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BUTTERFLY VALVE
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DN350-DN600 Butterfly Valve
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HomeProducts   → BUTTERFLY VALVE  → DN350-DN600 Butterfly Valve
DN350-DN600 Butterfly Valve
 
 
Medium Capability:
Freshwater, Sea water, Air, steam, food, medicine and kinds of oil, acid, alkali, salt.
Feature:
Long service life with reliable seal and without frequent maintenance. Butterfly valve have flow characteristics three times better than globe valve, and about 75% of a same size gate valve。Butterfly valve can be used for on/off service and throttling,They are superior in Multi-function as compared to gate or globe valves. Butterfly valve can be widely used in chemical field due to trim options and choice of elastomeric liner . 
Butterfly valve have feature of light in weight and small in size, for example, weight andsize of a 10” butterfly valve are 1/9 and 1/6 of a 10” gate valve. So butterfly valve is easy to install and save cost of piping system. Butterfly valve with resilient seat design can be bubble tight as compared to metal seated gate or globe valves. Butterfly valves offer 90-degree open to close. Butterfly valve is approximate 35-40% cost of a same size gate valve. Also low installed cost than gate valve. 
Properly installed butterfly valves are self cleaning and are less susceptible to failure due to trash material in pipe.
(1)Taper Pin Designed Butterfly Valve
    

Item

Qty

Part Name

1

24

Screw

2

1

Bottom Cover

3

1

“O”Ring

4

1

Lower Bushing

5

1

Body

6

1

Stem

7

1

Disc

8

2

Taper Pin

9

1

Seat

10

1

Mid Bushing

11

1

Nameplate

12

2

Upper Bushing

13

1

“O”Ring

14

1

Key

Structure and Parts List for Taper Pin Designed Butterfly Valve
Nominal PressurePN10/PN16/PN20
(2)Split Stem Designed Butterfly Valve
    

Item

Qty

Part Name

1

24

Screw

2

1

Bottom Cover

3

1

“O”Ring

4

1

Lower Bushing

5

1

Body

6

1

Lower Stem

7

1

Disc

8

2

Upper Stem

9

1

Seat

10

1

Mid Bushing

11

1

Nameplate

12

2

Upper Bushing

13

1

“O” Ring

14

4

Screw

15

1

Stem Retainer

16

1

Key

Structure and Parts List for Split Stem Designed Butterfly Valve
Nominal PressurePN10/PN16
 

Body

DISC

Stem

Bushing

Seat

Material

 

Material

 

WorkingTemperature

()

C.I

DI

416SS

Lubricative Bronze

NR

-20-+85

D.I

WCB

431SS

Macromolecule +PTFE

HYPALON

-18-+135

WCB

AL-Brz

316SS

316SS+PTFE

EPDM

-30-+110

AL-Brz

Stainless Steel

 

 

NEOPRENE

-7-+93

Stainless Steel

 

 

 

NBR

-12-+82

 

 

 

 

WRR

-10-+50

 

 

 

 

VITON

-23-+150

 

 

 

 

HRR

-20-+150

 

 

 

 

PTFE

+10-+150

 
Outline Dimensions for DN350-DN600 Butterfly Valve
  

Valve Size

A

Min

B

C

D

E

Inch

mm

PN10

PN16

PN20

14

350

333.3

322.0

375.1

405

368

45.0

45.0

45.0

16

400

389.6

379.1

439.5

470

400

51.2

72.0

72.0

18

450

440.5

426.8

490.5

521

422

51.2

72.0

72.0

20

500

491.6

472.7

535.4

565

480

64.2

82.0

82.0

24

600

592.5

571.6

654.0

693

562

70.2

82.0

82.0


Valve Size

F

G

H

I

Inch

mm

PN10

PN16

PN20

PN10

PN16

PN20

14

350

680.0

680.0

680.0

76.5

79.5

31.6

31.6

42.9

16

400

759.8

780.6

780.6

85.7

90.0

33.2

38.0

50.6

18

450

800.8

821.6

821.6

104.6

109.0

38.0

42.9

54.0

20

500

898.2

916.0

916.0

130.3

135.0

41.1

45.7

63.4

24

600

1090.9

1102.7

1102.7

151.4

156.0

50.6

54.0

75.0

 

Valve Size

J

K

L

P

m

M

R

Inch

mm

14

350

140

102

12

16

M20

23

460

16

400

197

140

18

16

M24

28

515

18

450

197

140

18

20

M24

28

565

20

500

197

140

18

20

M24

28

620

24

600

276

165

22

20

M27

31

725

Note:
Dimensions for mounting flange above mentioned conform BS4504 PN10, and top mounting conform to ISO5211. When required, standards from other countries or any special requirements are also available.
Weight of Butterfly Valve DN350-DN600
 

Valve Size

PN10

PN16

PN20

Inch

mm

WS

LL

WS

LL

WS

LL

14

350

41.3

56.0

41.3

56.0

53.9

68.6

16

400

61.3

96.0

63.0

97.7

76.7

111.4

18

450

78.9

122.0

80.7

123.8

95.9

139.0

20

500

128.1

202.0

129.8

203.7

147.1

221.0

24

600

188.1

270.0

191.6

273.5

222.8

304.7