Expansion Tanks
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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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 -
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
$1,582.9519010060 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...$1,582.95 -
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 -
PAX84-150P Taco Bladder Expansion Tank NSF 61
Taco
$3,454.00PAX84-150P Taco Bladder Expansion Tank NSF 61. Acceptance Volume: 12 gal, 45 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 models...$3,454.00 -
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 -
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 -
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
$3,475.95572006-306 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...$3,475.95 -
572006-304 Armstrong AST-42 ASME Pre-Pressurized Expansion Tank
Armstrong
$2,361.95572006-304 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...$2,361.95 -
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 -
CBX425-125 Taco CBX Vertical Bladder Expansion Tank 112 Gal
Taco
$6,358.95CBX425-125. Tank Volume, Gal: 112, Liter: 425. *Vertical Installation Only. Taco CBX Expansion Tanks are bladder type tanks that provide permanent separation of air and water. Designed for use in hydronic systems and non-potable,...$6,358.95 -
PAX425-150 Taco Bladder Expansion Tank
Taco
$5,271.95PAX425-150 Taco Bladder Expansion Tank. Tank Volume: 112 gal, 424 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 models to meet all...$5,271.95 -
573100-006 Armstrong A200-L Expansion Tank
Armstrong
$4,898.95573100-006 Armstrong A200-L Expansion Tank. Tank Volume Gal/L: 53(200). Armstrong Series L Bladder Expansion Tanks. Armstrong Expansion Tanks are designed to reduce tank sizes by up to 80% over standard designs. Expansion tanks use compressed air to...$4,898.95 -
1BN307LF Bell & Gossett WTX-20S Expansion Tank
Bell & Gossett
1BN307LF Bell & Gossett WTX-20S Expansion Tank. Vol/Tank Accept (gal) 20/11.4. The Series “WTX” tanks will help protect the pump and pressure switches against short cycling. The potable well tank delivers adequate water under...Qty in Cart: 0Quantity:Price:Subtotal: -
116308 Bell & Gossett Series D-240 ASME Expansion Tank
Bell & Gossett
$6,454.95116308 Bell & Gossett Series D-240 ASME Expansion Tank. Tank Volume: 132.0 Gallons (500.0L). Series "D" (ASME) Pressurized Expansion Tank. "Not For Potable Water Systems". Bell & Gossett Expansion Tank Information: Bell & Gossett...$6,454.95 -
116303 Bell & Gossett Series D-100 ASME Expansion Tank
Bell & Gossett
$3,560.95116303 Bell & Gossett Series D-100 ASME Expansion Tank. Tank Volume: 55.7 Gallons (211.8L). Series "D" (ASME) Pressurized Expansion Tank. "Not For Potable Water Systems". Bell & Gossett Expansion Tank Information: Bell & Gossett...$3,560.95 -
116301 Bell & Gossett Series D-60 ASME Expansion Tank
Bell & Gossett
$2,452.95116301 Bell & Gossett Series D-60 ASME Expansion Tank Tank Volume: 33.6 Gallons (127.2L). Series "D" (ASME) Pressurized Expansion Tank. "Not For Potable Water Systems". Bell & Gossett Expansion Tank Information: Bell & Gossett...$2,452.95 -
PTA-80V Bell & Gossett 1BN352LF ASME Potable Expansion Tank
Bell & Gossett
$4,258.95PTA-80V Bell & Gossett 1BN352LF ASME Potable Expansion Tank. The Bell & Gossett Series PTA expansion tank is an ASME constructed vessel designed to absorb the forces of expanding water and protect the domestic water system from pressure...$4,258.95 -
113231 Bell & Gossett TPV-3/4FF Tank Purge Valve
Bell & Gossett
$94.50113231 Bell & Gossett TPV-3/4FF Tank Purge Valve. System Connection: 3/4" Female NPT - Tank Connection: 3/4" Female NPT. The Bell & Gossett Tank Purge Valve (TPV) is a combination full port ball type isolation valve and drain valve used to...$94.50