Indirect solar heating expansion tanks

SWB-2LX

The SolarWave™ 2-liter / 0.53-gallon inline expansion tank is a compact and lightweight solution for managing thermal expansion in small-scale solar systems. It features a high-temperature butyl diaphragm and a patented stainless-steel water connection for reliable operation. The O-ring sealed air valve and replaceable tank base make it maintenance-free and easy to use.

Pre-charged to 1.9 bar / 28 psi and equipped with a 0.75" BSPT (c/w NPT) connection, this inline tank is perfect for solar closed-loop and hydronic heating circuits. Its durable carbon steel shell, protected by dual-layer polyurethane paint, ensures corrosion resistance and long-lasting performance.

  • Solar closed loop circuits
  • Hydronic heating circuits

MODEL NUMBER: SWB-2LX

Temp Max: 130°C / 266°F

Pressure Pre-charge bar: 1.9 bar / 28 psi

Nominal Volume: 2 Liter / 0.53 Gallon

Connection: 0.75" BSPT (M)

Color: White

Pressure Max: 10 bar / 150 psi

Diameter: 12.6 cm / 5 in

Features & Benefits

  • High-temperature butyl diaphragm
  • Patented stainless steel water connection
  • High expansion volume factor
  • Dual layer polyurethane paint finish
  • Leak-free O-ring sealed air valve
  • Replaceable tank base
  • Comprehensive testing
  • Maintenance-free

Product Certifications

CE

Europe

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EAC

Russia

Downloads

SELL SHEET SOLARWAVE EN

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Model number: HWB-2LX
HeatWave Tank - 2 liter / 0.53 gallon inline, 0.7 bar / 10 psi, 0.75" BSPT (c/w NPT) connection, Gray finish. Compact for small closed-loop systems.

TEMP MAX: 99°C / 210.2°F

PRESSURE PRE-CHARGE BAR: 0.7 bar / 10 psi

NOMINAL VOLUME: 2 Liter / 0.53 Gallon

CONNECTION: 0.75" BSPT (M)

COLOR: Gray

PRESSURE MAX: 6 bar / 87 psi

DIAMETER: 12.6 cm / 5 in

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SolarWave™ 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: 130°C / 266°F

PRESSURE PRE-CHARGE BAR: 1.9 bar / 28 psi

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