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175F-27855-10
27 | schneider-electric.com Selection Guide
January, 2019 tc © 2019 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Document Number: F-27086-14
Using Pipe Reducers with 2-Way Ball Valve Assemblies
a - Denotes a full port valve, without the characterized insert.
The following table provides estimated effective Cvs when using a 2-way valve assembly on the same or lager pipe size. Use
these estimated effective Cvs in place of the rated Cvs along with at least 6 valve size diameters of straight pipe upstream and 3
valve size diameters of straight pipe downstream of the valve body.
WARNING: Do not reduce the valve size to less than one-half the line size, as this may weaken the pipe reduction area.
Physical injury can result if the weakened piping fails.
Table-18. Estimated Effective Cv when Using Pipe Reducers with 2-Way Ball Valve Assemblies.
Valve
Size
in.
P
Code
C
v
Estimated Effective Cv (Kvs)
Pipe Size - inches (NPT)
1/2 ¾ 1 1¼ 1½ 2 2½ 3 4 5
1/2
01 0.38
0.38
(0.33)
0.38
(0.33)
0.38
(0.33)
- -
-
02 0.68
0.68
(0.59)
0.68
(0.59)
0.68
(0.59)
03 1.3
1.3
(1.12)
1.3
(1.12)
1.3
(1.12)
04 2.6
2.6
(2.24)
2.5
(2.16)
2.5
(2.16)
05 4.7
4.7
(4.06)
4.3
(3.71)
4.1
(3.54)
06 8.0 8.0 (6.9) 6.5 (5.6) 5.7 (4.9)
07 11.7
a
11.7
(10.1)
7.9 (6.8) 6.7 (5.8)
¾
11 0.31
-
0.31
(0.27)
0.31
(0.27)
0.31
(0.27)
0.31
(0.27)
12 0.63
0.63
(0.54)
0.63
(0.54)
0.63
(0.54)
0.63
(0.54)
13 1.2
1.2
(1.04)
1.2
(1.04)
1.2
(1.04)
1.2
(1.04)
14 2.5
2.5
(2.16)
2.5
(2.16)
2.5
(2.16)
2.5
(2.16)
15 4.3
4.3
(3.71)
4.3
(3.71)
4.2
(3.63)
4.2
(3.63)
16 10.1
10.1
(8.7)
9.6 (8.3) 9.1 (7.9)
8.8 (7.6)
17 14.7
a
14.7
(12.7)
7.1 (6.1) 6.5 (5.6) 6.2 (5.4)
18 28.6
a
28.6
(24.7)
21.1
(18.2)
17.1
(14.8)
15.4
(13.3)
28 | schneider-electric.com Selection Guide
January, 2019 tc © 2019 Schneider Electric. All rights reserved. All trademarks are owned by Schneider Electric Industries SAS or its affiliated companies.
Document Number: F-27086-14
Valve
Size
in.
P
Code
C
v
Estimated Effective Cv (Kvs)
Pipe Size - inches (NPT)
1/2 ¾ 1 1¼ 1½ 2 2½ 3 4 5
1
21 4.4
- -
4.4 (3.8) 4.4 (3.8) 4.4 (3.8) 4.4 (3.8)
-
-
-
-
22 9.0 9.0 (7.8) 8.9 (7.4) 8.8 (7.6) 8.7 (7.5)
23 15.3
15.3
(13.2)
14.9
(12.9)
14.4
(12.5)
13.8
(11.9)
24 26.1
26.1
(22.5)
24.4
(21.1)
22.4
(19.4)
20.3
(17.5)
25 28.4
a
28.4
(24.6)
26.2
(22.7)
23.8
(20.6)
21.4
(18.5)
26 43.9
a
43.9
(38.0)
36.8
(31.8)
31.0
(26.8)
26.1
(22.6)
27 54.2
a
54.2
(46.8)
42.3
(36.6)
34.1
(29.5)
27.9
(24.1)
1¼
41 4.4
-
4.4 (3.8) 4.4 (3.8) 4.4 (3.8) 4.4 (3.8)
42 8.3 8.3 (7.2) 8.3 (7.2) 8.2 (7.1) 8.2 (7.1)
43 14.9
14.9
(12.9)
14.8
(12.8)
14.5
(12.5)
14.3
(12.3)
44 36.5
36.5
(31.6)
35.0
(30.3)
31.5
(27.2)
29.6
(25.6)
45 41.1
a
41.1
(35.5)
39.0
(33.7)
34.3
(29.7)
31.9
(27.5)
46 102.3
a
102.3
(88.1)
79.1
(68.4)
53.3
(46.1)
45.5
(39.3)
1½
51 22.8
-
22.8
(19.7)
22.4
(19.4)
22.0
(19.0)
21.8
(18.9)
52 41.3
41.3
(35.7)
39.3
(33.9)
37.2
(32.1)
36.0
(31.1)
53 73.9
a
73.9
(63.9)
63.7
(55.1)
55.9
(48.4)
52.0
(45.0)
54 171.7
a
171.7
(148.5)
101.2
(87.5)
76.6
(66.3)
67.2
(58.0)
2
61 41.7
-
41.7
(36.1)
41.2
(35.6)
40.6
(35.1)
39.7
(34.3)
63 71.1
71.1
(61.4)
68.8
(59.5)
65.9
(57.0)
62.4
(53.9)
65 108.0
a
108.0
(93.4)
100.3
(86.8)
92.0
(79.6)
83.0
(71.8)
66 210.0
210.0
(181.7)
165.9
(143.5)
134.6
(116.4)
110.5
(95.6)
67 266.0
a
266.0
(229.7)
189.7
(164.1)
146.4
(126.6)
116.7
(100.8)
Estimated Effective Cv con’t
a - Denotes a full port valve, without the characterized insert.
VB-2000 Series Ball Valves
with SmartX Actuators
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies
8. VBB/VBS and VB-2000 Series
Ball Valve Assemblies