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220IPT

Sensibly equivalent to:
ARP14 CV1333 Z22
    
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The Cossor 220IPT is also the CV1333 previously called the ARP14. The latter being read as Army Receiving Pentide number 14. The 220IPT is a pre-war battery HF pentode for receiver use.
The the rear of the bulb is plain zinc paint.
The classic envelope is 39 mm in diameter, and excluding the B7 base pins is 94 mm tall.
References: Datasheet & 1043. Type 220IPT was first introduced in 1938.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
m
g1
-
h
h
k,g3
g2
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
2.0
0.21
150
80
-1
2.0
0.5
0.4M
1.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December19, 2013.
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