There is a laying it on the letter to keep the life out, or the trivialistic use.

This communication between the tank and pump is controlled by a float valve in the tanks and a cock in the pipe, while a poppet valve prevents the undrawn liquor going into the waste tank.

In cases where the acidity of the gastric contents is low, and also the ferment activity, I have found that frequently most of the ferment is present as renninogen and not as rennin.

Not for the first time, he reflected that it was not so much the speeches that strained the nerves as the palaver that went with them.