Top 8 Boiler Expansion Tank – Water Heater Replacement Parts

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1. Amtrol

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Amtrol T-5 THERM-X-SPAN Expansion Tank

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Amtrol #ad - Prevents the relief valve from going off. Protects the water heater and Plumbing Fixtures from premauture failure. Prevents a dangerous pressure build-up in the system. Eliminates the waste of energy and water, thus saving money.
BrandAmtrol #ad
ManufacturerAPR Supply Co. #ad
Height8.3 Inches
Length13.5 Inches
Weight0 Pounds
Width8.4 Inches
Part NumberAX-120V
ModelT-5

2. Amtrol

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AMTROL ST-5 Thermal Expansion Tank

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Amtrol #ad - Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge. Accepts expanded water caused by thermal expansion. Protects water heater, appliances and fixtures. Returns water to the system when hot water is used. Returns water to the system when hot water is used. Prevents the relief valve from going off. Inline thermal expansion tank. Accepts expanded water caused by thermal expansion.
BrandAmtrol #ad
ManufacturerAMTROL #ad
Height13 Inches
Length8 Inches
Weight4.6 Pounds
Width8 Inches
Part NumberST-5
ModelST-5

3. Amtrol

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Amtrol ST-12 Thermal Expansion Tank

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Amtrol #ad - Eliminates the waste of energy and water, thus saving money. Prevents the relief valve from going off. Protects the water heater and plumbing fixtures from premauture failure. Eliminates the waste of energy and water, thus saving money. Prevents a dangerous pressure build-up in the system.
BrandAmtrol #ad
ManufacturerAMTROL #ad
Height15 Inches
Length8 Inches
Weight4 Pounds
Width11 Inches
Part NumberST-12
ModelST-12

4. Taco

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Taco 400-4 1/8-Inch-NPT Float Air Hy-Vent

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Taco #ad - The taco 400 hy-vent can be opened top is threaded on and cleaned. Maximum temperature 240F. Sturdy Brass Construction. Maximum pressure 150 psi. Designed for use on hot water radiators, convectors, radiant panels, baseboards, and small unit heaters with a maximum working pressure of 150 psi.
BrandTaco #ad
ManufacturerTaco #ad
Height3.25 Inches
Length2 Inches
Weight0.11 Pounds
Width2 Inches
Part Number400-5
Model400-4

5. HIGHCRAFT

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Gray, HIGHCRAFT GUI37 Hydronic Expansion Tank for Heating System Carbon Steel Grey Holds 2.1 Gal, 2.1 Gallons

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HIGHCRAFT #ad - Low profile tank design with full Membrane Depth Eliminates Stretching of Diaphragm, Providing Increased Life Cycle. Max operating pressure 75 PSI; Temperature 210°F. Features a solid carbon steel construction with an exclusive Polypropylene Liner, MIG Welding, SBR Rubber Diaphragm, and External Baked Epoxy-Polyester Coating for Superior Performance. Each tank is factory Leak Tested and NSF61 Certified. Protects your heating systems; Prevents Dangerous Pressure Build up; Eliminates Potential Leak Path.
BrandHIGHCRAFT #ad
ManufacturerHighcraft #ad
Height13 Inches
Length9 Inches
Weight4.6 Pounds
Width9 Inches
Part NumberGUI37
ModelGUI37
Warranty1 Year

6. Amtrol

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Amtrol 110-1 Fill-Trol Expansion Tank

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Amtrol #ad - Product type: plumbing FIXTURE. Package height: 49. 275 cm. Package length: 27. 94 cm. Package width: 28. 702 cm.
BrandAmtrol #ad
ManufacturerAPR Supply Co. #ad
Height16 Inches
Length11 Inches
Weight12.9 Pounds
Width11 Inches
Part Number110-1
Model110-1

7. Honeywell

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Honeywell FM911 1/2" NPT Backflow Preventer

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Honeywell #ad - Built in check Valve. Fast fill feature. Pressure reducing valve 12 psi preset and backflow preventer vf06-100-susut and BP900 assembly. Brass.
BrandHoneywell #ad
ManufacturerHoneywell #ad
Height0 Inches
Length0 Inches
Weight5 Pounds
Width0 Inches
Part NumberFM911
ModelFM911

8. Falcon Stainless, Inc.

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Falcon Stainless EXPT-2 Thermal Potable Water Expansion Tank 2.1 Gal with Butyl Bladder/Polypropylene Liner and Stainless Steel 3/4-Inch Male Thread Connection for up to 50-Gallon Water Heaters

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Falcon Stainless, Inc. #ad - Steel clench ring regulates movement and prevents diaphragm from rubbing against tank wall. 16 gauge solid steel tank, finished with highest quality urothane paint. Falcon stainless e. T. 100% pressure tested and backed with a 5 year limited warranty. Stainless Steel water connection to reduce corrosion. Series thermal expansion tanks 100% effectively eliminate built up system pressure.
BrandFalcon Stainless, Inc. #ad
ManufacturerFalcon Stainless, Inc. #ad
Height12.75 Inches
Length8 Inches
Weight4.9 Pounds
Width8 Inches
Part Number989