Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 238
as follows.The scat, A, is turned to slip into its place in the pump and ismade tight by a round rubber hydraulic packing, B, in a groovenear the bottom. A spindle or stud, C, in the center of thisseat supports and guides the valve, D, which is made tight bya leather seal, E. The rubber collar or… … Fio. 216. ing for the valve stem with fork, which spans the spindle, C, atone end and having the valve lever and pin, H, for operatingat the other end. The valve stem is made tight by a stuffing-box and gland as shown. The operation of this valve is sub-stantially as follows. At the beginning of…
Hydraulic machinery · Pumping machinery
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