ZDSN motorized adjustable valve with double seats is used together with PS series straight travel motorized actuator, no need to match servo amplifier. If there is input control sign (4－20mADC or 1－5VDC）and single phase power, it can work, adjusting the pressure, flow，temperature, hydraulic position etc. It is suitable for clean sites of not strict leakage and big differential pressure. Electronic motorized adjustable valve with double seats of Nantong China-Mining Cement Equipment Co. LTD is widely used in the automatic controlling system of generating plant, metallurgy, petroleum, chemical industry, light industry and environment protection etc.
Ⅰ、Valve body
Type：Straight casting valve
Nominal diameter：20－300mm
Nominal pressure：PN1.6 4.0 6.4MPa
Connection type：Flange is according to JB78－59 and JB79－59.
Material：HT200 ZG230—450 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti
Type：Straight casting valve
Nominal diameter：20－300mm
Nominal pressure：PN1.6 4.0 6.4MPa
Connection type：Flange is according to JB78－59 and JB79－59.
Material：HT200 ZG230—450 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti
Ⅱ、Upper valve cover
Normal temperature ：-20℃－+200℃
Scattering heat：-40℃－+450℃
Type of pressure cover：Bolt pressure
Filling material：Type V polyfluortetraethylene filling material, soft graphite, stainless steel wave pipe
Normal temperature ：-20℃－+200℃
Scattering heat：-40℃－+450℃
Type of pressure cover：Bolt pressure
Filling material：Type V polyfluortetraethylene filling material, soft graphite, stainless steel wave pipe
Ⅲ. Parts in valve
Type of valve core：Double-direction piston valve core with single seat
Type of valve core：Double-direction piston valve core with single seat
Flow character：Equal percentage, linear and quick opening
Material：1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
Ⅳ、Actuator
Type：Select PS、3810 series electronic straight travel actuator.
The series 3810 is the type of anti-explosion is selected 3810 series.
Technical parameter and capacity：Please refer to the operation manual of the relevant actuator and locator of valve.
Ⅴ、Suggested temperature range of main parts material
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Material of valve body
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Nominal pressure
(MPa)
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Media work temperature(℃)
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|||||||||||||||
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<
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<
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<
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<
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<
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<
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<
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<
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<
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<
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<
|
<
|
<
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<
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||||
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120
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200
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250
|
300
|
350
|
400
|
425
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450
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475
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500
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525
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550
|
575
|
600
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||||
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The Max. working pressure(MPa)
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|||||||||||||||||
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Casting iron HT200
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1.6
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1.6
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1.5
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|
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|
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||
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Casting steel ZG25
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4.0
6.4
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4.0
6.4
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3.7
5.9
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3.3
5.2
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3.0
4.7
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2.8
4.1
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2.3
3.7
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1.8
2.9
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|
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Stainless steel ZG1Cr18Ni9Ti
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4.0
6.4
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4.0
6.4
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3.0
4.4
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2.7
4.2
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2.4
4.0
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2.1
3.8
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1.9
3.5
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1.7
3.4
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1.4
3.2
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1.1
2.9
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0.8
2.6
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||
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4.0MPa
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－40℃~+200℃ ZG25 ZG1Cr18Ni9Ti
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－40℃~+450℃ ZG25 ZG1Cr18Ni9Ti
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6.4MPa
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－20℃~+200℃ ZG25 ZG1Cr18Ni9Ti
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－40℃~+450℃ ZG25 ZG1Cr18Ni9Ti
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Ⅵ、Main technical parameter
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Nominal diameter(DN)
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20
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25
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32
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40
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50
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65
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80
|
100
|
125
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150
|
200
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250
|
300
|
|
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Dia. Of valve seat
dn(mm)
|
20
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25
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32
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40
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50
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65
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80
|
100
|
125
|
150
|
200
|
250
|
300
|
|
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Rated flow factor(Kv)
|
|
10
|
16
|
25
|
40
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63
|
100
|
160
|
250
|
400
|
630
|
1000
|
1600
|
|
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Travel(mm)
|
10
|
16
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25
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40
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60
|
100
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Basic error(%)
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±1.0
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Return difference (%)
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1.0
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Dead area (%)
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1.0
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Starting and final point deviation(%)
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±2.5
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Rated travel deviation(%)
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2.5
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Allowable leakage rate(Q)
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Grade III 0.05% of Kv value according to the standard of GB4213－84.
