Potable hot water expansion tanks

TWB-12LX

The ThermoWaveâ„¢ 12-liter / 3.17-gallon inline expansion tank is designed to manage thermal expansion in potable hot water systems efficiently. Its high-grade butyl diaphragm and virgin polypropylene liner ensure durability and safety for use with potable water. The patented stainless-steel water connection and leak-free O-ring sealed air valve provide maintenance-free reliability.

Pre-charged to 1.9 bar / 28 psi and equipped with a 0.75" BSPT (c/w NPT) connection, this inline tank prevents overpressure and conserves water and energy by temporarily absorbing expanded water. The robust carbon steel shell, finished with dual-layer polyurethane paint, offers superior resistance to corrosion and external wear, ensuring long-lasting performance.

  • Stored hot water
  • Open loop potable hot water circuits
  • Potable hot water systems

MODEL NUMBER: TWB-12LX

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

Features & Benefits

  • Leak-free O-ring sealed air valve
  • Dual layer polyurethane paint finish
  • High-grade butyl diaphragm design
  • Virgin polypropylene liner
  • Patented stainless steel water connection
  • Maintenance-free

Product Certifications

Downloads

SELL SHEET THERMOWAVE EN

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TWB-18LX

Water Movement: Potable Hot Water Expansion Tanks


Model number: TWB-18LX
ThermoWaveâ„¢ 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

TWB-24LX

Water Movement: Potable Hot Water Expansion Tanks


Model number: TWB-24LX
ThermoWaveâ„¢ 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

TWB-20LH

Water Movement: Potable Hot Water Expansion Tanks


Model number: TWB-20LH
ThermoWaveâ„¢ 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

TWB-24LH

Water Movement: Potable Hot Water Expansion Tanks


Model number: TWB-24LH
ThermoWaveâ„¢ 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