## 0785

If any piston rods detract from the effective plunger area, their area should be added to A before determining D.

6. Using the total stroke St and the rated pressing stroke Sp, determine the geometric volumes Vt and Vp corresponding to these strokes.

7. Using a general compressibility curve, determine the compressibility c of the liquid between atmospheric pressure and rated operating pressure.

### 4. Select three cylinders.

Center cylinder T2 = 4000 tons (36 MN) Two side cylinders T1 = T3 = 1000 tons (8.9 MN) Operating all three cylinders: T = 6000 tons (53 MN) Operating center cylinder alone: 4000 tons (36 MN) Operating side cylinders alone: 2000 tons (18 MN)

5. A1 = A3 = 1 X 2400 = 400 in2 (1 X 15,500 = 2580 cm2) A2 = 6 X 2400 = 1600 in2 (4 X 15,500 = 10,300 cm2)

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