The CV2224 is a gas filled trigger tube and functions in a similar way to a thyratron in that a control voltage at a critical level will initiate an ionization of the gas across the main gap and cause a rapid breakdown of the gap resistance.
The KB/F identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the F identifies the maker as STC, Paignton.
The commercial G1/371K and the STC logo are on the reverse.
The vertically stacked electrodes.
The thin glass tube envelope is 18 mm in diameter, and excluding the B7G base pins is 44 mm tall.
Reference: Data-sheet. Type CV2224 was first introduced in 1955. See also1955 adverts.
