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Bell & Gossett Tank Parts

Tank parts are replacement components used to maintain diaphragm expansion tanks and related hydronic system assemblies. These parts support repair and upkeep applications where proper pressure control, secure component fit, and dependable system integrity are important to preserving expansion tank performance and maintaining reliable long-term operation in heating and cooling systems.

Bell & Gossett Tank Parts
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Bell & Gossett 12" Tank Gasket 3-299-8-00-928-12
Bell & Gossett
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Bell & Gossett 12" Tank Gasket 3-299-8-00-928-12
$141.95 $165.00
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844-448-0880
Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN381LF, Wta 454 ASME Domestic Well Tank (317 Gal)
$28,291.95
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN360LF, PTA 449 ASME Potable Tank (106-106 Gal)
$10,164.95 $15,119.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN359LF, PTA 448 ASME Potable Tank (80-80 Gal)
$8,932.95 $13,287.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN358LF, PTA 447 ASME Potable Tank (53-53 Gal)
$7,623.95 $11,340.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN355LF, PTA 160 Volt ASME Potable Tank (70-47 Gal)
$5,687.95 $8,460.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett 1BN105LF, WT-405 Lead Free Water Tank
$3,656.95 $5,361.00
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844-448-0880
Bell & Gossett
Bell & Gossett
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Bell & Gossett 116513, B85 Series B ASME Bladder Tank (23 GAL) with Sight Glass
$7,749.95
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844-448-0880
Bell & Gossett
Bell & Gossett
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Bell & Gossett 116129, B400 Series B ASME Bladder Tank (106 GAL) 175 PSI
$20,922.95
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Bladder 189592
$21,409.95 $25,795.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Bladder 189593
$23,268.95 $28,034.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Bladder 189591
$15,042.95 $18,123.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Bladder 189596
$4,074.95 $4,909.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
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Bell & Gossett Bladder 189586
$8,068.95 $9,721.00
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844-448-0880
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Bell & Gossett
Bell & Gossett
In stock (1 unit)
Bell & Gossett Bladder 189579
$3,846.95 $4,634.00
In stock (1 unit)
Bell & Gossett 18" Tank Gasket (2-Pass) 47640
Bell & Gossett
Bell & Gossett 18" Tank Gasket (2-Pass) 47640
Discontinued
Bell & Gossett 20" Tank Gasket (4-Pass) T54880
Bell & Gossett
Bell & Gossett 20" Tank Gasket (4-Pass) T54880
Discontinued
Bell & Gossett 16" Tank Gasket (2-Pass) 3-299-8-00-928-16
Bell & Gossett
Bell & Gossett 16" Tank Gasket (2-Pass) 3-299-8-00-928-16
Discontinued
Bell & Gossett G87000 14" Tank Gasket (2-Pass) 3-299-8-00-928-14
Bell & Gossett
Bell & Gossett G87000 14" Tank Gasket (2-Pass) 3-299-8-00-928-14
Discontinued
Bell & Gossett 8" Tank Gasket 3-299-8-00-928-08
Bell & Gossett
In stock (1 unit)
Bell & Gossett 8" Tank Gasket 3-299-8-00-928-08
$96.95
In stock (1 unit)
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Bell & Gossett 10" Tank Gasket 3-299-8-00-928-10
Bell & Gossett
In stock (1 unit)
Bell & Gossett 10" Tank Gasket 3-299-8-00-928-10
$123.95 $144.00
In stock (1 unit)
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Bell & Gossett 6" Tank Gasket 3-299-8-00-928-06
Bell & Gossett
In stock (1 unit)
Bell & Gossett 6" Tank Gasket 3-299-8-00-928-06
$61.95 $72.00
In stock (1 unit)
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Bell & Gossett 4" Tank Gasket 3-299-8-00-928-04
Bell & Gossett
In stock (2 units)
Bell & Gossett 4" Tank Gasket 3-299-8-00-928-04
$48.95 $56.00
In stock (2 units)

From the Atoms & Bits Blog

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Bell & Gossett Expansion Tanks: Models Overview

Bell & Gossett Expansion Tanks: Models Overview

Published: May 21, 2026By: Lucas Gasparotto

Bell and Gossett expansion tanks help protect hydronic, plumbing, and well water systems from pressure problems caused by thermal expansion and pum...
Expansion Tanks vs. Buffer Tanks

Expansion Tanks vs. Buffer Tanks

Published: Feb 28, 2023By: Laura Eck

An expansion tank allows for the expansion and contraction of a system when it heats up and cools off and provides head pressure for the circulatio...
Expansion Tank vs. Pressure Tank

Expansion Tanks vs. Pressure Tanks

Published: Jan 25, 2023By: Laura Eck

Although very similar, pressure tanks and expansion tanks perform unique functions. Expansion tanks compensate for water expansion in closed-loop s...
Bladder Tanks vs. Diaphragm Tanks

Bladder Tanks vs. Diaphragm Tanks

Published: Nov 01, 2022By: Laura Eck

Bladder expansion tanks contain a balloon-like bladder that can be replaced when required. On the other hand, a diaphragm expansion tank includes a...
Bell & Gossett Expansion Tanks

Under Pressure: Bell & Gossett Expansion Tanks

Published: Jul 11, 2022By: Laura Eck

Bell & Gossett offers a wide selection of expansion tanks for proper system pressurization in hydronic heating and potable water (plumbing) sys...

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