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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1BN383LF Bell & Gossett WTA-456 ASME Domestic Well Tank
Bell & Gossett
$16,893.951BN383LF Bell & Gossett WTA-456 ASME Domestic Well Tank. Tank Volume Gallons: 422 (1600L). For Potable Well Water Systems. "WTA" Well Water Tanks (ASME Construction) Designed for Potable Well Water and Booster Pump Systems. Bell & Gossett...$16,893.95 -
1BN151LF Bell & Gossett WTA-401 ASME Domestic Well Tank
Bell & Gossett
$2,922.951BN151LF Bell & Gossett WTA-401 ASME Domestic Well Tank. Tank Volume Gallons: 18 (68L). For Potable Well Water Systems. "WTA" Well Water Tanks (ASME Construction) Designed for Potable Well Water and Booster Pump Systems. Bell & Gossett ASME...$2,922.95 -
116299 Bell & Gossett Series D-20 ASME Expansion Tank
Bell & Gossett
$1,852.95116299 Bell & Gossett Series D-20 ASME Expansion Tank. Tank Volume: 11 Gallons (41.3L). Series "D" (ASME) Pressurized Expansion Tanks Vertical. "Not For Potable Water Systems". Bell & Gossett Expansion Tank Information: Bell &...$1,852.95 -
113236 Bell & Gossett TPV-1SM Tank Purge Valve
Bell & Gossett
$108.95113236 Bell & Gossett TPV-1SM Tank Purge Valve. System Connection: 1" Female SWT - Tank Connection: 1" Female 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 -
113234 Bell & Gossett TPV-1SF Tank Purge Valve
Bell & Gossett
$108.95113234 Bell & Gossett TPV-1SF Tank Purge Valve. System Connection: 1" Female SWT - Tank Connection: 1" Female 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 -
116056 Bell & Gossett Series B-800 ASME Pressurized Expansion Tank
Bell & Gossett
$11,458.00116056 Bell & Gossett Series B-800 ASME Pressurized Expansion Tank. Tank And Acceptance Volume Gallons: 211 Gallons (800) liters. Repair Parts: 189584 Bell & Gossett Series B-800 ASME Expansion Tank Bladder Only Bell & Gossett...$11,458.00 -
116054 Bell & Gossett Series B-500 ASME Pressurized Expansion Tank
Bell & Gossett
$6,481.95116054 Bell & Gossett Series B-500 ASME Pressurized Expansion Tank. Tank And Acceptance Volume Gallons: 132 Gallons (500) liters. Repair Parts: 189582 Bell & Gossett Series B-500 ASME Expansion Tank Bladder Only Bell & Gossett...$6,481.95 -
116669 Bell & Gossett Compression Tank Model 135
Bell & Gossett
$2,251.00116669 Bell & Gossett Compression Tank Model 135. Capacity Gallons 135. Required 112013 Bell & Gossett Airtrol Tank Fitting ATF-24 OR 112014 Bell & Gossett ATFL Airtrol Tank Fitting Bell & Gossett ASME...$2,251.00 -
116667 Bell & Gossett Compression Tank Model 100
Bell & Gossett
$1,872.00116667 Bell & Gossett Compression Tank Model 100. Capacity Gallons 100. Required 112026 Bell & Gossett Airtrol Tank Fitting ATF-20 OR 112014 Bell & Gossett ATFL Airtrol Tank Fitting Bell & Gossett ASME...$1,872.00 -
116666 Bell & Gossett Compression Tank Model 80
Bell & Gossett
$1,522.00116666 Bell & Gossett Compression Tank Model 80. Capacity Gallons 80. Required 112026 Bell & Gossett Airtrol Tank Fitting ATF-20 Bell & Gossett ASME Compression Tanks Technical Brochure Bell & Gossett ASME Compression Tank...$1,522.00 -
116662 Bell & Gossett Compression Tank Model 24
Bell & Gossett
$1,124.00116662 Bell & Gossett Compression Tank Model 24. Capacity Gallons 24. Required 112010 Bell & Gossett Airtrol Tank Fitting ATF-12 Bell & Gossett ASME Compression Tanks Technical Brochure Bell & Gossett ASME Compression Tank...$1,124.00 -
113233 Bell & Gossett TPV-3/4FM Tank Purge Valve
Bell & Gossett
$94.50113233 Bell & Gossett TPV-3/4FM 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 -
113232 Bell & Gossett TPV-3/4SM Tank Purge Valve
Bell & Gossett
