Zhejiang Keshida Self Control Valve Co., Ltd
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    Shanghai Office: Chonggu Town, Qingpu District, Shanghai.
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ZDLP electric single seat regulating valve (WCB)
ZDLP electric single seat regulating valve (WCB)
Product details

Product Overview

The ZDLP electronic electric single seat regulating valve consists of a straight stroke electric actuator and a low flow resistance straight through single seat valve. The electric actuator is an electronic integrated structure with a servo amplifier inside. By inputting control signals and power supply, the valve opening can be controlled to adjust working parameters such as pressure, flow rate, liquid level, and temperature. It has the characteristics of sensitive action, simple connection, large flow rate, small volume, and high adjustment accuracy. The control accuracy and performance are significantly improved compared to the DKZ type.
Single seat valves are suitable for situations with strict requirements for leakage, low pressure difference before and after the valve, and a certain viscosity. Widely used in industries such as power, metallurgy, chemical, petroleum, environmental protection, light industry, equipment, etc.

Main technical parameters and performance indicators

Main technical parameters of the regulating mechanism

Nominal diameter mm

G3/4”

20

25

32

40

50

65

80

100

125

150

200

250

300

Valve seat diameter mm

3

4

5

6

7

8

10

12

15

20

26

32

40

50

66

80

100

125

150

200

250

300

Rated flow coefficient kv

Linear type

0.08

0.12

0.20

0.32

0.5

0.8

1.8

2.8

4.4

6.9

11

17.6

27.5

44

69

110

176

275

440

690

1000

1600

Equal percentage

1.6

2.5

4

6.3

10

16

25

40

63

100

160

250

400

630

900

1440

Nominal pressure (MPa)

0.6,1.6,2.5,4.0,6.4

Travel distance (mm)

10

16

25

40

60

100

Traffic characteristics

straight line

Straight line, equal percentage, quick open

Working temperature ℃

-40-230 ℃ (normal temperature type), heat sink 230-450 ℃ (medium temperature type), special order -100-600 ℃

Flange size

Compliant with JB78-59 and JB79-59 standards, can be ordered and produced according to JB/79.1-94, JB/79.2-94, ANSI, JIS, DIN and other standards

body material

WCB(ZG230-450)、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti CF8 CF8M

Valve core material

1Cr18Ni9, SS304,0Cr18Ni12Mo2Ti,SS316,ZG1Cr18Ni9Ti

Valve type

Straight through single seat cast ball valve

Upper valve cover type

Ordinary (room temperature), hot plate (medium temperature), long neck (low temperature)

Equipped with electric actuator model

PSL

PSL-201

PSL-202

PSL-204

PSL-208

PSL-312

PSL325

361L

361LSA-08
361LXA-08

361LSA-20

361LSB-30

361LSB-
50

361LSC-65

361LSC-99

Explosion proof type

361LXA-20

361LXB-30

361LXB-
50

Note: 1. We can provide users with products that meet national flange standards such as ANSI, JPI, and JPI, with flange spacing determined according to user needs.
2. Products with working temperature, nominal pressure, and nominal diameter exceeding the listed range can be resolved through negotiation with our company

performance

1. Main technical parameters of the executing agency

model

Rated output force N

Speed mm/s

technical parameter

PSL

361L

PSL

361L

PSL

361L

PSL

361L

201

361LSA-08
361LXA-08

1000

800
800

0.25

4.2
4.2

Power Supply: AC220V 50Hz
Input signal: DC4-20mA
DC1-5V
(Shielded wire for signal line)
Output signal: DC4~20mA
Protection level: IP67
With handwheel

Power Supply: AC220V 50Hz
Input signal: DC4-20mA
DC1-5V
(Shielded wire for signal line)
Output signal: DC4~20mA
Protection level: equivalent to IP55
Explosion proof mark: Exd Ⅱ BT4
With handle

202

361LSA-20
361LXA-20

2000

2000
2000

0.50

2.1
2.1

204

361LSB-30
361LXB-30

4500

3000
3000

0.50

3.5
3.5

208

361LSB-50
361LXB-50

8000

5000
5000

1.00

1.7
1.7

312

361LSC-65

12000

6500

0.60

2.8

325

361LSC-99

25000

10000

1.0

2.0

2. Performance indicators

project

Indicator value

Basic error%

Equipped with 3610L ± 2.5; Equipped with locator ± 1.0

Return difference%

Equipped with 361L ± 2.0; Equipped with PSL ± 1.0

Dead zone%

1.0

Constant point deviation%

Electric opening

Starting point

±2.5

End

±2.5

Electricity off

Starting point

±2.5

End

±2.5

Adjustable range

50:1

Rated travel deviation%

2.5

Discharge rate L/H

Compliant with JB/T7387-94 Level IV rated capacity of less than valve × 10-4

3. Allow pressure difference

Nominal diameter (mm)

