Potable Hot Water Expansion Tanks

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Potable Hot Water Expansion Tanks

Protect your potable water heating system with GWS Potable Hot Water Expansion Tanks. These tanks absorb the expansion of heated water, preventing pressure-related damage and conserving energy. Constructed from high-quality materials, they ensure the safety and longevity of your system while maintaining water purity.

Disclaimer: The recommendations generated by this Tank Sizing Calculator are based on user-provided parameters and are intended for preliminary guidance only. Ultimate responsibility for the selection of appropriate tank size resides with the user. It is imperative to consult with your GWS representative or a certified professional for validation and advice in critical or complex applications, ensuring compliance with relevant standards and operational requirements.

Select the ideal pressure tank for any application - residential, commercial, or industrial. Our calculator provides tank size recommendations based on system needs to ensure optimal performance. Simply input your system type, pump start/stop pressure, flow rate, and minimum pump runtime, and the calculator will recommend the correct tank size for optimal system efficiency.

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Category ThermoWave™ (13)

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Water Movement: Potable Hot Water Expansion Tanks

TWB-35LX

Model number: TWB-35LX

ThermoWave™ 35-liter / 9.25-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Durable and maintenance-free.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 35 Liter / 9.25 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 31.8 cm / 12.5 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-4LX

Model number: TWB-4LX

ThermoWave™ 4-liter / 1.06-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Lightweight and efficient.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 4 Liter / 1.06 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 16.2 cm / 6.4 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-60LH

Model number: TWB-60LH

ThermoWave™ 60-liter / 15.85-gallon horizontal expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. High-capacity and durable.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 60 Liter / 15.85 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 38.9 cm / 15.3 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-60LV

Model number: TWB-60LV

ThermoWave™ 60-liter / 15.85-gallon vertical expansion tank with a 0.75" BSPT connection, pre-charged to 1.9 bar / 28 psi. Space-efficient and robust.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 60 Liter / 15.85 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 38.9 cm / 15.3 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-12LH

Model number: TWB-12LH

ThermoWave™ 12-liter / 3.17-gallon horizontal expansion tank with a 0.75" BSPT connection, pre-charged to 1.9 bar / 28 psi. Durable and space-efficient for small systems.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 12 Liter / 3.17 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 23 cm / 9.1 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-12LX

Model number: TWB-12LX

ThermoWave™ 12-liter / 3.17-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Compact and efficient for potable hot water systems.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 12 Liter / 3.17 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 23 cm / 9 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-18LX

Model number: TWB-18LX

ThermoWave™ 18-liter / 4.76-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Reliable and compact.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 18 Liter / 4.76 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 27.9 cm / 11 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-2LX

Model number: TWB-2LX

ThermoWave™ 2-liter / 0.53-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Compact and efficient.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 2 Liter / 0.53 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 12.6 cm / 5 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-20LH

Model number: TWB-20LH

ThermoWave™ 20-liter / 5.28-gallon horizontal expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Space-saving and durable.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 20 Liter / 5.28 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 26.4 cm / 10.4 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-24LX

Model number: TWB-24LX

ThermoWave™ 24-liter / 6.34-gallon inline expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Compact and efficient for hot water systems.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 24 Liter / 6.34 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 29 cm / 11.4 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-24LH

Model number: TWB-24LH

ThermoWave™ 24-liter / 6.34-gallon horizontal expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Durable and space-efficient.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 24 Liter / 6.34 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 29.1 cm / 11.5 in

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Water Movement: Potable Hot Water Expansion Tanks

TWB-35LH

Model number: TWB-35LH

ThermoWave™ 35-liter / 9.25-gallon horizontal expansion tank with a 0.75" BSPT (c/w NPT) connection, pre-charged to 1.9 bar / 28 psi. Reliable and robust for large systems.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 35 Liter / 9.25 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 31.8 cm / 12.5 in

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