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Valve Types and Equivalents
    
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Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G
Triode
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/235G
Gas Filled Relay
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/236G
Gas Filled Relay
1955
3887 CV3524
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/237G
Gas Filled Relay
 
 
G1/235G XC18
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/370K
Gas Filled Relay
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/371G
Gas Filled Relay
 
 
CV2224 G1/370K
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1/371K
Gas Filled Relay
1955
B7G
CV2224
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G10H
Geiger-Muller Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G12
Photocell
 
 
CE4 GS116AM R58A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G125
Triode
1926
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G125A
Triode
1926
Peanut
4215A VT-5 Wecovalve
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G120/1B
Voltage Stabiliser
1945
B4
CV438
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G1404W
Rectifier HW
 
B4
1404
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G150/2D
Thyratron
1958
IO
CV413
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G15F
Photocell
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G16
Photocell
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G180/2G
Voltage Stabiliser
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G180/2M
Voltage Stabiliser
1958
B8B
CV395 G180/2D QS150/45
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G-24
Tetrode
1927
UY
124 G-24 UY-224 UY224
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G2018
Triode
1932
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G2080
Rectifier HW
1935
B5
UR1C
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G210
Triode
 
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G225
Triode
1926
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G240/2D
Thyratron
1949
IO
1267 CV2174
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G3412
Rectifier HW x 2
1934
B7
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G400/1K
Voltage Stabiliser
1958
B7G
CV2194
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G400/2G
Voltage Stabiliser
 
 
CV4048 CV6135
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G4120N
Rectifier FW
1934
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G5
Photocell
 
 
GS16WB
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G50/2G
Voltage Stabiliser
 
 
CV2208 G50/1G XC15
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G55/1K
Voltage Stabiliser
1956
B7G
CV5298 CV5880
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G75/3G
Voltage Stabiliser
 
 
CV4030
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G-51
Tetrode
1936
UY
35 51
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
G8
Photocell
 
 
3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GA16
Photocell
 
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GA50
Photocell
 
 
90AG CAG29
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
Gas-Tube
X-Ray Tube
1920
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10/2P
Counting Tube
 
B7G
CV8282
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10/4B
Counting Tube
 
IO
CV1739
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10/4B/L
Counting Tube
 
 
CV6100
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10B
Counting Tube
 
IO
CV2271 GC10B/S
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10B/L
Counting Tube (Long Life)
 
CV6044
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC10D
Counting Tube
 
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC16
Photocell
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GC860
Tetrode
 
 
VT17
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD10
Cold Cathode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD100A
Voltage Stabiliser
 
 
7475 CV188 QS92/10
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD108M
Voltage Stabiliser
1958
B7G
0B2 CV1833
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD150A/S
Voltage Stabiliser
1939
IO
0D3 150C3 CV216 VR150/30
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD150M
Voltage Stabiliser
 
 
0A2 150C2 CV1832 QS1207
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD150M/S
Voltage Stabiliser
 
B7G
0A2 CV1832
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD350X
Voltage Stabiliser
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD350y
Voltage Stabiliser
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD85WR
Voltage Stabiliser
1959
 
CV4516
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GD86W/S
Voltage Stabiliser
1954
CV2321
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GDT4
Thyratron
1935
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GDT4B
Thyratron
1937
B5
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GDT4C
Thyratron
 
 
CV1141 NGT1
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GE10
Diode
1957
IO
CV5109
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GE15371
Triode
1970
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GET2
Neon Indicator
 
 
CV743
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GET41/2
Neon Indicator
 
 
CV744
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GEX54/3
 
 
 
CV166
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GH2677
Barretter
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GI-7B
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK10
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK20
Thyratron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK3
Thyratron
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK32
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK33
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK40
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GK41
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL1
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL415
Ignitron
1946
 
5550 WL681/686
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL446
Triode
 
 
446 CV3725
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL446A
Triode
 
IO
446A CV932
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL464
Triode
 
 
CV3604
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL464B
Triode
 
 
464B CV3605
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL522
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL5556/PJ8
Triode
 
 
5556
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL5557
Thyratron
 
UX4
PL17 PL5557
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL5J29
Magnetron
1946
 
CV3606 CV3842
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL917
Photocell
 
 
917 CE11V GL917 NU11V R59TAV VS118TA
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL918
Photocell
1945
 
CV2692
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL920
Photocell
 
 
920 GL920 GS149
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL927
Photocell
 
 
3530 927 CE25 CMG34X GS47X
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL929
Photocell
 
 
929 GL929 VA16SO
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GL930
Photocell
 
 
930 CE30 GS16SO NU30 R61A R64A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GLOW-SWITCH
Cold Cathode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GMU2
Rectifier HW
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN-1
Numerical Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN-4A
Numerical Indicator
 
ZM1022
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN-4D
Numerical Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN-4P
Numerical Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN-5A
Numerical Indicator
 
CV5351
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN10
Thyratron
1958
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GN20
Thyratron
1955
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GNP-7
Nixie Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GNP-7AH
Nixie Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP
Triode
1925
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP2
Triode
1926
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP210
Triode
1928
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP407
Triode
1928
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP4VBE
Triode
1925
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GP607
Triode
1928
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GPDE
Triode
 
