This tube is one of the very rare triple triode tubes. It might be interesting for designs that need to be optimized for a minimal number of tubes.
The 19EZ8's characteristics are nothing special except the fact that its plate resistance shows a small drop when la arger grid current is present. This was hard to fit with my generic i5 model, as one can see in the graphs. However, for most applications this is not of relevance...
The model is fitted to the most repesentative triode out of 12 Westinghouse samples, each burnt in for 100h.
19EZ8.WHi5 spice model