Miniature Valves
Until the 70s, the miniature hot steam forged valves were manufactured in countless variants.
On exhibition here are two miniature valves with R1/2" male thread and R3/4" female thread. A male thread describes the external thread and a female thread the internal thread.
![Miniature Valve](/-/media/images/09_museum/05_ventile_sicherheitsventile/02_kleinventile_02.jpg)