prov:value
| - As shown in Fig. 2, the three way valve D is closed and the three way valve G open, so that steam, only, passes directly to the milk pipe,-communication with the acid receptacle As shown in Fig. 3, the valve D is closed andi-he valve G, so positioned as to direct the steam into the'receptacle O, and, after passing through the acid or other agent contained in the receptacle C, it escapes through th
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