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Selection Guide
© 2019 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies. February, 2019 tc
Document Number: F-27395-15
Using Pipe Reducers with Ball Valves
This table provides estimated effective Cvs when using pipe
reducers with ball valve assemblies. Use these estimated
effective Cvs in place of the rated Cvs when reducers or
increasers are located within 6 pipe diameters upstream and 3
pipe diameters downstream of the valve.
2-Way Valves
Valve Size
inch
Valve Body
Cv (Kv)
Estimated Effective Cv (Kv)
Pipe Size in Inches
NPT
Threaded
1/2 3/4 1 1-1/4 1-1/2
1/2
VBx2N00 0.3 (0.3) 0.3 (0.3) 0.3 (0.3) 0.3 (0.3)
– –
VBx2N01 0.7 (0.6) 0.7 (0.6) 0.7 (0.6) 0.7 (0.6)
VBx2N02 1.2 (1.0) 1.2 (1.0) 1.2 (1.0) 1.2 (1.0)
VBx2N03 2.1 (1.8) 2.1 (1.8) 2.1 (1.8) 2.1 (1.8)
VBx2N04 3.5 (3.0) 3.5 (3.0) 3.3 (2.8) 3.1 (2.7)
VBx2N05 4.7 (4.1) 4.7 (4.1) 4.4 (3.8) 4.1 (3.5)
VBx2N06 7.7 (6.7) 7.7 (6.7) 6.6 (5.7) 5.5 (4.8)
VBx2N07 10 (8.7) 10 (8.7) 8.5 (7.4) 7.0 (6.0)
3/4
VBx2N10 0.3 (0.3)
–
0.3 (0.3) 0.3 (0.3) 0.3 (0.3) 0.3 (0.3)
VBx2N11 0.7 (0.6) 0.7 (0.6) 0.7 (0.6) 0.7 (0.6) 0.7 (0.6)
VBx2N12 1.2 (1.0) 1.2 (1.0) 1.2 (1.0) 1.2 (1.0) 1.2 (1.0)
VBx2N13 2.1 (1.8) 2.1 (1.8) 2.1 (1.8) 2.1 (1.8) 2.1 (1.8)
VBx2N14 3.5 (3.0) 3.5 (3.0) 3.5 (3.0) 3.5 (3.0) 3.5 (3.0)
VBx2N15 4.7 (4.1) 4.7 (4.1) 4.6 (4.0) 4.5 (3.9) 4.4 (3.8)
VBx2N16 7.7 (6.7) 7.7 (6.7) 7.5 (6.5) 7.3 (6.3) 7.2 (6.2)
VBx2N17 10 (8.7) 10 (8.7) 9.5 (8.2) 9.0 (7.8) 7.2 (6.2)
3-Way Valves
Valve Size
in
Valve Body
Cv (Kv)
Estimated Effective Cv (Kv)
Pipe Size in Inches
NPT
Threaded
1/2 3/4 1 1-1/4 1-1/2
1/2
VBx3N00 0.3 (0.3) 0.3 (0.3) 0.3 (0.3) 0.3 (0.3)
– –
VBx3N01 0.6 (0.5) 0.6 (0.5) 0.6 (0.5) 0.6 (0.5)
VBx3N02 1.0 (.9) 1.0 (.9) 1.0 (.9) 1.0 (.9)
VBx3N03 2.0 (1.7) 2.0 (1.7) 2.0 (1.7) 2.0 (1.7)
VBx3N04 3.0 (2.6) 3.0 (2.6) 2.9 (2.5) 2.8 (2.4)
VBx3N05 4.5 (3.8) 4.5 (3.8) 4.2 (3.6) 3.9 (3.3)
VBx3N06 7.3 (6.2) 7.3 (6.2) 6.2 (5.3) 5.1 (4.4)
VBx3N07 10.0 (8.5) 10.0 (8.5) 8.5 (7.4) 7.0 (6.0)
3/4
VBx3N10 0.3 (0.3)
–
0.3 (0.3) 0.3 (0.3) 0.3 (0.3) 0.3 (0.3)
VBx3N11 0.6 (0.5) 0.6 (0.5) 0.6 (0.5) 0.6 (0.5) 0.6 (0.5)
VBx3N12 1.0 (.9) 1.0 (.85) 1.0 (.85) 1.0 (.9) 1.0 (.9)
VBx3N13 2.0 (1.7) 2.0 (1.7) 2.0 (1.7) 2.0 (1.7) 2.0 (1.7)
VBx3N14 3.0 (2.6) 3.0 (2.6) 3.0 (2.6) 2.9 (2.5) 2.9 (2.5)
VBx3N15 4.5 (3.8) 4.5 (3.8) 4.4 (3.8) 4.3 (3.7) 4.2 (3.6)
VBx3N16 7.3 (6.2) 7.3 (6.2) 7.1 (6.1) 6.9 (5.9) 6.8 (4.1)
VBx3N17 10.0 (8.5) 10.0 (8.5) 9.5 (8.2) 9.0 (7.8) 7.2 (6.2)
RISK OF PIPE FAILURE
• Do not use a valve sized less than one-half the pipe run size.
Erosion or wire draw may cause pipe failure in the reduction
area.
Failure to follow this instruction may result in death or
serious injury.
WARNING
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies