This product can be ordered in small quantities - due to its fragility - only by personal collection. For personal collection, please provide packaging material!
Suggested order is 5-10 pieces or a multiple of them, in this case it can be received and delivered in factory packaging.

Further information:

Mini vacuum tube

Perfectly suitable for experimentation, solar energy demonstrations, home-made ovens.

Empty vacuum tubes play an important role in the efficiency of the collector as they prevent heat loss and minimize heat conduction. Empty vacuum tubes create a vacuum-like environment to retain solar energy, as heat transfer in a vacuum is significantly less than in air or other media.

Vacuum tube solar collectors are often used in heating systems, water heaters, bathtubs, swimming pools or other heat-intensive applications. The spare empty vacuum tubes allow the solar energy to be efficiently stored and continuously supplied even in sunny weather or during less active periods of the day.

Spare vacuum tube, standard size
Diameter 58 mm
Length 500 mm

Only the glass tube, without insert.

Mini vacuum tube 58x500 mm Three Target coating. (vacuum tube. vacuum tube)

Small vacuum tube

Mini vacuum tube