User Guide

599 Series 2-Way Ball Valves Technical Instructions
Document Number 155-703P25
July 7, 2014
Siemens Industry, Inc. Page 9
NOTE: Use Table 11 to determine the effective Cv when using a full-port ball valve where the ball size and the
line sizes differ.
Table 11. Full-Port (No Flow Characterizer) Ball Valve Product Numbers and Flow Coefficients.
Valve
Line Size
in
Inches
(mm)
Valve
Product
Number
Effective (Installed) Cv (Kvs)
Supply Line Size in Inches (mm)
1/2
(13)
3/4
(20)
1
(25)
1-1/4
(32)
1-1/2
(38)
2
(51)
2-1/2
(63)
3
(76)
4
(102)
5
(127)
6
(152)
1/2 (15)
599-10307
599-10307S
10.00
(8.62)
6.94
(5.93)
6.19
(5.29)
— — — — — — — —
3/4 (20)
599-10311
599-10311S
—
25.00
(21.55)
18.66
(15.95)
15.35
(13.12)
— — — — — — —
1 (25)
599-10316
599-10316S
— —
63.00
(54.31)
39.78
(34.00)
33.56
(28.69)
— — — — — —
1-1/4 (32)
599-10321
599-10321S
— — —
100.00
(86.21)
69.19
(59.13)
51.45
(43.98)
— — — — —
1-1/2 (40)
599-10324
599-10324S
— — — —
63.00
(54.31)
55.34
(47.30)
51.00
(43.59)
— — — —
599-10326
599-10326S
— — — —
160.00
(137.93)
93.80
(80.17)
76.34
(65.25)
— — — —
2 (50)
599-10329
599-10329S
— — — — —
100.00
(86.21)
94.30
(80.60)
86.12
(73.61)
— — —
= Valve may be oversized.
= Optimal valve size.
= Valve may be undersized.
Operation
The parabolic shape of the flow characterizer orifice (Figure 2) provides a slowly
opening valve. Equal movements of the valve stem, at any point of the flow range,
change the existing flow an equal percentage regardless of the existing flow. The ball
valve equal percentage flow characteristic (Figure 3) mirrors the flow characteristic of a
coil, resulting in linear heat transfer.
Figure 2. Ball Valve Flow
Characterizer.
Figure 3. Ball Valve Equal Percentage
Flow Control.