Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 291
in the larger sizes and up-wards is accomplished by means of suitable valves calledcushion valves. In the smaller sizes sufficient cushioning isdone by exhaust steam passing from the clearance space nextthe head through a small hole drilled into the main steam port. To set the valve of this pump it… … Fig. 257. The Foster single cylinder pump valve motion is a compoundvalve piston and slide valve in one piece and performs the office The Steam Pump. 293 of both a main and auxiliary valve. It seats over the mainsteam cylinder on the web or casting connecting together thevalve pistons, and is…
Hydraulic machinery · Pumping machinery
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