Expansion Tanks
![Bell & Gossett Expansion Tanks](https://cdn11.bigcommerce.com/s-lej68b8h/product_images/uploaded_images/bell-gossett-centrifugal-pumps-category.png)
![Armstrong Expansion Tanks](https://cdn11.bigcommerce.com/s-lej68b8h/product_images/uploaded_images/armstrong-centrifugal-pumps-category.png)
![Taco Comfort Solutions Expansion Tanks](https://cdn11.bigcommerce.com/s-lej68b8h/product_images/uploaded_images/taco-centrifugal-pumps-category.png)
We stock expansion tanks from Bell & Gossett, Armstrong, Taco HVAC, Wessels and more. Expansion Tanks are available with either bladders or diaphragms so that water and air are permanently separated. No absorption can take place at any point during the system cycle, and you avoid the problems of waterlogged tanks, air-bound terminal units, excessive corrosion, inefficient balancing and pump cavitations. Plain steel tanks are also available. Please give us a call and we can help you find the right expansion tank for your needs.
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116479 Bell & Gossett B85 ASME Bladder Expansion Tank
Bell & Gossett
$3,132.00116479 Bell & Gossett B85 ASME Bladder Expansion Tank. Tank And Acceptance Volume Gallons: 23 Gallons (85) liters. Bell & Gossett Expansion Tank Information: Bell & Gossett Series B ASME Expansion Tank Brochure Bell & Gossett Series...$3,132.00 -
PAX170-150P Taco Bladder Expansion Tank Potable Water
Taco
$4,117.00PAX170-150P Taco Bladder Expansion Tank Potable Water. Tank Volume: 45 gal, 170 liter. Taco PAX Series bladder type tanks provide permanent separation of air and water. All wetted components are built of FDA-approved materials. Available in 11...$4,117.00 -
CBX130-125B Taco CBX Vertical Bladder Expansion Tank W/Sight Glass
Taco
$4,852.95CBX130-125B Taco CBX Vertical Bladder Expansion Tank W/Sight Glass, 34 Gal. Tank Volume, Gal: 34, Liter: 130. *Vertical Installation Only. Taco CBX Expansion Tanks are bladder type tanks that provide permanent separation of air and...$4,852.95 -
573001-008 Armstrong A300-L Expansion Tank Replacement Bladder
Armstrong
$3,452.95573001-008 Armstrong A300-L Expansion Tank Replacement Bladder Only. Tank Volume Gal/L: 80(300). Armstrong Series L Bladder Expansion Tanks. Armstrong Expansion Tanks are designed to reduce tank sizes by up to 80% over standard designs. Expansion tanks...$3,452.95 -
572006-304 Armstrong AST-42 ASME Pre-Pressurized Expansion Tank
Armstrong
$3,157.95572006-304 Armstrong AST-42 ASME Pre-Pressurized Hydro-Pneumatic Expansion Tank. Volume Acceptance USGal (15.5) / Tank (22.0). Armstrong Expansion Tanks are designed to reduce tank sizes by up to 80% over standard designs. Expansion tanks use...$3,157.95 -
572005-102 Armstrong AX-100V Pre-charged ASME Expansion Tank
Armstrong
$3,789.00AX-100V Armstrong Pre-charged ASME Expansion Tank 572005-102. Tank Volume 60.0 gal, (227.1 L). *Please note image is generic. Armstrong Series AX & AX-V Diaphragm Tanks. Armstrong Expansion Tanks are designed to reduce tank sizes by up to...$3,789.00 -
CA450-125 Taco CA Expansion Tank
Taco
$5,581.00CA450-125 Taco CA Expansion Tank. Tank Volume: 119 Gal. 450 Liter. Standard Design Pressure and Temperature: 125 psi @ 240*F Max. Suitable for Vertical or Horizontal Installation. Information: Taco Series CA Expansion Tank Brochure Taco Series...$5,581.00 -
PS135-125 Taco PS Expansion Tank 135 Gal
Taco
