Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 362
r to suctionpipe. Pumps made with this form of cushion release, have given very satis-factory results, and if the ports arc properly located, there will be no re-bound of piston. c. Cushion valves must be alwaysprovided with hand-wheels marked as persketch, for the reason that very few men incharge… … Fig. 4 It is desirable that spindle or wheel be so formed thata monkey wrench can get a grip to open a jammed valve.Fig. 5 shows the stem flattened for this purpose. d. The valve and stem of cushion valvemust be in one piece without any swivel joint. Swivel joints are apt to come apart and make it…
Hydraulic machinery · Pumping machinery
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