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AFT VFG 2 Danfoss - Self-acting temperature controller

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Model
AFT VFG 2
Manufacturer
Danfoss
Country
Denmark
Allowable working fluids
Water
Function
maintains the set temperature
Action
closes when the temperature increases
Working position
normally open
PN
40 / 25 / 16
Tmax (for water)
°C
Tmin (for water)
5 °C
Connection type
flanged
Body material
cast iron / steel
Tmax for temperature sensor
t +100 °C

Length of impulse tube
5 m
Kvs m³/h
dP= 0.0 kPa

technical
specifications
price

DN
mm 		Kvs
m³/h 		dPmax
bar 		L
mm 		Xp
°C 		Tc
seс 		dT
°C 		price
15 4.0
 16 130 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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20 6.3
 16 150 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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25 8.0
 16 160 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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32 16
 16 180 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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40 20
 16 200 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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50 32
 16 230 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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65 50
 16 290 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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80 80
 16 310 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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100 125
 15 350 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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125 160
 15 400 - 120 -20 - 50
20 - 90
40 - 110
60 - 130
110 - 180
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DN - nominal diameter, mm.

Тс - time constant, sec.

L - length along the pipeline axis, mm.

dT - range of temperatures maintained by the controller, °C.

dPmax - maximum pressure drop across the controller, bar.

Xp - proportional band corresponds to the temperature deviation in °C from the setpoint at which the valve of the controller will go to the extreme position.

Kvs - flow coefficient, corresponds to the water flow rate in m³/h at which the pressure drop across the controller will be 1 bar.

question : comment : feedback

where to notify about the reply. not published anywhere
Kvs
flow capacity
m³/hr
temperature
set
°C

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