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Welding Type Gard Sealed Metal Butterfly Valve

A "Type A" Butterfly Valve is a basic model of butterfly valve, specifically designed for low-pressure and low-temperature working conditions. Its valve body is mostly made of cast iron or cast steel, with relatively weak sealing performance. It is suitable for general medium shut-off scenarios where high sealing requirements are not needed.

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  • Flexible installation and convenient maintenance
  • Low operational resistance and high flow efficiency
  • Performance under harsh working conditions
  • High reliability sealing structure
  • Compact structure and lightweight design
Flexible installation and convenient maintenance
  • Flexible installation and convenient maintenance
    01
    Multi station installation: The bidirectional sealing design is not limited by the flow direction of the medium and supports vertical/horizontal installation;
  • 02
    Removable sealing components: The sealing ring is independently embedded in the butterfly plate, and maintenance does not require dismantling the pipeline, reducing maintenance costs.
Low operational resistance and high flow efficiency
  • Low operational resistance and high flow efficiency
    01
    The straight through flow channel, combined with the frame structure butterfly plate, reduces flow resistance and is suitable for conveying high flow media with low driving torque. It is compatible with pneumatic/electric actuators to achieve fast opening and closing (≤ 5 seconds).
Performance under harsh working conditions
  • Performance under harsh working conditions
    01
    High temperature and high pressure resistance: The valve seat and butterfly plate are made of materials such as stainless steel and cobalt based hard alloy, which can withstand high temperatures and high pressure media (such as steam and hot oil) up to 800 ℃;
  • 02
    Corrosion and wear resistance: The all metal material is resistant to chemical corrosion, and the sealing surface is welded with hard alloy, which extends the service life (continuous opening and closing ≥ 10000 times).
High reliability sealing structure
  • High reliability sealing structure
    01
    Multi level hard seal/triple eccentric design: By using three-dimensional eccentric elasticity or multi-layer metal sealing structure, zero leakage is achieved, and the wear rate of the sealing surface is low (instantaneous detachment upon contact), resulting in better sealing performance for long-term use;
  • 02
    Double sealing technology: combining metal hard sealing with elastic compensation structure (such as flexible graphite layer), suitable for a wide temperature range of -50 ℃~+800 ℃, balancing high temperature airtightness and low temperature elasticity.
Compact structure and lightweight design
  • Compact structure and lightweight design
    01
    Adopting flange free butt welding connection, with small volume and light weight, it is convenient for pipeline installation and insulation treatment, saves space and has a clean appearance.
Main Component Materials

Part Name

Material

valve body

Cast iron, stainless steel, aluminum, chromium-molybdenum steel, and special materials

butterfly valve disc

Cast steel, alloy steel (hard chrome plated), stainless steel, and special materials

sealing ring

Stainless steel, wear-resistant material

valve stem

2Cr13, 1Cr13 stainless steel, aluminum-molybdenum steel

filler

flexible graphite

Performance Specifications & Dimensions
  • Nominal pressure PN
    0.6/1.0/1.6/2.5/4.0/6.4
  • Sealing Pressure
    P x 1.1
  • Medium
    Smoke, gas, water, steam, oil, acid and alkali salts and other media
  • Temperature (℃)
    Carbon steel: -29 ℃~425 ℃/Stainless steel: -196 ℃~600 ℃

Nominal Pressure (PN)

PN0.6MPa

Nominal Pressure (PN)

PN1.0MPa

Nominal Diameter (DN)

Overall Dimensions (Reference Value)

Nominal Diameter (DN)

Overall Dimensions (Reference Value)

Millimeter

Inch

L

D

d

H

H1

A1

B1

Millimeter

Inch

L

D

d

H

H1

  A1

B1

600

24

390

636

602

499

1280

570

660

600

24

390

636

602

499

1280

570

660

700

28

430

726

692

566

1480

750

550

700

28

430

726

692

566

1480

750

550

800

32

470

826

792

632

1608

750

550

800

32

470

826

792

632

1608

750

550

900

36

510

926

892

693

1857

750

550

900

36

510

926

892

693

1857

750

550

1000

40

550

1028

992

757

2038

900

750

1000

40

550

1028

992

757

2038

900

750

1200

48

630

1228

1192

851

2237

1000

925

1200

48

630

1228

1192

851

2237

1000

925

1400

56

710

1428

1392

876

2411

1000

925

1400

56

710

1428

1392

876

2411

1000

925

1600

64

790

1628

1592

1095

2756

1000

925

1600

64

790

1628

1592

1095

2756

1000

925

1800

72

870

1828 

1792 

1214

3093

1100

980

1800

72

870

1828

1792

1214

3093

1100

980

2000

80

950 

2028 

1992

1332

3355

1100

980

2000

80

950

2028

1992

1332

3365

1100

980


Nominal Pressure (PN)

PN1.6MPa

Nominal Pressure (PN)

PN1.6MPa

Nominal Diameter (DN)

Overall Dimensions (Reference Value)

Nominal Diameter (DN)

Overall Dimensions (Reference Value)

Millimeter

Inch

L

D

d

H

H1

A1

B1

Millimeter

Inch

L

D

d

H

H1

A¹

B1

80

3

180

90

78

90

  356

180

200

600

24

390

636

602

509

1369

570

660

100

4

190

110

96

100

  375

180

200

700

28

430

726

692

572

1492

750

550

125

5

200

135

121

113

  401

180

200

800

32

470

826

792

638

1622

750

550

150

6

210

161

146

130

  450

270

280

900

36

510

926

892

700

1924

750

550

200

8

230

222

202

205

  545

400

425

1000

40

550

1028

992

765

2054

900

750

250

10

250

278

254

235

  630

400

425

1200

48

630

1228

1192

860

2259

1000

925

300

12

270

330

303

275

  715

450

560

1400

56

710

1428

1392

986

2610

1000

925

350

14

290

382

351

309

  817

450

560

1600

64

790

1628

1592

1205

2840

1000

925

400

16

310

432

398

346

  923

535

580

1800

72

870

1828

1792

1463

3205

1100

980

450

18

330

484

450

392

1059

535

580

2000

80

950

2028

1992

1574

3725

1100

980

500

20

350

535

501

427

1126

535

580

一

一

一

一

一

一

一

一

一

Note: Pressure range: 0.6MPa ~ 6.4MPa. The above data is for reference only; for details, please consult the company's sales department.

Valve Application
  • Oil & Gas Transportation

    Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.

  • Chemical Raw Material Control

    The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.

  • High Temperature SteamPipeline in Power System

    High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.

  • Other Industries

    Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.

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Wanyang Zhongchuang City, Bihu Town, Liandu District,Lishui City, Zhejiang Province

+86-13968955880

173444550@qq.com

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