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Heavy-Duty Premium Centerline Butterfly Valve for Industrial Applications

The D71X Type Soft-sealed Butterfly Valve is a common type of valve, which is used for
bidirectional opening-closing and flow regulation in pipelines, with an adjustment range of 0
to 90 degrees of opening. Featuring a simple structure, compact size, light weight and easy
operation
Availability:
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Product Description

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Usage Scenarios

this valve is widely applied in industries such as industrial manufacturing, munici

pal engineering, building HVAC, papermaking, pharmaceuticals, food and beverage. It is one

of the indispensable fluid control devices in industrial production and daily life.

Features

1.Simple Structure: It is mainly composed of components such as valve body, butterfly disc,

valve stem and handle. With a relatively simple structure and no complicated transmission

mechanism, it features low manufacturing and maintenance costs.

2.Easy Installation: Adopting a wafer-type design, it can be directly installed between two

pipeline flanges and clamped with bolts. It requires a small installation space and the installa

tion process is simple and fast, which can effectively save installation time and costs.

3.Convenient Operation: Driven by a handle, the opening and closing of the butterfly disc can

be easily realized by rotating the handle. It has a small operating torque and can be manually

operated without additional power equipment, making it suitable for applications where

manual operation is convenient.

4.Low Fluid Resistance: When the butterfly disc is open, the flow channel is almost

unobstructed, allowing fluid to pass through smoothly. With a small drag coefficient, it can

effectively reduce pressure loss in the pipeline system and improve fluid transmission

efficiency.

5.Good Sealing Performance: Equipped with a reliable sealing structure and high-quality

sealing materials, it can achieve excellent sealing performance under normal working

conditions, effectively preventing medium leakage and ensuring the tightness and safety of

the pipeline system.

6.Excellent Regulation Performance: The opening degree of the butterfly disc can be

precisely controlled by rotating the handle, thereby realizing accurate regulation of fluid flow

and meeting flow control requirements under different working conditions.

7.Lightweight: The overall structure is compact and relatively light, facilitating transportation

and installation. It is especially suitable for pipeline systems with weight restrictions, such as

those on ships and mobile equipment.

Technical Parameters

1.Flanged connection shall comply with the standards GB/T 17241.1-2024 and GB/T

9124.1-2019.

2.Strength and sealing tests shall comply with the standard GB/T 13927-2022.

3.Relevant technical parameters are listed in Table 1, materials of main components in

Table 2, overall dimensions in Table 3

Table 1:Technical Parameters Table

PN

1.0MPa

1.6MPa

2.5MPa

Body Test

1.5MPa

2.4MPa

3.75MPa

Seal Test

1.1MPa

1.76MPa

2.75MPa

Temperature

0℃~80℃

Actuation Method

Handle,wormgear,pneumatic,electric,etc

Multiple Model

D71X、D371X、D671X、D971X,etc.

Table 2:Main Component Materials

Part Name Materials

Body

Ductile Iron/Stainless Steel /Cast Steel

Disc

Ductile Iron/Stainless Steel/Cast Steel

Seat

NBR/EPDM/PTFE

Sealing Ring

NBR/EPDM/PTFE

Stem

Stainless Steel

Fasteners

Carbon SteeVStainless Steel

Table 3:Overall Dimensions mm

DN

φD

①K

φD0

L

L1

L2

H1

H2

H3

H4

PN10、PN16、PN25

PN10

PN16

PN25

50

92

125

135

42±2

179

147

70

147

40

55

65

110

145

135

44±2

179

147

76

155

40

55

80

121

160

135

45±2

179

147

92

164

40

55

100

153

180

190

135

52±2

207

147

106

175

46

57

125

176

210

220

137

54±2

207

149

119

194

46

60

150

207

240

250

137

55±2

207

149

132

206

46

60

200

265

295

310

270

60±2

194

194

163

245

75

75

250

316

350

355

370

270

66±2

194

194

204

285

75

75

300

370

400

410

430

270

76±2

194

194

235

312

78

78

350

417

460

470

490

270

80±2

194

194

264

334

80

80

400

470

515

525

550

270

89±2

235

235

310

380

148

148

450

527

565

585

600

270

102±2

235

235

335

410

148

148

500

580

620

650

660

320

129±2

235

235

360

452

148

148

600

680

725

770

770

387

158±2

290

290

440

530

182

182

Precision Valve Manufacturing

Professional Valve Manufacturer | Integrated Manufacturing

Raw Material

We select high-quality raw materials according to product specifications and international standards. All incoming materials are carefully inspected to ensure chemical composition, mechanical properties and traceability.

Forging & Casting

Advanced forging and casting processes are used to produce strong and reliable valve bodies and components. Strict process control ensures uniform structure, dimensional accuracy and excellent mechanical performance.

CNC Machining

Our CNC machining equipment provides precise and consistent processing of valve components. Critical dimensions, threads and sealing surfaces are strictly controlled to ensure accurate assembly and reliable sealing performance.

Shot Blasting & Coating

Valve surfaces are professionally shot blasted to remove rust, scale and impurities. Protective coatings are then applied according to customer requirements, providing excellent corrosion resistance and a durable surface finish.

Pressure Testing

Every valve undergoes strict pressure testing before shipment. Body and seat tests are performed according to applicable standards and customer specifications to verify pressure resistance and sealing reliability.

Quality Inspection

Our quality control team conducts comprehensive inspections throughout the production process. Finished valves are checked for dimensions, appearance, materials, pressure performance and overall quality before final approval and shipment.

For more products, please contact us

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