
McVitie Weston valve collection, King valve, type K.6

King valve, type K.6, spherical glass envelope 1.6in diam on std American base type 009, (RMW/P54 - McVitie Weston number), by Workrite Manufacturing Company.
King valve, type K.6, spherical glass envelope 1.6in diam on std American base type 009, (RMW/P54 - McVitie Weston number), by Workrite Manufacturing Company.