$2,445.50PS135-125 Taco PS Expansion Tank 135 Gal. Capacity (Gal) 135. Specifications: Manufactured in Accordance with ASME Section VIII. Maximum working pressure - 125 PSIG (optional 150 PSIG, -150 in Model No.). Maximum Operating Temperature - 375*F. Taco...$2,445.50 -
PS120-125 Taco PS Expansion Tank 120 Gal
Taco
$2,461.95PS120-125 Taco PS Expansion Tank 120 Gal. Capacity (Gal) 120. Specifications: Manufactured in Accordance with ASME Section VIII. Maximum working pressure - 125 PSIG (optional 150 PSIG, -150 in Model No.). Maximum Operating Temperature - 375*F. Taco...$2,461.95 -
PS080-125 Taco PS Expansion Tank 80 Gal
Taco
$1,891.95PS080-125 Taco PS Expansion Tank 80 Gal. Capacity (Gal) 80. Specifications: Manufactured in Accordance with ASME Section VIII. Maximum working pressure - 125 PSIG (optional 150 PSIG, -150 in Model No.). Maximum Operating Temperature - 375*F. Taco...$1,891.95 -
CX170-125 Taco 45 Gal Diaphragm Expansion Tank
Taco
$3,284.95CX170-125 Taco 55 Gal Diaphragm Expansion Tank. Tank Volume: 45 Gal, 170 Lit. Taco Series CX Expansion Tanks. Most Taco Expansion Tanks are available with either bladders or diaphragms so that water and air are permanently separated. The Taco...$3,284.95 -
CBX15-125 Taco CBX Vertical Bladder Expansion Tank 4 Gal
Taco
$2,047.95CBX15-125 Taco CBX Vertical Bladder Expansion Tank 4 Gal. Tank Volume, Gal: 4, Liter: 15. *Vertical Installation Only. Taco CBX Expansion Tanks are bladder type tanks that provide permanent separation of air and water. Designed for use...$2,047.95 -
600-2072RP Taco PAX300-150 Expansion Tank Bladder Only
Taco
$4,867.00600-2072RP Taco PAX300-150 Expansion Tank Bladder Only. Tank Volume: 79 gal, 299 liter. Taco PAX Series bladder type tanks provide permanent separation of air and water. All wetted components are built of FDA-approved materials. Available in 11...$4,867.00 -
113237 Bell & Gossett TPV-1FM Tank Purge Valve
Bell & Gossett
$108.95113237 Bell & Gossett TPV-1FM Tank Purge Valve. System Connection: 1" Female NPT - Tank Connection: 1" Male NPT. The Bell & Gossett Tank Purge Valve (TPV) is a combination full port ball type isolation valve and drain valve used to connect the...$108.95 -
572018-006 Armstrong Diaphragm Expansion Tank SX-40V
Armstrong
$698.95572018-006 Armstrong Diaphragm Expansion Tank SX-40V. Tank Volume 21.2 gal, (80L). Information: Armstrong NON-ASME Diaphragm Expansion Tank Submittal Sheet Armstrong Series SX Diaphragm Expansion Tank Installation Operating...$698.95 -
572018-005 Armstrong Diaphragm Expansion Tank SX-30V
Armstrong
$538.95572018-005 Armstrong Diaphragm Expansion Tank SX-30V Tank Volume 15.8 gal, (60L). Information: Armstrong NON-ASME Diaphragm Expansion Tank Submittal Sheet Armstrong Series SX Diaphragm Expansion Tank Installation Operating...$538.95 -
572018-001 Armstrong Diaphragm Expansion Tank 15
Armstrong
$118.95572018-001 Armstrong Diaphragm Expansion Tank 15. Tank Volume 2.1 gal, (8L). Information: Armstrong NON-ASME Diaphragm Expansion Tank Submittal Sheet Armstrong Series SX Diaphragm Expansion Tank Installation Operating...$118.95 -
PTA-30V Bell & Gossett 1BN349LF ASME Potable Expansion Tank
Bell & Gossett
$2,758.95PTA-30V Bell & Gossett 1BN349LF Expansion Tank. Bell & Gossett Potable Water Diaphragm Expansion Tanks ASME (PTA) Information. Bell & Gossett ASME Expansion Tanks Series PTA Pre-Charged Tanks Technical Brochure Bell & Gossett...$2,758.95 -
1BN333 Bell & Gossett HFT-90V Expansion Tank
Bell & Gossett
