1
APEN0H-028CH33A0308
VC7900Series
ModulatingControl Valves
SPECIFICATIONDATA
General
TheVC7900SeriesModulatingControl Valves provide
precision flow control of hot or chilledwater in various
heating and coolingapplications.
TheVC hydronic valve consists of a valve body and
replaceable characterized cartridgeassembly.When used
with aHoneywell VC7900actuator, the valve provides
proportional flow inmodulating, diverting ormixing
applications. They aredesigned to provide sinusoidal
valve actuator travel, and therefore operate silently and
resist water hammer
.
TheVC7900 series valve actuator is usedwith any 0-10
Vdc or 2-10Vdc controller.
Specifications
SupplyVoltage
24Vac, 50/60Hz, Class 2 circuit
Label color code
Blue
Control Signal
Input voltage
0/2 to 10Vdc (actual 2 to 9Vdc )
Input impedance 47.5kΏ
Power Consumption
Max. 4Watts
(during valve position
change)
Note: Use 24V Class 2 transformer and provide 6 VA for
connectionwire sizing.
Maximumdutycycle
15%
Nominal Timing
opens in120 sec.@ 60Hz
Actual full stroke timing is 140 sec
Note: Timing is approximately 20% longer@50Hz
Electrical Termination
With integral 1meter (nominal 39’’)
leadwire cable
Temperature
Ambient Operating 0 to65
℃
(32 to150 ˚F)
Ambient
Storage
-40 to+65
℃
(-40 to 150 ˚F )
Atmosphere
Non-condensing, Non-corrosive,
Non-explosive
Fluid temperatures
1 to95
℃
(34 to203˚F)
PressureDifferential
Max. 4 bar (60 psi)
PressureRating:
Static: 20bar (300psi)
Burst: 100bar (1500psi)
ValveMaterial
Body Bronze
Cartridge Ryton
TM
andNoryl
TM
O-ring seal EPDM rubber
Stem Stainless steel
StemTravel
: 10mm (0.4 inches)
FlowCharacteristics
: Linear
