type tanks, the air to water interface allowed air to be absorbed back into the system fluid and carried to other parts of the system causing corrosion, inefficient balancing, pump capitation, air bound terminal units and waterlogged tanks. Proper sizing and location of air separation and air removal components can provide a stable, tight and closed hydronic system. In most properly sized “CA” systems, you can reduce the tank size by 80% compared to the old style, plain steel tanks.

Features

  • Designed, constructed and tested to ASME Section VIII, Div. 1 requirements.

  • Heavy Duty butyl rubber bladder

  • Full acceptance bladder design (field replaceable)

  • Carbon steel construction (SS system connection optional, SS construction optional)

  • All fabrication done in house

  • Computerized selections to ensure fast and easy design

  • National Board Registration

  • CRN registration (optional)

  • NSF/ANSI 61-G Certified and Listed (Optional)

Applications

  • LoadMatch® Systems

  • Commercial, Institutional, Industrial Hydronic Systems

  • Larger Systems

  • Systems where reliability and lower maintenance costs are important

  • Potable Water (optional)

Taco
See All Taco Products

Specification Sheet

Installation Manual
Basic Information
MPN ? Manufacturer Part Number CA140-125
UPC / GTIN 687752205381
Manufacturer Taco
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. CA Series
Dimensions and Measurements
Height (Inches) ? The vertical measurement from bottom to top, measured in inches. 40-1/8"
Dimensions ? Dimensions 1"
Weight ? Weight 0.99
Gallons 37 Gallons
Diameter 20"
More Like This
More from Taco
  1. Taco SFL-075P 3/4" Press Lead-Free Shut-Off Freedom Flange Kit
    Taco SFL-075P 3/4" Press Lead-Free Shut-Off Freedom Flange Kit
    Retail : $124.76 - $38.58 =
    $86.18 You Save (31%)
    Add to Compare
  2. Taco SD080080-5 8" Inlet X 8" Outlet Size Rear Strainer Pullout Flanged Suction Diffuser
    Taco SD080080-5 8" Inlet X 8" Outlet Size Rear Strainer Pullout Flanged Suction Diffuser
    Retail : $7,840.00 - $3998.4 =
    $3,841.60 You Save (51%)
    Add to Compare
  3. Taco Z100P2-2 Zone Sentry® 1" Press Connect Valve 2-Way Normally Closed
    Taco Z100P2-2 Zone Sentry® 1" Press Connect Valve 2-Way Normally Closed
    Retail : $300.80 - $94.48 =
    $206.32 You Save (31%)
    Add to Compare
  4. Taco Z050T2-3 Zone Sentry® 300 PSI 1/2" NPT Valve 2 Way Normally Closed
    Taco Z050T2-3 Zone Sentry® 300 PSI 1/2" NPT Valve 2 Way Normally Closed
    Retail : $217.62 - $68.67 =
    $148.95 You Save (32%)
    Add to Compare


By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.