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Bulletin 71.1:SR5

13

Table 7. Cv Coefcients for 3-inch (DN 80) Body (continued)

SPRING RANGE,

PSIG (bar)

SET PRESSURE,

PSIG (bar)

INLET PRESSURE,

PSIG (bar)

Cv AT % DROOP

3-inch (DN 80)

Elastomer Diaphragm Metal Diaphragm

10% 20% 30% 10% 20% 30%

10 to 25

(0,7 to 1,7)

10 (0,7)

25 (1,7) 8.43 12.71 17.90 6.27 8.80 10.95

50 (3,4) 6.93 10.49 14.69 4.68 7.09 8.36

15 (1,0)

25 (1,7) 10.67 16.78 24.05 7.28 10.12 14.69

50 (3,4) 9.26 14.70 19.36 5.90 7.72 11.36

25 (1,7)

50 (3,4) 13.92 21.21 25.93 7.51 10.34 15.45

75 (5,2) 9.70 17.12 21.37 6.06 9.99 14.30

15 to 50

(1,0 to 3,4)

15 (1,0)

25 (1,7) 10.53 14.23 18.72 6.48 9.43 12.40

50 (3,4) 7.14 10.68 15.02 5.73 7.79 10.59

75 (5,2) 6.68 10.00 12.99 5.49 7.29 9.87

100 (6,9) 6.61 9.75 11.63 5.19 6.86 9.23

125 (8,6) 6.53 9.49 10.84 4.88 6.46 8.64

25 (1,7)

50 (3,4) 9.50 16.34 21.67 7.70 9.87 13.71

75 (5,2) 8.80 14.00 18.77 6.30 9.15 13.30

100 (6,9) 7.82 12.62 16.66 5.66 8.88 12.49

125 (8,6) 7.02 11.24 14.95 5.31 8.64 11.59

50 (3,4)

75 (5,2) 15.49 22.85 28.52 7.82 13.73 19.79

100 (6,9) 12.66 20.10 25.01 7.68 12.79 18.92

125 (8,6) 11.51 18.19 23.26 7.28 12.06 17.63

150 (10) 10.81 16.67 21.45 6.87 11.46 16.30

25 to 75

(1,7 to 5,2)

25 (1,7)

50 (3,4) 8.93 15.32 21.23 7.25 10.80 14.66

75 (5,2) 7.29 12.62 17.15 5.96 9.48 13.02

100 (6,9) 7.12 11.51 15.13 5.34 8.80 11.95

125 (8,6) 7.33 10.85 13.83 5.07 8.32 11.08

150 (10) 7.28 10.31 12.86 4.97 7.96 10.37

50 (3,4)

75 (5,2) 13.39 20.76 26.00 7.72 13.23 18.78

100 (6,9) 11.10 18.55 24.11 7.71 11.82 17.60

125 (8,6) 10.99 17.03 22.02 7.21 11.43 16.56

150 (10) 10.38 15.91 20.19 6.69 11.26 15.57

175 (12) 9.69 15.17 18.93 6.40 11.02 14.75

75 (5,2)

100 (6,9) 14.97 21.94 28.10 8.91 15.33 22.96

125 (8,6) 12.68 21.25 26.29 8.42 14.21 21.98

150 (10) 11.63 20.26 24.93 7.85 13.33 20.53

175 (12) 11.00 18.91 23.64 7.99 12.88 18.61

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 35 36

Bulletin 71.1:SR5 1

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