The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 123
ve, the pressure being equalized,and is much less expensive, and easier upheld, than the packed valve. In fig. 1, the piston is represented as descending in the cylinder,the vacuum being formed under the piston by the passage A throughthe valve towards the condenser, the steam being admitted above… … MM 7////////// lll/Z/fllf, /pm^ 17///■:). TiOjM//,
Architecture · Civil engineering · Science
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