IÖ2 PACKING . an honr or two . It can then be removed and dressed to the required sliape . The presence of gritty matter in the water injuriously affects leather packing , and involves frequent … FlG - 8ft - pumps , and in leaving the suction valve always open . When the relief valve is lifted , at the top of the stroke of the accumulator ram , the pumps being always full of water , the accumulator cannot drop on to its bed . The pressure is in this way constantly kept on the leather ,…
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