$784.951BN333 Bell & Gossett HFT-90V Expansion Tank. Bell & Gossett Non-ASME Expansion Tanks Series HFT Pre-Charged Diaphragm Technical Brochure Bell & Gossett Diaphragm Expansion Tanks ASME And Non-Code Instruction Manual Bell & Gossett...$784.95 -
1BN325LF Bell & Gossett PT-210V Expansion Tank
Bell & Gossett
$882.951BN325LF Bell & Gossett PT-210V Expansion Tank. The Series PT expansion tank is designed to absorb the forces of expanding water and protect a potable water system from pressure build up. The FDA approved heavy duty butyl diaphragm with...$882.95 -
1BN321LF Bell & Gossett PT-42V Expansion Tank
Bell & Gossett
$384.951BN321LF Bell & Gossett PT-42V Expansion Tank. The Series PT expansion tank is designed to absorb the forces of expanding water and protect a potable water system from pressure build up. The FDA approved heavy duty butyl diaphragm with...$384.95 -
19010060 Wessels Series NTA-60 150# ASME Expansion Tank
Wessels
$1,794.9519010060 Wessels Series NTA-60 150# ASME Expansion Tank. Wessels NTA series are ASME fixed diaphragm type pre-charged HVAC expansion tanks. They are designed to absorb the expansion forces and control the pressure in heating / cooling systems. The...$1,794.95 -
116480 Bell & Gossett B100 ASME Bladder Expansion Tank
Bell & Gossett
$3,260.00116480 Bell & Gossett B100 ASME Bladder Expansion Tank. Tank And Acceptance Volume Gallons: 26 Gallons (100) liters. Bell & Gossett Expansion Tank Information: Bell & Gossett Series B ASME Expansion Tank Brochure Bell & Gossett...$3,260.00 -
116053 Bell & Gossett Series B-400 ASME Pressurized Expansion Tank
Bell & Gossett
$6,584.00116053 Bell & Gossett B-400 ASME Pressurized Expansion Tank. Tank And Acceptance Volume Gallons: 106 Gallons (400) liters. Repair Parts: 189580 Bell & Gossett B-400 Expansion Tank Replacement Bladder Only Information: Bell &...$6,584.00 -
JWTF63075 John Wood Tank Drainer Fitting Combo
John Wood
$196.00JWTF63075 John Wood Tank Drainer Fitting Combo. This Item Usually Ships The Same Day!$196.00 -
600-020RP Taco CA600-125 Expansion Tank Bladder Only
Taco
$4,983.95600-020RP Taco CA600-125 Expansion Tank Bladder Only. Tank Volume: 158 Gal. 600 Liter. Standard Design Pressure and Temperature: 125 psi @ 280*F Max. Suitable for Vertical or Horizontal Installation. Information: Taco Series CA Expansion Tank...$4,983.95 -
572018-008 Armstrong Diaphragm Expansion Tank SX-90V
Armstrong
$1,322.95572018-008 Armstrong Diaphragm Expansion Tank SX-90V. Tank Volume 52.9 gal, (200L). *Please note image is generic. Information: Armstrong NON-ASME Diaphragm Expansion Tank Submittal Sheet Armstrong Series SX Diaphragm Expansion Tank Installation...$1,322.95 -
113243 Bell & Gossett TPV-1.5FF Tank Purge Valve
Bell & Gossett
$254.95113243 Bell & Gossett TPV-1.5FF Tank Purge Valve, 2" female NPT System Connection x 2" Female NPT Tank Connection. Please note image is generic. The Bell & Gossett Tank Purge Valve (TPV) is a combination full port ball type isolation valve...$254.95 -
600-9643RP Taco CBX84-125 Expansion Tank Bladder Only
Taco
$1,828.95600-9643RP Taco CBX84-125 Expansion Tank Bladder Only. Tank Volume, Gal: 22, Liter: 84. *Vertical Installation Only. Taco CBX Expansion Tanks are bladder type tanks that provide permanent separation of air and water. Designed for use in...$1,828.95 -
600-025RP Taco CA1600-125 Expansion Tank Bladder Only
Taco