$94.50113232 Bell & Gossett TPV-3/4SM Tank Purge Valve. System Connection: 3/4" Female SWT - 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 -
116661 Bell & Gossett Compression Tank Model 15
Bell & Gossett
$1,098.00116661 Bell & Gossett Compression Tank Model 15. Information: Required 112010 Bell & Gossett Airtrol Tank Fitting ATF-12 Bell & Gossett ASME Compression Tanks Technical Brochure Bell & Gossett ASME Compression Tank Instruction...$1,098.00 -
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 -
1BN323LF Bell & Gossett PT-80V Expansion Tank
Bell & Gossett
$688.701BN323LF Bell & Gossett PT-80V 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...$688.70 -
1BN155LF Bell & Gossett WTA-405 ASME Domestic Well Tank
Bell & Gossett
$6,957.951BN155LF Bell & Gossett WTA-405 ASME Domestic Well Tank. Tank Volume Gallons: 90 (341L). For Potable Well Water Systems. "WTA" Well Water Tanks (ASME Construction) Designed for Potable Well Water and Booster Pump Systems. Bell & Gossett...$6,957.95 -
Wessels Series NLA-800L-HP 300psi Expansion Tank
Wessels
$12,670.00Wessels Series NLA-800L-HP 300psi Expansion Tank. Wessels bladder expansion tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system. A properly...$12,670.00 -
PAX30-150 Taco Expansion Tank Bladder Only 600-2065RP
Taco
$2,857.95PAX30-150 Taco Expansion Tank Bladder Only 600-2065RP 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...$2,857.95 -
2220805 Wessels Series NLA-800L Expansion Tank Bladder Only
Wessels
$6,957.952220805 Wessels Series NLA-800L Expansion Tank Bladder Only. Wessels bladder expansion tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system...$6,957.95 -
WX-85-L Armstrong Bladder Pre-Charged (ASME) Potable Water Expansion Tank
Armstrong
$4,621.95WX-85-L Armstrong Bladder Pre-Charged (ASME) Potable Water Expansion Tank. Tank Volume Gal/L: 23(87). Designed and constructed per ASME, section VIII, division 1. California code sight-glass available upon request. Allow a minimum of 18" (457mm)...$4,621.95 -
116513 Bell & Gossett B-85 LA SG ASME Bladder Expansion Tank
Bell & Gossett
$3,581.00116513 Bell & Gossett B-85 LA SG ASME Bladder Expansion Tank with Sight Glass. Tank And Acceptance Volume Gallons: 23 Gallons (85) liters. Bell & Gossett Expansion Tank Information: Bell & Gossett Series B ASME Expansion Tank...$3,581.00 -
600-2409RP Taco CA2000-125 Expansion Tank Bladder Only
Taco
$13,371.95600-2409RP Taco CA2000-125 Expansion Tank Bladder Only. Tank Volume: 528 Gal. 2000 Liter. Standard Design Pressure and Temperature: 125 psi @ 280*F Max. Information: Taco Series CA Expansion Tank Brochure Taco Series CA Expansion Tank...$13,371.95 -
9800220 Wessels Series NLA-1000 Expansion Tank Bladder Only
Wessels
$7,681.959800220 Wessels Series NLA-1000 Expansion Tank Bladder Only. Wessels bladder expansion tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system...$7,681.95 -
22011000 Wessels Series NLA-1000 Expansion Tank
Wessels
$9,843.9522011000 Wessels Series NLA-1000 Expansion Tank. Wessels bladder expansion tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system. A properly...$9,843.95 -
116531 Bell & Gossett Series D-200V ASME Expansion Tank
Bell & Gossett
$5,591.95116531 Bell & Gossett Series D-200V ASME Expansion Tank Vertical Mount. Tank Volume: 110.0 Gallons (416.4L). Series "D" (ASME) Pressurized Expansion Tank. "Not For Potable Water Systems". Bell & Gossett Expansion Tank Information: Bell...$5,591.95 -
2210500 Wessels FXA-NVA-500 Expansion Tank Bladder Only
Wessels
$3,408.952210500 Wessels FXA-NVA-500 Expansion Tank Bladder Only. Information: Wessels Series FXA Brochure Wessels patented FXA Tanks are ASME replaceable bladder type pre-charged hydro-pneumatic tanks for commercial and industrial well and water...$3,408.95 -