20

25

40

50

65

80

100

150

200

250

300

Valve seat diameter (mm)

10

12

15

20

25

32

40

50

65

80

100

125

150

200

250

300

Executing Agency

Allowable pressure difference △ P (MPa)

Equipped with PSL

PSL202

6.4

6.4

6.4

4.90

3.14

1.92

1.23

0.78

PSL204

4.31

2.76

1.76

1.04

0.69

0.44

PSL208

1.86

1.23

0.78

0.50

0.35

0.20

PSL320

1.26

0.87

0.49

0.32

0.22

Equipped with 361L

361LSA-20

6.4

6.4

6.4

4.90

3.14

1.92

1.23

0.78

361LSB-50

4.79

3.06

1.96

1.16

0.76

0.49

361LSC-65

1.51

0.99

0.64

0.41

0.28

361LSC-99

0.63

0.44

0.25

0.16

0.11

Note: The actual configuration needs to be determined based on specific process parameters. If the pressure difference is allowed to be clear or the maximum working pressure difference exceeds the list range, please contact us and take appropriate measures to solve it.

Dimensions mm

Public diameter (mm)

20

25

40

50

65

80

100

150

200

250

300

L(mm)

PN1.6MPa

181

184

222

254

276

298

352

451

600

720

820

PN4.0MPa

194

197

235

267

292

317

368

473

600

760

850

PN6.4MPa

206

210

251

286

311

337

394

508

650

800

870

H1(mm)

67

72

87

92

105

110

127

174

209

300

350

Equipped with PSL

H(mm)

Ordinary type

738

750

765

767

845

857

875

1025

1045

1252

1545

Heat sink type

888

900

930

937

1025

1042

1085

1285

1305

1805

1825

D(mm)

176

225

Weight (KG)

15

17

24

29

49

61

82

150

211

370

570

Equipped with 361L

H(mm)

Ordinary type

501

513

650

652

770

782

800

1080

1125

1345

1365

Heat sink type

651

663

815

822

950

967

1010

1340

1385

1625

1645

D(mm)

225

310

Weight (KG)

23

24

39

44

64

76

97

203

264

418

618

Product Overview

The ZDLP electronic electric single seat regulating valve consists of a straight stroke electric actuator and a low flow resistance straight through single seat valve. The electric actuator is an electronic integrated structure with a servo amplifier inside. By inputting control signals and power supply, the valve opening can be controlled to adjust working parameters such as pressure, flow rate, liquid level, and temperature. It has the characteristics of sensitive action, simple connection, large flow rate, small volume, and high adjustment accuracy. The control accuracy and performance are significantly improved compared to the DKZ type.
Single seat valves are suitable for situations with strict requirements for leakage, low pressure difference before and after the valve, and a certain viscosity. Widely used in industries such as power, metallurgy, chemical, petroleum, environmental protection, light industry, equipment, etc.

picture

Main technical parameters and performance indicators

Main technical parameters of the regulating mechanism

Nominal diameter mm

G3/4”

20

25

32

40

50

65

80

100

125

150

200

250

300

Valve seat diameter mm

3

4

5

6

7

8

10

12

15

20

26

32

40

50

66

80

100

125

150

200

250

300

Rated flow coefficient kv

Linear type

0.08

0.12

0.20

0.32

0.5

0.8

1.8

2.8

4.4

6.9

11

17.6

27.5

44

69

110

176

275

440

690

1000

1600

Equal percentage

1.6

2.5

4

6.3

10

16

25

40

63

100

160

250

400

630

900

1440

Nominal pressure (MPa)

0.6,1.6,2.5,4.0,6.4

Travel distance (mm)

10

16

25

40

60

100

Traffic characteristics

straight line

Straight line, equal percentage, quick open

Working temperature ℃

-40-230 ℃ (normal temperature type), heat sink 230-450 ℃ (medium temperature type), special order -100-600 ℃

Flange size

Compliant with JB78-59 and JB79-59 standards, can be ordered and produced according to JB/79.1-94, JB/79.2-94, ANSI, JIS, DIN and other standards

body material

WCB(ZG230-450)、ZG1Cr18Ni9Ti、ZG0Cr18Ni12Mo2Ti CF8 CF8M

Valve core material

1Cr18Ni9, SS304,0Cr18Ni12Mo2Ti,SS316,ZG1Cr18Ni9Ti

Valve type

Straight through single seat cast ball valve

Upper valve cover type

Ordinary (room temperature), hot plate (medium temperature), long neck (low temperature)

