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Ball segment valve - 5896 Tightness class Pressure and temperature rating
The tightness class is related to the chosen material in the seat ring.
(According to the material in the seat.) Seat Max. working pressure* (bar at °C) PTFE-seat (Code A) IEC 534-4 VI (ANSI B16-104 Class VI)PTFE 53-seat
1 Code 150 170 200 350 >350 (Code B) IEC 534-4 VI (ANSI B16-104 Class VI)HiCo seat (Code T) IEC 534-4 IV alt. V (ANSI B16-104 Class V) A 40 32 Note 1
1 B 40 32 15 Note 1 50% PTFE + 50% 316L powder (percentage by weight) T 40 32 25 15 Note 110 bar = 1 MPa Note: Check with Somas*
Flow characteristics
100% Flow
0 90° Opening angle NB! Do not exceed working pressure for the
valve.
Factor F
LP
Opening angle 10° 20° 30° 40° 50° 60° 70° 80° 90° F
LP1 0.85 0.82 0.78 0.75 0.70 0.66 0.60 0.55 0.50 F
LP2 0.85 0.82 0.78 0.73 0.68 0.62 0.56 0.50 0.45 F
LP3 0.85 0.82 0.78 0.73 0.67 0.61 0.54 0.49 0.43F
LP1 = One dimension bigger pipe sizeF
LP2 = Two dimensions bigger pipe sizeF
LP3 = Three dimensions bigger pipe size
Factor F
P
Valve Pipe Opening angle DN DN 10° 20° 30° 40° 50° 60° 70° 80° 90° 32 0.98 0.96 0.93 0.90 0.85 0.81 25 40 1.0 0.99 0.98 0.95 0.91 0.85 0.79 0.71 0.66 50 0.92 0.87 0.80 0.73 0.64 0.59 50 0.98 0.97 0.94 0.91 0.87 0.83 40 65 1.0 0.99 0.98 0.95 0.91 0.85 0.79 0.71 0.66 80 0.92 0.87 0.80 0.73 0.64 0.59 65 0.98 0.96 0.93 0.89 0.86 0.84 50 80 1.0 0.99 0.98 0.95 0.91 0.85 0.79 0.71 0.66 100 0.92 0.87 0.80 0.73 0.64 0.59 80 0.99 0.98 0.97 0.96 0.93 0.91
Liquid pressure recovery factor F
L Opening angle 65 100 1.0 0.99 0.98 0.95 0.91 0.85 0.79 0.73 0.64 125 0.92 0.87 0.80 0.73 0.64 0.59 Factor 10° 20° 30° 40° 50° 60° 70° 80° 90° F
L 0.85 0.82 0.80 0.77 0.74 0.71 0.67 0.64 0.60
Capacity factor K
V
and Resistance factor for ball segment valve type KVT/KVTF
Opening angle DN 10° 20° 30° 40° 50° 60° 70° 75 80° 90° 90° 25/2 0.003 0.013 0.031 0.053 0.085 0.12 0.16 0.18 25/3 0.003 0.014 0.035 0.067 0.12 0.18 0.26 0.29 25/5 0.014 0.055 0.13 0.23 0.39 0.56 0.72 0.8 25/7 0.05 0.24 0.44 0.6 0.8 1.05 1.3 1.6 25/10 0.2 0.75 1.6 2.2 2.8 3.25 4.05 4.25 25/15 0.21 0.9 1.8 2.8 3.8 5.7 8.1 9.9 25/20 0.21 0.95 2.0 4.3 6.8 9.5 13.9 20 25 1.7 4.3 7.5 11.3 15.4 20.4 25.7 32.8 38 0.43 40/32 1 3.3 6.9 12.9 19 25 35 48 40 4.3 11 19 29 39 53 66 84 96 0.44 50 6.8 17 30 45 61 82 103 131 150 0.44 65 9.8 25 43 65 87 113 139 171 191 0.78
Capacity factor K
V
and Resistance factor for ball segment valve type KVX/KVXF
Opening angle DN 10° 20° 30° 40° 50° 60° 70° 75 80° 90° 90° 25 1.1 3.3 6.1 9.7 13.6 18 23 31 35 0.51 40/32 1 3.1 5.9 11.5 17.2 22.5 32.5 47 40 2.7 8.4 15 25 35 46 60 80 91 0.49 50 4 13 25 39 54 72 94 124 140 0.51 65 6.4 19 35 55 77 99 126 162 180 0.88Relation between Kv and Cv: Kv = 0.86 Cv
