Rectifier valve which consists of a cylindrical glass tube with cylindrical metal pieces inside; the top of the glass tube has a cylindrical metal rod sticking out of it; the bottom of the glass tube has a rounded black plastic piece around a metal rod and two white porcelain pieces which allow it …
Rectifier valve which consists of a cylindrical glass tube with cylindrical metal pieces inside; the top of the glass tube has a cylindrical metal rod sticking out of it; the bottom of the glass tube has a rounded black plastic piece around a metal rod and two white porcelain pieces which allow it to be attached to something else.