Equipped with electric actuator model

PSL

PSL-201

PSL-202

PSL-204

PSL-208

PSL-312

PSL325

361L

361LSA-08
361LXA-08

361LSA-20

361LSB-30

361LSB-
50

361LSC-65

361LSC-99

Explosion proof type

361LXA-20

361LXB-30

361LXB-
50

Note: 1. We can provide users with products that meet national flange standards such as ANSI, JPI, and JPI, with flange spacing determined according to user needs.
2. Products with working temperature, nominal pressure, and nominal diameter exceeding the listed range can be resolved through negotiation with our company

performance

1. Main technical parameters of the executing agency

model

Rated output force N

Speed mm/s

technical parameter

PSL

361L

PSL

361L

PSL

361L

PSL

361L

201

361LSA-08
361LXA-08

1000

800
800

0.25

4.2
4.2

Power Supply: AC220V 50Hz
Input signal: DC4-20mA
DC1-5V
(Shielded wire for signal line)
Output signal: DC4~20mA
Protection level: IP67
With handwheel

Power Supply: AC220V 50Hz
Input signal: DC4-20mA
DC1-5V
(Shielded wire for signal line)
Output signal: DC4~20mA
Protection level: equivalent to IP55
Explosion proof mark: Exd Ⅱ BT4
With handle

202

361LSA-20
361LXA-20

2000

2000
2000

0.50

2.1
2.1

204

361LSB-30
361LXB-30

4500

3000
3000

0.50

3.5
3.5

208

361LSB-50
361LXB-50

8000

5000
5000

1.00

1.7
1.7

312

361LSC-65

12000

6500

0.60

2.8

325

361LSC-99

25000

10000

1.0

2.0

2. Performance indicators

project

Indicator value

Basic error%

Equipped with 3610L ± 2.5; Equipped with locator ± 1.0

Return difference%

Equipped with 361L ± 2.0; Equipped with PSL ± 1.0

Dead zone%

1.0

Constant point deviation%

Electric opening

Starting point

±2.5

End

±2.5

Electricity off

Starting point

±2.5

End

±2.5

Adjustable range

50:1

Rated travel deviation%

2.5

Discharge rate L/H

Compliant with JB/T7387-94 Level IV rated capacity of less than valve × 10-4

3. Allow pressure difference

Nominal diameter (mm)

20

25

40

50

65

80

100

150

200

250

300

Valve seat diameter (mm)

10

12

15

20

25

32

40

50

65

80

100

125

150

200

250

300

Executing Agency

Allowable pressure difference △ P (MPa)

Equipped with PSL

PSL202

6.4

6.4

6.4

4.90

3.14

1.92

1.23

0.78

PSL204

4.31

2.76

1.76

1.04

0.69

0.44

PSL208

1.86

1.23

0.78

0.50

0.35

0.20

PSL320

1.26

0.87

0.49

0.32

0.22

Equipped with 361L

361LSA-20

6.4

6.4

6.4

4.90

3.14

1.92

1.23

0.78

361LSB-50

4.79

3.06

1.96

1.16

0.76

0.49

361LSC-65

1.51

0.99

0.64

0.41

0.28

361LSC-99

0.63

0.44

0.25

0.16

0.11

Note: The actual configuration needs to be determined based on specific process parameters. If the pressure difference is allowed to be clear or the maximum working pressure difference exceeds the list range, please contact us and take appropriate measures to solve it.

Dimensions mm

Public diameter (mm)

20

25

40

50

65

80

100

150

200

250

300

L(mm)

PN1.6MPa

181

184

222

254

276

298

352

451

600

720

820

PN4.0MPa

194

197

235

267

292

317

368

473

600

760

850

PN6.4MPa

206

210

251

286

311

337

394

508

650

800

870

H1(mm)

67

72

87

92

105

110

127

174

209

300

350

Equipped with PSL

H(mm)

Ordinary type

738

750

765

767

845

857

875

1025

1045

1252

1545

Heat sink type

888

900

930

937

1025

1042

1085

1285

1305

1805

1825

D(mm)

176

225

Weight (KG)

15

17

24

29

49

61

82

150

211

370

570

Equipped with 361L

H(mm)

Ordinary type

501

513

650

652

770

782

800

1080

1125

1345

1365

Heat sink type

651

663

815

822

950

967

1010

1340

1385

1625

1645

D(mm)

225

310

Weight (KG)

23

24

39

44

64

76

97

203

264

418

618


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