Pneumatic soft seal butterfly valve

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Pneumatic soft seal butterfly valve

Model: D671X
Nominal diameter: DN50 ~ 600mm
Design and manufacture: GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357
Flange size: JB / T74-90, GB9112-9131, HGJ44-76, SH3406, ANSI B16.5, JIS B2212 ~ 2214, DIN2543
Ambient temperature: -30 ~ +70 ℃
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【D671X Pneumatic Soft-Seal Butterfly Valve】 Product Description
Pneumatic soft-seal butterfly valve consists of pneumatic actuator, rubber-sealed butterfly valve and carbon steel or stainless steel valve plate and stem. Suitable for temperature ≤120 ℃, it is the preferred conventional butterfly valve for pipeline. It has the advantages of simple structure, small flow resistance coefficient, straight flow characteristics and no clutter. Can be used to cut off the media, such as equipped with valve positioner can be used to regulate the flow of media, such as flammable and explosive parts need to use explosion-proof accessories (explosion-proof solenoid valve, explosion-proof limit switch, explosion-proof locator) And with different materials of the ring can be adapted to different media, working conditions, suitable for water supply and drainage, sewage, food, heating, gas, shipbuilding, hydropower, metallurgy, energy systems and textile industries, especially for the amount of leakage Requirements of higher, corrosive occasions, for regulating flow and interception media.
 

【D671X pneumatic soft sealing butterfly valve】 Features
 1, compact and lightweight, easy disassembly and maintenance, and can be installed in any location. 
 2, the structure is simple, compact, small operating torque, 90 ° turn quickly open. 
 3, the flow characteristics of a straight line, adjust the performance. 
 4, butterfly plate and valve rod connection pinless structure, to overcome the possible internal leakage point. 
 5, the use of spherical disc butterfly shape, improve the sealing performance and extend the service life of the valve, open more than 50,000 times the pressure remains zero leakage. 
 6, seals can be replaced, and sealed to achieve two-way seal. 
 7, butterfly board can be sprayed coating according to user requirements, such as nylon or PTFE. 
 8, pneumatic soft seal butterfly valve can be designed to connect flange and the folder.


 【D671X pneumatic soft seal butterfly valve】 Technical parameters 
   1. The main design standards

Design and manufacture

GB12237-89, API608, API 6D, JPI 7S-48, BS5351, DIN3357

Flange size

JB / T74 ~ 90, GB9112 ~ 9131, HGJ44 ~ 76, SH3406, ANSI B16.5, JIS B2212 ~ 2214, DIN2543

Structure length

GB12221-89, ANSI B16.10, JIS B2002, NF E29-305, DIN3202

Inspection and testing

JB / T 9092, API 598, GB / T13927


 2. The main parts material standards

Serial number

Part Name

Material

Z

C

D

1

Seat

rubber

rubber

rubber

2

Cone pin

45 # steel

45 # steel

stainless steel

3

Butterfly plate

Gray cast iron hard chrome

Carbon steel or stainless steel

stainless steel

4

Body

grey cast iron

Carbon steel

stainless steel

5

Stud

35 steel

Carbon steel

stainless steel

6

Valve stem

45 # steel

stainless steel

stainless steel

7

Key

45 # steel

45 # steel

stainless steel

8

bushing

Copper-based powder metallurgy

Copper-based powder metallurgy

Copper-based powder metallurgy

9

O-ring

rubber

rubber

rubber

10

Pneumatic device




11

Location indicator

plastic

plastic

plastic


 3. The 
execution parameters

Actuator model

AT, AW series of single-and double-acting pneumatic actuator

Supply pressure

0.4 ~ 0.7MPa

Air source interface

G1 / 4 ", G1 / 8", G3 / 8 ", G1 / 2"

Ambient temperature

-30 ~ +70 ℃

The role of form

Single-acting actuator: Off Gas formula (B) - loss of gas when the valve opening (FO); open air (K) - loss of gas when the valve closed position (FC) 
double acting actuator: Off Gas formula (B ) - Leakage valve position to maintain (FL); open air (K) - loss of valve position to maintain (FL)

Can be equipped with accessories

Positioner, Solenoid valve, Air filter pressure reducer, Relief valve, Stroke switch, Valve position transmitter, Hand wheel mechanism, etc.

 

【D671X pneumatic soft seal butterfly valve】 Dimensions

DN

L

H

D

D1

zd

A

50

42

80

52.9

120

4-19

160

65

44.7

89

64.5

136.2

4-19

190

80

45.2

95

78.8

160

4-19

190

100

52.1

114

104

185

4-19

206

125

54.4

127

123.3

215

4-19

260

150

55.8

139

155.6

238

4-23

286

200

60.6

175

202.5

295

4-23

340

250

65.6

203

250.5

357

4-23

412

300

76.9

242

301.6

407

4-23

480

350

76.5

267

333.3

467

4-23

480

400

86.5

309

389.6

515 
525

4-28

538

450

105.6

328

440.5

565 
585

4-28

568

500

131.8

361

491.5

620 
650

4-M24

660

600

152

459

592.5

725 
770

4-M27

740

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