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Adjustable range
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50:1
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Nominal pressure and media temperature and material of valve body
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1.6MPa
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Normal temperature－20℃~+200℃ Casting iron HT200
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4.0MPa
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Normal temperature－40℃~+200℃ Casting iron ZG25 Casting stainless steel ZG1Cr18Ni9Ti
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|||||||||||||
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Middle temperature －40℃~+450℃ Casting steel ZG25 Casting stainless steel ZG1Cr18Ni9Ti
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6.4MPa
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Normal temperature－20℃~+200℃ Casting steel ZG25 Casting stainless steel ZG1Cr18Ni9Ti
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|||||||||||||
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Middle temperature－40℃~+450℃ Casting steel ZG25 Casting stainless steel ZG1Cr18Ni9Ti
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Ⅶ、Allowable pressure difference
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Nominal diameter
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25
|
40
|
50
|
65
|
80
|
100
|
150
|
200
|
250
|
300
|
||
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Diameter of valve seat mm）
|
25
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32
|
40
|
50
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65
|
80
|
100
|
125
|
150
|
200
|
250
|
300
|
|
Actuator
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Allowable DPΔP（Mpa）
|
|||||||||||
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PSL202
|
6.4
|
6.4
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6.4
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5.10
|
|
|
|
|
|
|
|
|
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PSL204
|
|
|
|
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6.4
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6.4
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5.62
|
|
|
|
|
|
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PSL208
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|
|
|
|
|
|
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6.4
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5.31
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3.97
|
|
|
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PSL320
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|
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6.4
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4.14
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Ⅷ、Installation dimension and weight（ZDSN）
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Nominal diameter
DN（mm）
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L(mm)
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H1
mm
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H(mm)
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R
mm
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Weight(kg)
|
|||||
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PN(MPa)
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Normal temperature
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Middle temperature
|
1.6
MPa
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4.0 6.4Mpa
|
||||||
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1.6
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4.0
|
6.4
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Normal temperature
|
Middle temperature
|
||||||
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25
|
185
|
190
|
205
|
117
|
746
|
897
|
176
|
14
|
18
|
21
|
|
32
|
200
|
210
|
220
|
120
|
752
|
903
|
176
|
16
|
19
|
22
|
|
40
|
220
|
230
|
240
|
139
|
791
|
942
|
176
|
18
|
28
|
32
|
|
50
|
250
|
255
|
265
|
144
|
801
|
952
|
176
|
22
|
32
|
36
|
|
65
|
275
|
285
|
295
|
188
|
930
|
1081
|
176
|
53
|
57
|
65
|
|
80
|
305
|
310
|
325
|
208
|
960
|
1111
|
176
|
62
|
67
|
77
|
|
100
|
350
|
355
|
370
|
220
|
984
|
1135
|
176
|
86
|
97
|
108
|
|
125
|
410
|
425
|
440
|
270
|
1167
|
1382
|
225
|
98
|
118
|
135
|
|
150
|
450
|
460
|
475
|
280
|
1187
|
1402
|
225
|
160
|
178
|
198
|
|
200
|
550
|
560
|
570
|
320
|
1271
|
1486
|
225
|
294
|
328
|
358
|
|
250
|
670
|
740
|
750
|
440
|
1510
|
1725
|
225
|
|
|
|
|
300
|
770
|
805
|
820
|
502
|
1634
|
1849
|
225
|
|
|
|
Ⅸ、Type description
|
Z
|
D
|
S
|
P
|
40
|
P
|
G
|
|
Self
Control
valve
|
Type of actuator：
|
Movement
character：
|
Structure of valve：
|
Nominal pressure：
|
Material of valve body：
|
Temperature type：
|
|
|
D： PS series
|
S：Straight travel
|
P：Single seat
|
16：1.6MP
|
C：carbon steel
|
G：Middle temperature. normal temperature is omitted.
|
|
|
R： 3810 series
|
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N：Double-seat
|
40： 4.0MP
|
P：stainless steel. casting steel is omitted.
|
|
|
|
H：DKZ series
|
|
|
64： 6.4MP
|
|
|
|
|
C：other series
|
|
|
|
|
|
XI、Notes for order：
1.Type and name 2.Nominal diameter DN(mm) 3.Nominal pressure
4.Flow character 5.Material of valve body 6.Rated flow factor
7.Media type and temperature range 8.beginning and ending pressure of valve(Differential Pressure)
1.Type and name 2.Nominal diameter DN(mm) 3.Nominal pressure
4.Flow character 5.Material of valve body 6.Rated flow factor
7.Media type and temperature range 8.beginning and ending pressure of valve(Differential Pressure)
9.Power voltage and control signal 10.Other special requests.