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GWXDF3204HTwo way flow hard impact hard ball valve

  • Profile:

    Most of the valves in the pipe network system are mainly used to cut off and regulate the medium. These valves account for a large proportion in the whole system, have a large amount of consumption, and require the valves to be durable and cost-effective. At the same time, they should be able to adjust and cut off the medium when the medium is in forward flow, and prevent the medium backflow when the pressure difference is changed or repaired, that is, it has the function of two-way cut-off.

working principle

1. Main types: the main types of the valve are: worm gear, electric, pneumatic, hydraulic, among which pneumatic valve and hydraulic valve are suitable for occasions with pressure air source and pressure liquid source.
2. Working principle: the sealing surface of valve core is cubic curved surface, and the sealing surface of valve seat is conic surface. At the sealing point, the seat surface is actually the section of the valve core cubic curved surface (see Figure), so its combination is perfect. It has the function of adaptation (automatic center positioning and overlapping) and compensation for wear. Since the rotation center deviates from the geometric center of the valve core, the actual effect of the spool body is constantly backward and inward when the valve core is opened, and the valve core body is constantly advancing and expanding outward when the valve core is closed. Its function is equivalent to the synthesis of half ball valve, gate valve, globe valve and butterfly valve. Open the diagram of different angles: the main function of the two-way flow valve is that it can not only seal well under the positive pressure, but also seal well when the reverse pressure or the reverse pressure is greater than the positive pressure. When the positive pressure acts, the medium pressure pushes the valve plate to move forward and the valve stem deforms. The sealing surface of the valve plate is close to the sealing surface of the valve seat to transmit pressure, which pushes the valve seat to the valve body step to make it well sealed. When the reverse pressure acts, the medium pressure pushes the valve plate to move backward, and the valve stem deforms. At the same time, the medium pressure pushes the sealing surface of the valve seat close to the sealing surface of the valve plate, transmitting pressure, and pushing the valve seat to the limit deformation position of the valve rod, so as to make it well sealed.

Model description
Driving mode of double flow hard impact hard ball valve
Code name

3

6

7

9

Driving mode Worm gear Pneumatic Hydrodynamics Electric

 

Connection type of double flow hard impact hard ball valve
Code name

4

Connection type flange

 

Sealing surface material of double flow hard impact ball valve
Code name

H

R

Y

Sealing surface material Martensitic stainless steel austenitic stainless steel Cemented carbide

 

Nominal pressure of double flow hard impact ball valve
Code name

6

10

16

25

40

Nominal pressure(MPa)

0.6

1.0

1.6

2.5

4.0

 

Shell material of hard impact ball valve with two-way flow
Code name

Z

Q

C

I

P

R

Material Science Gray cast iron Ductile iron

WCB

1Cr5Mo、ZG1Cr5Mo

1Cr18Ni9Ti ZG1Cr18Ni9Ti

1Cr18Ni12MoTi、 ZG1Cr18Ni12MoTi

 

Technical performance specification for two way flow hard impact ball valve

Nominal diameter(mm)

Nominal pressure(MPa)

Test pressure(MPa)

Applicable temperature(℃)

Applicable media

Shell strength test

 

Forward sealing test Reverse sealing test

DN50~500

1.0

1.5

1.1

1.1

If it is not specified as below 80 ℃, it can be produced below 200 ℃ Water, sewage, oil, etc

 

 

 

 

Pressure test standard

GB/T13927-1992

General purpose valve pressure test

JB/T9092-1999

Test and inspection of valves
Structural design criteria

GB/T12237-1989

General purpose valves flanged and butt welded steel ball valves

GB/T12238-1989

General purpose valve flange and wafer connection butterfly valve
Standard of materials used

GB/T12226-1989

Technical specification of gray iron castings for general purpose valves

GB/12227-1989

Technical conditions of ductile iron for general purpose valves

GB/T12229-1989

Technical conditions of ductile iron for general purpose valves

GB/T12230-1989

Technical specification of austenitic steel castings for general purpose valves

 

Materials of main parts of double flow hard impact ball valve
Part name  
valve body Gray cast iron, ductile iron, WCB, carbon steel
Valve plate

WCB、Q235、stainless steel

Stem stainless steel
valve seat

WCB、Q235、stainless steel

model

GWXDF204

GWXDF3204

GWXDF7204

GWXDF9204

GWXDF6204

 

Parameter table of electric actuator for two way flow hard impact ball valve

Nominal diameter of valve(mm)

Model and specification of electric actuator

Zui large control turn(Nm)

Zui large control turn(Nm)

Output speed(r/min)

Motor power(kw)

Motor locked rotor current(A)

50

SMR-10

 

100

18

0.25

7.21

65

SMR-10

 

100

18

0.25

7.21

80

SMR-20

 

200

18

0.55

15.4

100

SMR-20

 

