Cavity Magnetron Valve
1940
Avo valve characteristic meter Mk. IV
Cockburn-MacNicoll Safety Valve, sectioned
Model Hopkinson-Ferranti Steam Valve
1912
TELEFUNKEN EL12
McVitie Weston valve collection, Telefunken AEG Raytheon valve, type RGN 1500
Wade Bequest collection of valves: Edison model 501 type IJB-1861 delay relay radio valve
WEHRMACHT BAL 1964
McVitie Weston valve collection, Royal Ediswan valve, type R
McVitie Weston valve collection, Westinghouse Radiotron valve, type VU71
Wade Bequest collection of valves: GEC Valve radio valve type U50
Wade Bequest collection of valves: Marconi-Osram Valve radio valve Type U52
McVitie Weston valve collection, STC valve, type CV25
1938
Wade Bequest collection of valves: Philips "Miniwatt" radio valve type KDD1
Mason patent steam pressure reducing valve, 1886
1886-1910
McVitie Weston valve collection, Loewe valve, type 3NFW
1932
McVitie Weston valve collection, Marconi Catkin valve, type MH4
circa 1933
Mazda 20P1
Wade Bequest collection of valves: Marconi-Osram Valve radio valve type X61M
Wade Bequest collection of valves: Mazda radio valve type ARP12
McVitie Weston valve collection, Hivac midget valve type XD
Wade Bequest collection of valves: Western Electric Type 357A
McVitie Weston valve collection, STC Klystron valve, type VX. 7136
circa 1955
CV125 gas filled cold cathode valve
Mazda valve, type 6P28
McVitie Weston valve collection, Mullard valve, type PM24D
1931
EL50 side contact valve
Chromium steel valve from a steam engine indicator by McInnes-Dobbie Limited
1888 (design date)
Wade Bequest collection of valves: Marconi-Osram Valve radio valve type Z63
Stentorphone valve
1912
Marconi phone DA60 60 watt directly heated audio output valve
1932
Ken-Rad IC7-G
'Holway' hot-cathode rectifying valve for x-ray use
1928-1932
Philips 13202X IM44
McVitie Weston valve collection, Marconi valve, type DA100
McVitie Weston valve collection, Philco valve, type 42E
1934
McVitie Weston valve collection, Loewe valve, type WG36
1937
Cossor 185 BT
Valve type 304H (Gammatron)
McVitie Weston valve collection, TeKaDe valve, type 4K170
McVitie Weston valve collection, Cossor Cathode Ray Tube valve, type 3232C
Wade Bequest collection of valves: four-electrode radio valve by Marconi-Osram
1920
McVitie Weston valve collection, Marconi WT Co., round valve, type N
circa 1913
McVitie Weston valve collection, Loewe valve, type WG36
1937
Telefunken triode valve
Early Pliotron Valve, designed by Dr. Langmuir
Experimental valve and seat
1912
Stentorphone valve
1912
Marconi V24 amplifying valve about 1920
1920
McVitie Weston valve collection, Lieben-Reisz Relay valve
1913