Forged Pneumatic Diaphragm Valve

Specification

Size

1/4”

3/8”

1/2”

3/4”

Cv Value

0.3

0.7

0.7

0.7

Orifice Size (㎜)

4

7

7

7

Max. Working Pressure

1 MPa

Operating Pressure

0.4 ~ 0.7 MPa

Max. Working Temp.

PCTFE

-10 ℃ ~ 80 ℃

PFA

-10 ℃ ~ 150 ℃

PI

-10 ℃ ~ 150 ℃

Internal Leakage

Test Pressure ≤ 1 x 10-2  Torr

Holding Time ≥ 1 min.

≤ 1×10-9 mbar.l/sec

External Leakage

Test Pressure ≤ 1 x 10-2  Torr

Holding Time ≥ 1 min.

≤ 1×10-9 mbar.l/sec

Particle Inspection

Pressure :30 ~ 60 psi N2 Gas

Sample Volume :  1 CFM / 0.1 ㎛ and Larger

No Count

Materials

Parts

Materials

① Body

SUS316L (Single Melt / Double Melt)

② Seat

PCTFE / PFA / PI

③ Diaphragm

Ni-Co Alloy

④ Actuator

Aluminum

Surface Roughness

BA

EP

Ra ≤ 10 μinch

Ry ≤ 3.0 ㎛

Ra ≤ 5 μinch

Ry ≤ 0.7 ㎛

Cut off Length : 0.8 ㎜

Cut off Length : 0.25 ㎜

Measuring Length : 4 ㎜

Measuring Length : 1.25 ㎜

Bright Annealed

Electro Polished

Ordering Information

NDV

Product

04

Size

MV

Connection

AC

Connection

E

Grade

S

Material

PFA

Seat
Material

Product

Size

Connection

Actuation

Grade

Material

Seat Material

NDV

04

1/4”

MV

Male

AC

Normal Close

E

EP

D

SUS316L

Double Melt

NONE

PCTFE

 

06

3/8”

FV

Female

AO

Normal Open

B

BA

S

SUS316L

Single Melt

PFA

PFA

 

08

1/2″

LOK

Lok

           

PI

PI

 

12

3/4″

BW

Butt Weld

               

Dimension

Model

Connection

Size

A

(㎜)

B

(㎜)

C

(㎜)

D

(㎜)

E

(㎜)

F

(㎜)

Male

 

1/4″

57

28

64

11

39.6

17

3/8″

77

38

79.4

16

52

28

1/2″

77

38

79.4

16

52

28

3/4″

122

38

85.4

22

52

28

Female

 

1/4″

78

28

64

11

39.6

17

3/8″

104.6

38

79.4

16

52

28

1/2″

104.6

38

79.4

16

52

28

3/8″

104.6

38

79.4

16

52

28

Lok

1/4″

55

28

64

11

39.6

17

3/8″

70

38

79.4

16

52

28

1/2″

70

38

79.4

16

52

28

3/4″

84

38

85.4

22

52

28

Butt Weld

1/4″

54

28

64

11

39.6

17

3/8″

69

38

79.4

16

52

28

1/2″

69

38

79.4

16

52

28

3/4″

150

38

85.4

16

52

28

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