User Guide

Powermite 599 MT Series Terminal Unit 2-way Valves Technical Instructions
Document Number 155-196P25
May 20, 2008
Siemens Building Technologies, Inc. Page 7
Table 7. Close-off Pressures for Electronic Actuators.
Action
Valve Size
Inch (mm)
SQS
psi (kPa)
SSC
psi (kPa)
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
95 (655) 95 (655)
1/2 2.5< Cv <4
(15) (2.15< Kvs <3.44)
50 (345) 50 (345)
3/4 (20)
NC
1 (25)
40 (276) 40 (276)
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
160 (1103) 120 (828)
1/2 2.5< Cv <4
(15) (2.15< Kvs <3.44)
85 (586) 65 (448)
3/4 (20)
NO
1 (25)
70 (482) 55 (379)
Table 8. Maximum Available Close-off Pressures for Pneumatic Actuators.
Action
Valve Size
Inch (mm)
2-inch Actuator
@ 0 psi (0 kPa)
(with 10 to 15 psi
valve)
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
95 (655)
1/2 2.5< Cv <4
(15) (2.15< Kvs <3.44)
50 (345)
3/4 (20
NC
1 (25)
40 (276)
@ 20 psi (103 kPa)
(with 3 to 8 psi
valve)
1/2 0.4< Cv <1.6
(15) (0.34< Kvs <1.37)
95 (655)
1/2
2.5< Cv <4
(15)
(2.15< Kvs <3.44)
45 (310)
3/4 (20)
NO
1 (25)
35 (241)