$10,548.90600-025RP Taco CA1600-125 Expansion Tank Bladder Only. Tank Volume: 422 Gal. 1600 Liter. Standard Design Pressure and Temperature: 125 psi @ 280*F Max. Suitable for Vertical or Horizontal Installation. Information: Taco Series CA Expansion Tank...$10,548.90 -
189580 Bell & Gossett Series B-300 ASME Expansion Tank Bladder Only
Bell & Gossett
$4,270.95189580 Bell & Gossett Series B-300 ASME Expansion Tank Bladder Only. Tank And Acceptance Volume Gallons & (Liters). 80 Gallons (300) Liters. Bell & Gossett Pre-charged Bladder & Diaphragm Tanks ASME (B,D,B-LA). Please Contact...$4,270.95 -
PAX300-150P Taco Bladder Expansion Tank For Potable Water
Taco
$6,173.00PAX300-150P Taco Bladder Expansion Tank For Potable Water. Tank Volume: 79 gal, 299 liter. Taco PAX Series bladder type tanks provide permanent separation of air and water. All wetted components are built of FDA-approved materials. Available in 11...$6,173.00 -
572006-306 Armstrong AST-80 ASME Pre-Pressurized Expansion Tank
Armstrong
$3,672.95572006-306 Armstrong AST-80 ASME Pre-Pressurized Hydro-Pneumatic Expansion Tank. Volume Acceptance USGal (15.5) / Tank (35.0). Armstrong Expansion Tanks are designed to reduce tank sizes by up to 80% over standard designs. Expansion tanks use...$3,672.95 -
572006-301 Armstrong AST-12 ASME Pre-Pressurized Expansion Tank
Armstrong
$1,971.95572006-301 Armstrong AST-12 ASME Pre-Pressurized Hydro-Pneumatic Expansion Tank. Volume Acceptance USGal (3.1) / Tank (5.0). Armstrong Expansion Tanks are designed to reduce tank sizes by up to 80% over standard designs. Expansion tanks use...$1,971.95 -
1BN158LF Bell & Gossett WTA-449 Domestic Well Tank
Bell & Gossett
$7,746.951BN158LF Bell & Gossett WTA-449 Domestic Well Tank. Tank Volume Gallons: 106 (400L). For Potable Well Water Systems. "WTA" Well Water Tanks (ASME Construction) Designed for Potable Well Water and Booster Pump Systems. Bell & Gossett ASME...$7,746.95 -
CA800-125 Taco CA Expansion Tank 211 Gallon
Taco
$9,311.00CA800-125 Taco CA Expansion Tank 211 Gallon. Tank Volume: 211 Gal. 800 Liter. Standard Design Pressure and Temperature: 125 psi @ 240*F Max. Suitable for Vertical or Horizontal Installation. Information: Taco Series CA Expansion Tank...$9,311.00 -
PAX42-150 Taco Expansion Tank Bladder Only 600-2066RP
Taco
$2,387.95PAX42-150 Taco Expansion Tank Bladder Only 600-2066RP. Acceptance Volume: 5 gal, 19 liter. Taco PAX Series bladder type tanks provide permanent separation of air and water. All wetted components are built of FDA-approved materials. Available in 11...$2,387.95 -
PS015-125 Taco PS Expansion Tank 15 Gal
Taco
$1,485.95PS015-125 Taco PS Expansion Tank. Capacity (Gal) 15. Specifications: Manufactured in Accordance with ASME Section VIII. Maximum working pressure - 125 PSIG (optional 150 PSIG, -150 in Model No.). Maximum Operating Temperature - 375*F. Taco Plain...$1,485.95 -
CX42-125 Taco 11 Gal Diaphragm Expansion Tank
Taco
$1,995.90CX42-125 Taco Diaphragm 11 Gal Expansion Tank. Tank Volume: 11 Gal, 42 Lit. Taco Series CX Expansion Tanks. Most Taco Expansion Tanks are available with either bladders or diaphragms so that water and air are permanently separated. The Taco...$1,995.90 -
CBX800-125 Taco CBX Vertical Bladder Expansion Tank 212 Gal
Taco
$10,978.95CBX800-125 Taco CBX Vertical Bladder Expansion Tank 212 Gal. Tank Volume, Gal: 212, Liter: 800. *Vertical Installation Only. Taco CBX Expansion Tanks are bladder type tanks that provide permanent separation of air and water. Designed for...$10,978.95