Somewhat above the bottom of the vat, a steam inlet pipe I enters, connected at its other end by a coupling i with a suitable steam generator (see Fig. [43]), Preferably the outlet of this pipe is screened by a perforated plate M so that it may not be clogged by the pulp. It is also best that a filling piece be placed at the junction of the bottom with the sides in order that there be no sharp corner from which the pulp may not be easily cleaned out.
Fig. 41.—Steaming Vat for Potatoes.
The bottom of the vat may either have a discharge door at the side as in Fig. [44] or at the bottom, as in Fig. [41].
An under side view of the latter construction is shown in Fig. [42]. The bottom of the vat is made in two parts or doors J K. These are held closed by a transverse bar L inserted at its end into a stirrup l′ and supported at its other end by a button l, or other means.
Fig. 42.—Bottom of Steaming Vat.