200

18

0.55

15.4

125

SMR-40

 

300

18

0.75

18.34

150

SMR-40

 

450

18

1.1

28.00

200

SMR-60

 

450

18

1.1

28.00

250

SMR-100

 

900

18

2.2

36.75

300

SMR-100

 

900

18

2.2

36.75

350

Z120-18

 

1200

18

3.0

55.30

400

Z250-18

 

2500

18

5.5

84.35

450

Z350-10

 

3500

10

4.0

62.09

500

Z500-10

 

5000

10

5.5

84.35

600

Q600-0.5

6000

0.5

0.75

18.34

700

Q800-0.5

8000

0.5

1.1

28.00

800

Q1200-0.5

12000

0.5

1.5

28.14

900

Q1600-0.5

16000

0.5

2.2

36.75

1000

Q2000-0.5

20000

0.5

3.0

55.30

1200

Q3000-0.5

30000

0.5

4.0

62.09

1400

Q4000-0.5

40000

0.5

4.0

62.09

1600

Q6300-0.25

63000

0.25

5.5

84.35

1800

Q8000-0.25

80000

0.25

5.5

84.35

2000

Q12000-0.125

120000

0.125

5.5

84.35

Installation dimension table of two way flow hard impact ball valve

DiameterDN

A

B

C

D

E

H

L

N__Фd

 

 

 

 

 

Manual Pneumatic Electric Manual Pneumatic Electric Clip on type Flange type Clip on type Flange type

50

88

110

140

112

200

245

255

350

625

530

43

108

4-14

4-14

65

108

130

160

115

200

245

255

370

625

530

46

112

4-14

4-14

80

124

150

190

120

200

245

255

380

645

565

64

114

4-18

4-18

100

144

170

210

138

200

355

255

420

675

600

64

127

4-18

4-18

125

174

200

240

164

200

355

255

460

715

640

70

140

4-18

8-18

150

199

225

265

175

280

355

315

55

800

705

76

140

4-18

8-18

200

254

280

320

200

425

250

315

760

850

775

89

152

4-18

8-18

250

309

335

375

230

425

250

315

830

925

945

114

165

4-18

12-18

300

363

395

440

260

560

450

315

895

1035

1070

114

178

4-22

12-22

350

413

445

490

300

560

450

315

950

1070

1140

127

190

4-22

12-22

400

463

495

540

340

580

450

315

1190

1190

1210

140

216

4-22

16-22

450

518

550

595

350

580

650

714

1255

1250

1335

152

222

4-22

16-22

500

568

600

645

380

580

650

714

1305

1290

1415

152

229

4-22

20-22

600

667

705

755

450

660

850

810

1340

1455

1605

178

700

772

810

860

480

550

850

810

1520

1585

1844

229

800

878

920

975

530

550

1250

810

1710

1700

2040

241

900

978

1020

1075

580

550

1250

863

1810

1965

2255

241

1000

1078

1120

1175

650

750

1250

863

1960

2015

2380

300

 

 

 

 

 

 

technical parameter
Technical performance specification for two way flow hard impact ball valve

Nominal diameter(mm)

Nominal pressure(Mpa)

Test pressure(Mpa)

Applicable temperature(℃)

Applicable media
Shell strength test Forward sealing test Reverse sealing test

DN50~3000mm

0.6

0.9

0.66

0.66

If not indicated as 0 ~ 80 ℃, 0 ~ 200 ℃ can be produced  

1.0

1.5

1.1

1.1

1.6

2.4

1.76

1.76

2.5

3.75

2.76

2.76

4.0

6.0

4.4

4.4

 

Main design and manufacturing standards of double flow hard impact ball valve
Standard content Standard number Standard name
Flange standard

GB/T9113-2000

Integral steel pipe flange

GB/T17241.6-1998

Integral cast iron pipe flange
Structural length standard

GB/T1221-2005

Structural length of metal valve
Pressure test standard

GB/T13927-1992

General purpose valve pressure test

JB/T9092-1999

Test and inspection of valves
Structural design criteria

GB/T12237-1989

General purpose valves flanged and butt welded steel ball valves

GB/T12238-1989

General purpose valve flange and wafer connection butterfly valve
Standard of materials used

GB/T12226-1989

Standard of materials used

GB/12227-1989

Standard of materials used

GB/T12229-1989

Standard of materials used
  Technical specification of austenitic steel castings for general purpose valves

 

Materials of main parts of double flow hard impact ball valve
Part name  
valve body Gray cast iron, ductile iron, WCB, carbon steel
Valve plate

WCB、Q235、stainless steel

Stem stainless steel
valve seat stainless steel

 

Driving mode of double flow hard impact hard ball valve
Driving mode Manual worm Hydrodynamics Electric Pneumatic
model

GWXDF207

GWXDF3207

GWXDF7207

GWXDF9207

GWXDF6207

 

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