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ManualsBrandsSiemens ManualsControl Valves1/2" F x F 2-Way N/O Equal Percentage Electronic Actuator, 3-8 psi, 1.0 Cv
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Flowrite 599 Series Two-Way Valves Technical Instructions
Document Number 155-184P25
July 23, 2008
Siemens Building Technologies, Inc. Page 9
Table 8. Maximum Available Close-off Pressures for Pneumatic Actuators, Action, Upper Port.
10 to 15 psi (69 to 103 kPa) spring range
4-inch Actuator 8-inch Actuator 12-inch Actuator
Valve Size
Inch (mm)
0 psi (0 kPa) 0 psi (0 kPa) 0 psi (0 kPa)
1/2 (15) 236 (1627) 250 (1724) —
3/4 (20) 155 (1069) 250 (1724) —
1 (25) 91 (627) 250 (1724) 250 (1724)
1-1/4 (32) 52 (359) 148 (1020) 250 (1724)
1-1/2 (40) 32 (331) 92 (634) 250 (1724)
NC (Upper port)
2 (50) 20 (138) 55 (379) 185 (1275)
Table 9. Maximum Available Close-off Pressures for Pneumatic Actuators, Action, Bottom Port.
3 to 8 psi (21 to 55 kPa) spring range
4-inch Actuator 8-inch Actuator 12-inch Actuator
Valve Size
Inch (mm)
15 psi (103 kPa) 15 psi (103 kPa) 30 psi (207 kPa) 15 psi (103 kPa) 30 psI(207kPa)
1/2 (15) 142 (979) 250 (1724)
250 (1724) — —
3/4 (20) 80 (552) 231 (1593)
250 (1724) — —
1 (25) 52 (359) 150 (1034)
250 (1724) 250 (1724) 250 (1724)
1-1/4 (32) 32 (221) 93 (641)
250 (1724) 250 (1724) 250 (1724)
1-1/2 (40) 20 (138) 60 (414) 198 (1365) 205 (1413) 250 (1724)
NO (Bottom Port)
2 (50) 12 (83) 37 (255) 123 (848) 130 (896) 250 (1724)
Table 10. Close-off Pressures for Electronic Actuators.
SKB SKD SQX
El/Mech
Low Force
Rack &
Pinion Valve
Action
Valve
Size
Inches
(mm)
psi (kPa) psi (kPa) psi (kPa) psi (kPa)
psi (kPa)
.50 (15) 250 (1724) 250 (1724) 250 (1724) 250 (1724) 250 (1724)
.75 (20) 250 (1724) 250 (1724) 221 (1524) 238 (1640) 250 (1724)
1.0 (25) 250 (1724) 203 (1400) 130 (896) 140 (965) 173 (1193)
1.25 (32) 250 (1724) 117 (807) 75 (517) 81 (558) 100 (690)
1.50 (40) 208 (1334) 73 (503) 46 (317) 50 (345) 61 (421)
NC
2.0 (50) 126 (869) 44 (303) 28 (193) 31 (214) 37 (255)
.50 (15) 250 (1724) 250 (1724) 250 (1724) 250 (1724) 250 (1724)
.75 (20) 250 (1724) 250 (1724) 173 (1193) 186 (1282) 231 (1593)
1.0 (25) 250 (1724) 201 (1386) 112 (772) 121 (834) 149 (1028)
1.25 (32) 250 (1724) 124 (855) 69 (476) 75 (517) 92 (634)
1.50 (40) 250 (1724) 80 (552) 44 (303) 48 (331) 59 (407)
NO
2.0 (50) 201 (1386) 49 (338) 27 (186) 30 (207) 36 (248)