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GPR3
Triode
1929
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR10G
Counter/Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR10M
Counter/Indicator
 
B13B
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR150/DK
Voltage Stabiliser
1949
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR22-12
Voltage Stabiliser
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR26-16
Voltage Stabiliser
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR27-56
Voltage Stabiliser
 
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GR28-10
Voltage Stabiliser
1961
B7G
StR150/60
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GRD7
Triode
1959
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS-16A
Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS10C
Counter/Indicator
1959
CV2325
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS10C/S
Counter/Indicator
1959
CV2325
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS10D
Counter/Indicator
1959
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS116A
Photocell
 
 
NU4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS116AM
Photocell
 
 
CE4 G12 R58A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS117A
Photocell
 
 
4GC 814A CE2 NU2 R71A WL737
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS117ATA
Photocell
 
 
CE13 NU13 R71TA
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS118TA
Photocell
 
 
CE11 R59TA
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS126A
Photocell
 
 
CE7
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS12D
Counter/Indicator
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS146
Photocell
 
 
3554 4GSM 50CG 868 CE1 CMG32 G8 GS146 NU.1 PJ23 R59A WL735
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS149
Photocell
 
 
920 GL920 GS149
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS16
Photocell
 
B4
52CG CMG22 CV248
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS16SO
Photocell
 
 
930 CE30 GL930 NU30 R61A R64A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS16WB
Photocell
 
 
G5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS17
Photocell
 
 
3533 CMG17
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS18
Photocell
 
 
CMG25 CV242 CV1472
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS23
Photocell
 
 
921
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS26
Photocell
 
B4
CV1432
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS26T
Photocell
 
 
CMG8
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS34
Photocell
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS44
Photocell
 
 
CMG33
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS44X
Photocell
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS44Y
Photocell
 
 
CE36 NU36
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS46
Photocell
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS47
Photocell
 
 
GS47
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS47X
Photocell
 
 
3530 927 CE25 CMG34X GL927
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS49
Photocell
 
 
CMG28
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS50
Photocell
 
 
90CG CMG29
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GS56
Photocell
 
 
PE7B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT-6V6-R
Beam Tetrode
 
IO
6V6GT
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT1
Thyratron
 
 
CV2969
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT1A
Thyratron
 
 
CV1143 NGT4
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT1C
Thyratron
1937
B5
AN1 CV1128 NGT2 VGT128
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT1E
Tuning Indicator
 
 
CV530
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT25E
Triode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT3
Thyratron
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GT411
Thermocouple Vacuum Guage
 
IO
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTE120Y
Trigger Tube
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTE130T
Voltage Stabiliser
1962
B9A
CV2434
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTE175M
Trigger Tube
1964
B7G
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTR120A
Voltage Stabiliser
 
 
CV45 S130P
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTR150M/S
Voltage Stabiliser
 
B7G
150A2 CV287 QS95/10 V987B
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GTR150W
Voltage Stabiliser
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU1
Rectifier MV
1930
B4
CV1262 NU7 RG1-250
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU12
Rectifier HW
 
 
1000G 24/400A 2H/66 2V/400A 2XM/600A 357B 4017 866A 866 966 AG866A AH201 CV32 DCG4 DQ2 ESU866 RG3-250A TH5021B UE966 VE966A VH550A WL866A WT-210.0008 WT262
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU19
Double Beam Tetrode
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU20
Rectifier HW
1954
 
CV1435
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU21
Rectifier HW
1954
 
AH221 CV5 CV152 ESU200 RG4-1250
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU21SP
Rectifier HW
 
 
CV5
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU4GT
Rectifier FW
 
 
CV841
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU5
Rectifier MV
1936
B4
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU-50
Pentode
1971
LS50
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GU50
Rectifier MV
1940
B4
2V/301A AU6 CV1072 CV1626 CV2738 DCG1.5-250 ESU101 NU16 RG1-240A RG250/1000 VU72
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GX432
Noise Tube
 
CV10504
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU1
Rectifier HW
1956
UX4
2G402A 2H/28 3B28 5221 5V3B28 AX224 CV1835 DCX4/1000 DX2 ESU103 RR3-250 TH5221B UA025A VX580A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU2
Rectifier HW
1956
 
2G/472B 4B32 4H/32 AX230 CV2518 DCX4/5000 RR3-1250
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU3
Rectifier HW
1957
 
CV2399 RR3-1250A
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU4
Rectifier HW
1957
CV9006
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU5
Rectifier HW
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU50
Rectifier HW
 
 
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GXU52
Rectifier HW
 
 
CV338
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GY501
Rectifier HW
 
B9D
 
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ30
Rectifier FW
1940
IO
5Z4GT 5Z4G R52
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ31
Rectifier FW
 
 
5U4G U52
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ32
Rectifier FW
1946
IO
52KU 5AQ4 5V4G 5Z4G CV593
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ33
Rectifier FW
1954
IO
53KU CV378 CV5745 U54
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ34
Rectifier FW
1954
IO
5AR4 CV1377
Type
Structure
Date
Base
PDF
Sensibly equivalent to:
GZ37
Rectifier FW
1958
IO
53KU CV378
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