Indirect solar heating expansion tanks

SWB-12LX

The SolarWave™ 12-liter / 3.17-gallon inline expansion tank is designed for solar heating systems to manage the expansion and contraction of thermal transfer fluids. Featuring a high-temperature butyl diaphragm and a patented stainless-steel water connection, this tank ensures optimal system performance even under extreme conditions. The leak-free O-ring sealed air valve and replaceable tank base provide maintenance-free reliability.

Pre-charged to 1.9 bar / 28 psi and equipped with a 0.75" BSPT (c/w NPT) connection, this compact inline tank is perfect for solar closed-loop circuits or hydronic heating systems. Its carbon steel shell with dual-layer polyurethane paint finish offers excellent durability and corrosion resistance, ensuring long-lasting operation in high-temperature environments.

  • Solar closed loop circuits
  • Hydronic heating circuits

MODEL NUMBER: SWB-12LX

Temp Max: 130°C / 266°F

Pressure Pre-charge bar: 1.9 bar / 28 psi

Nominal Volume: 12 Liter / 3.17 Gallon

Connection: 0.75" BSPT (M)

Color: White

Pressure Max: 10 bar / 150 psi

Diameter: 23 cm / 9.1 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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HeatWave Tank - 12 liter / 3.17 gallon inline, 0.7 bar / 10 psi, 0.75" BSPT (c/w NPT) connection, Gray finish. Compact and reliable for closed-loop heating systems.

TEMP MAX: 99°C / 210.2°F

PRESSURE PRE-CHARGE BAR: 0.7 bar / 10 psi

NOMINAL VOLUME: 12 Liter / 3.17 Gallon

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DIAMETER: 23 cm / 9.1 in

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