Vacuum Discharge Tube (Pohl Type)

Demonstrates how pressure affects the glow inside a gas discharge tube. The thick-walled glass tube has a central suction pipe with a GJ 19/26 joint, and disc electrodes on metal caps at both ends supply the high voltage. A metal coupling piece with a DN 16 flange and a ventilation valve completes the assembly. Dimensions: L ≈ 650 mm, D = 36 mm.