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13989720218
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ZDLM electric fine small sleeve control valve
Hits：10398 Update time：2017-05-10
ZDLM electric fine small sleeve control valve to accept the instrument to adjust the DC current signal to change the flow of the media is controlled, so that the control process parameters remain at a given value. Widely used in electric power, metallurgy, chemical, petroleum, textile, pharmaceutical, paper and other industrial sectors of the production automation control. This series of products from the nominal diameter of 20 to 300mm, nominal pressure of 1.6,4.0,6.4MPa, accept the signal 0 ~ 10mA.DC or 4 ~ 20mA.DC, the use of temperature range from -40 ℃ ~ 450 ℃. One electric single-seat control valve for smaller pressure, medium viscosity or slightly particulate impurities occasions; electric sleeve control valve for large pressure and leakage of large occasions.
The main technical parameters are as follows:
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Nominal diameter DN (mm)
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20
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25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
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150
|
200
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250
|
300
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||||
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10
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12
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15
|
20
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Rated flow coefficient Kv
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straight line
|
1.8
|
2.8
|
4.4
|
6.9
|
11
|
17.6
|
27.5
|
44
|
69
|
110
|
176
|
275
|
440
|
690
|
1100
|
1760
|
|
Equal percentage
|
1.6
|
2.5
|
4
|
6.3
|
10
|
16
|
25
|
40
|
63
|
100
|
160
|
250
|
400
|
630
|
1000
|
1600
|
|
|
Rated stroke L (mm
|
10
|
16
|
25
|
40
|
60
|
100
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Nominal pressure PN (MPa)
|
1.6, 4.0, 6.4
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Inherent flow characteristics
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Straight line, equal percentage
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Inherently adjustable ratio R
|
50: 1
|
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Allow leakage
|
Single seat
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Hard seal: grade Ⅳ, soft seal: Ⅵ grade
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Sleeve
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Seal: Class II, soft seal: Ⅵ grade
|
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Operating temperature t (℃)
|
-20 to 200, -40 to 250, -40 to 450, and 60 to 450
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Signal range (mA.DC)
|
0 ~ 10,4 ~ 20
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voltage
|
220V, 50Hz
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Mode of action
|
Failure: all closed, fully open, self-locking bit
|
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The relevant structure is as follows:
