Siemens 599-01135 Technical Instructions - Page 4
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Technical Instructions
Document No. 155-199P25
October 24, 2005
Selection Example
See Figure 1.
Bottom port
Page 4
Figure 1. Water Capacity Graph.
Select a valve given:
Required flow = 20 gpm.
Desired pressure drop = 5 psi.
Choose a 1-inch (25 mm) valve, Cv 10.
Table 5. Close-off Pressures.
Action
Valve Size Inches (mm)
(15 mm, 0.34< Kvs <1.37)
NC
Upper port
(15 mm, 2.15< Kvs <3.44)
3/4" and 1" (20 mm and 25 mm)
(15 mm, 0.34< Kvs <1.37)
NO
(15 mm, 2.15< Kvs <3.44)
3/4" and 1" (20 mm and 25 mm)
1/2", 0.4< Cv <1.6
1/2", 2.5< Cv <4
1/2", 0.4< Cv <1.6
1/2", 2.5< Cv <4
SSB Actuator
psi (kPa)
70 (483)
40 (276)
30 (207)
25 (172)
15 (103)
10 (69)
Siemens Industry, Inc.