Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 216
Fio 194. Fig. 195. … Flo. 198. Fig. 197. FiO. 19a which prevents its bulginginto the holes in the seats,or sticking therein, and thusimpairing the suctibn anddischarge. Both sides, theupper as well as the lower,are made available for service.These qualities of stiffnessand flexibility combined, per-mit this valve to…
Hydraulic machinery · Pumping machinery
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