Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 297
twhen steam is turned on, as there is always a connectioneither directly from the steam inlet to one of the steam ports,or, if the main valve has covered both steam ports, it is in aposition to connect the auxiliary cavity in the main valve seatwith the main exhaust, which at once releases the… … FiQ 363. The Steam Pump. 299 Thus it is seen that the piston cannot get into a positionwhere it is impossible for it to respond to the steam pressure. To set tJic valve place the piston in the mid-stroke positionand set the auxiliary valve with rocker arm plumb, andthe preliminary valve covering…
Hydraulic machinery · Pumping machinery
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