21010500 Wessels Series FXA-500 Expansion Tank
Wessels
$4,571.9521010500 Wessels Series FXA-500 Expansion Tank. Wessels patented FXA Tanks are ASME replaceable bladder type pre-charged hydro-pneumatic tanks for commercial and industrial well and water systems, booster systems, or other non-heated potable water...$4,571.95 -
573100-014 Armstrong A1400-L Expansion Tank
Armstrong
$11,483.95573100-014 Armstrong A1400-L Expansion Tank. Tank Volume Gal/L: 370(1400). 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...$11,483.95 -
On Sale
CA2500-125 Taco CA Expansion Tank
Taco
Now: $15,000.00Was: $21,634.00CA2500-125 Taco CA Expansion Tank. Tank Volume: 660 Gal. 2500 Liter. Standard Design Pressure and Temperature: 125 psi @ 280*F Max. Suitable for Vertical or Horizontal Installation. *Please note image is generic. Information: Taco Series CA...Now: $15,000.00Was: $21,634.00 -
21010300 Wessels Series FXA-300 Expansion Tank
Wessels
$3,861.9521010300 Wessels Series FXA-300 Expansion Tank. Wessels patented FXA Tanks are ASME replaceable bladder type pre-charged hydro-pneumatic tanks for commercial and industrial well and water systems, booster systems, or other non-heated potable water...$3,861.95 -
22010130 Wessels Series NLA-130 Expansion Tank
Wessels
$3,587.9522010130 Wessels Series NLA-130 Expansion Tank. Wessels bladder expansion tanks are required in a closed loop heating or chilled water HVAC system to absorb the expanding fluid and limit the pressure within a heating or cooling system. A properly...$3,587.95 -
PAX254-150P Taco Bladder Expansion Tank
Taco
$4,658.95PAX254-150P Taco Bladder Expansion Tank. Tank Volume: 67 gal, 254 liter. 150PSI (NSF-61 Rated). 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...$4,658.95 -
CA2000-125P Taco CA Expansion Tank
Taco
$19,127.00CA2000-125P Taco CA Expansion Tank 528 Gallon. Tank Volume: 528 Gal. 2000 Liter. Standard Design Pressure and Temperature: 125 psi @ 280*F Max, (NSF). Information: Taco Series CA Expansion Tank Brochure Taco Series CA Expansion Tank Instruction...$19,127.00 -
50-L Armstrong Expansion Tank 572006-197
Armstrong
$2,642.9550-L Armstrong Expansion Tank 572006-197. Tank Volume Gal/L: 13 (49). 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...$2,642.95 -
116072 Bell & Gossett Series B-400 ASME Expansion Tank w/Sight Glass
Bell & Gossett
$6,781.00116072 Bell & Gossett Series B-400 ASME Expansion Tank w/Sight Glass. Tank And Acceptance Volume Gallons: 106 Gallons (400) liters. Repair Parts: 189580 Bell & Gossett B-400 Expansion Tank Replacement Bladder Only Information: Bell...$6,781.00 -
B-1400 Bell & Gossett 116078 ASME Pressurized Expansion Tank W/Sight Glass
Bell & Gossett
$14,722.00B-1400 Bell & Gossett 116078 ASME Pressurized Expansion Tank W/Sight Glass. *Please note image is generic. Tank And Acceptance Volume Gallons: 370 Gallons (1400) liters. Bell & Gossett Expansion Tank Information: Bell & Gossett Series B...$14,722.00 -
CA800-125 Taco CA Expansion Tank Bladder Only 600-021RP
Taco
$6,691.00CA800-125 Taco CA Expansion Tank Bladder Only. 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...$6,691.00 -
PAX254-150 Taco Expansion Tank Bladder Only 600-2071RP
Taco
$2,873.95PAX254-150 Taco Expansion Tank Bladder Only 600-2071RP. Tank Volume: 67 gal, 254 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...$2,873.95 -
CA215-300P Taco CA Expansion Tank
Taco
$6,247.00CA215-300P Taco CA Expansion Tank. Tank Volume: 57 Gal. 215 Liter. Suitable for Vertical or Horizontal Installation. Information: Taco Series CA Expansion Tank Brochure Taco Series CA Expansion Tank Instruction Sheet Taco Series CA Expansion Tank...$6,247.00