ThermoWave™

ThermoWave™ expansion tanks are the ideal solution for potable water heating systems. These tanks absorb the expanded water volume, avoiding the need for venting through relief valves, conserving water and energy. Constructed with high-grade materials, they keep your water clean and safe. ThermoWave tanks are rigorously tested for structural integrity, making them the best choice for expansion needs in potable water applications.

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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Inline

Tank Installation Orientation Vertical (1)

Horizontal (5)

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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-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-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-8LX

Model number: TWB-8LX

ThermoWave™ 8-liter / 2.11-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 small systems.

TEMP MAX: 90°C / 194°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

NOMINAL VOLUME: 8 Liter / 2.11 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Almond

PRESSURE MAX: 10 bar / 150 psi

DIAMETER: 20.2 cm / 7.9 in

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ThermoWave™

Filters

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

Water Movement: Potable Hot Water Expansion Tanks

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