Electronic electric two-seat regulating valve
Electronic electric two-seat regulating valve

Electronic electric two-seat regulating valve

ZDSN type electric two-seat regulating valve is equipped with PS series and other straight stroke electric actuators. It does not need to be equipped with servo amplifier. It can be controlled by input control signal (4-20mADC or 1-5VDC) and single-phase power supply to realize the adjustment of pressure, flow rate, temperature, liquid level and other parameters. It is suitable for clean occasions with lax leakage requirements and large pressure difference. Electronic electric two-seat control valve can be widely used in electric power, metallurgy, petroleum, chemical, light industry, environmental protection and other industries in the industrial process automatic control system.

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數據1 數據2 數據3 數據4

Heavy machinery | Power station auxiliary equipment | Engineering general contracting | Mining machinery | Environmental protection equipment

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Electronic electric two-seat regulating valve

ZDSN type electric two-seat regulating valve is equipped with PS series and other straight stroke electric actuators. It does not need to be equipped with servo amplifier. It can be controlled by input control signal (4-20mADC or 1-5VDC) and single-phase power supply to realize the adjustment of pressure, flow rate, temperature, liquid level and other parameters. It is suitable for clean occasions with lax leakage requirements and large pressure difference. Electronic electric two-seat control valve can be widely used in electric power, metallurgy, petroleum, chemical, light industry, environmental protection and other industries in the industrial process automatic control system.

1. valve body
Form: Straight-through casting valve
Nominal diameter: 20-300mm
Nominal pressure: PN1.6 4.0 6.4MPa
Connection form: flange type JB79-59 by JB78-59
Material: HT200 ZG230-450 ZG1Cr18Ni9Ti ZG0Cr18Ni12Mo2Ti




 

2. upper valve cover
Normal temperature type:-20 ℃- 200 ℃
Heat dissipation type:-40 ℃- 450 ℃
Gland form: bolt compression type
Packing: V-shaped PTFE packing, flexible graphite, stainless steel bellows



 

3. valve inner assembly
Spool form: double guide single seat plunger spool
Flow characteristics: equal percentage characteristics, straight line characteristics and quick opening characteristics
Material: 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti


 

4. implementing agency

Type: optional PS, 3810 series electronic straight stroke actuator.
Explosion-proof type selection 3810 series
Technical parameters and performance: please refer to the corresponding actuator and valve positioner
Instructions.
 
5. main parts materials and recommend temperature range

Valve body material

Nominal pressure MPa

Medium working temperature ℃

< 

< 

< 

< 

< 

< 

< 

< 

< 

< 

< 

< 

< 

< 

120

200

250

300

350

400

425

450

475

500

525

550

575

600

Upper limit of working pressure MPa

Cast Iron HT200

1.6

1.6

1.5

 

 

 

 

 

 

 

 

 

 

 

 

Cast steel ZG25

4.0

6.4

 

 

4.0

6.4

3.7

5.9

3.3

5.2

3.0

4.7

2.8

4.1

2.3

3.7

1.8

2.9

 

 

 

 

 

 

Stainless Steel ZG1Cr18Ni9Ti

4.0

6.4

 

 

 

 

4.0

6.4

3.0

4.4

2.7

4.2

2.4

4.0

2.1

3.8

1.9

3.5

1.7

3.4

1.4

3.2

1.1

2.9

0.8

2.6


Main technical parameters of 6.

Nominal diameter DN

20

25

32

40

50

65

80

100

125

150

200

250

300

Valve seat diameter dn(mm)

20

25

32

40

50

65

80

100

125

150

200

250

300

Rated flow coefficient Kv

 

10

16

25

40

63

100

160

250

400

630

1000

1600

Stroke mm

10

16

25

40

60

100

Basic error%

±1.0

Return%

1.0

Dead Zone%

1.0

Always Point Deviation%

±2.5

Rated travel deviation%

2.5

Allowable leakage Q

0.05% of Class III Kv value as per GB4213-84 standard

Adjustable range

50:1

 

 

Nominal pressure

Medium temperature

Valve body material

1.6MPa

Normal temperature -20 ℃ ~ 200 ℃ cast iron HT200

4.0MPa

Normal temperature -40 ℃ ~ 200 ℃ cast steel ZG25 cast stainless steel ZG1Cr18Ni9Ti

Medium Temperature -40 ℃ ~ 450 ℃ Cast Steel ZG25 Cast Stainless Steel ZG1Cr18Ni9Ti

6.4MPa

Normal temperature -20 ℃ ~ 200 ℃ cast steel ZG25 cast stainless steel ZG1Cr18Ni9Ti

Medium Temperature -40 ℃ ~ 450 ℃ Cast Steel ZG25 Cast Stainless Steel ZG1Cr18Ni9Ti


Allowable 7. pressure difference

Nominal diameter

25

40

50

65

80

100

150

200

250

300

Seat diameter (mm)

25

32

40

50

65

80

100

125

150

200

250

300

implementing agency

Allowable pressure difference ΔP(Mpa)

PSL202

6.4

6.4

6.4

5.10

 

 

 

 

 

 

 

 

PSL204

 

 

 

 

6.4

6.4

5.62

 

 

 

 

 

PSL208

 

 

 

 

 

 

 

6.4

5.31

3.97

 

 

PSL320

 

 

 

 

 

 

 

 

 

 

6.4

4.14

 

8. Mounting Dimensions and Weight (ZDSN)

Nominal diameter

DN（mm）

L(mm)

H1

mm

H(mm)

R

mm

Weight (kg)

PN(MPa)

Normal temperature

medium temperature

1.6

MPa

4.0  6.4Mpa

1.6

4.0

6.4

Normal temperature

medium temperature

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

 

 

 

 


9. Model Preparation Instructions

Z

D

S

P

40

P

G

automatic control valve

Type of actuator:

Displacement characteristics:

Valve structure:

Nominal pressure:

Body Material:

Temperature Type:

 

D: PS Series

S: indicates straight stroke

P: indicates single seat

16: means 1.6MP

C: indicates carbon steel

G: medium temperature type

Normal temperature omitted

 

R: indicates 3810 series

 

N: means two-seat

40: 4.0MP

P: Indicates stainless steel

Cast iron omitted

 

 

H: DKZ series

 

 

64: means 6.4MP

 

 

 

C: indicates other series

 

 

 

 

 


10. order notice:
1. Product model and name, 2. Nominal diameter DN(mm), 3. Nominal pressure, 4. Flow characteristics, 5. Body material, 6. Rated flow coefficient, 7. Medium type and temperature range, 8. Pressure (differential pressure) before and after the valve, 9. Power supply voltage and control signal, 10. Other special requirements.

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