Branch Pneumatic Diaphragm Valve

Specification

Size

1/4”

3/8”

1/2”

Cv Value

0.27

0.7

0.7

Orifice Size (㎜)

4

7

7

Max. Working Pressure

1 MPa

Operationg 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

PDV

Product

04

Size

MV

Connection

AC

Actuation

E

Grade

S

Material

PFA

Seat
Material

A

Flow
Direction

Product

Size

Connection

Actuation

Grade

Material

Seat

Material

Flow

Direction

PDV

04

1/4”

MV

Male

AC

Normal

Close

E

EP

D

SUS316L

Double Melt

NONE

PCTFE

A

A Flow

 

06

3/8”

FV

Female

AO

Normal

Open

B

BA

S

SUS316L

Single Melt

PFA

PFA

B

B Flow

 

08

1/2″

BW

Butt Weld

           

PI

PI

C

C Flow

Flow

Dimension

Model

Connection

Size

A

(㎜)

B

(㎜)

C

(㎜)

D

(㎜)

E

(㎜)

F

(㎜)

G

(㎜)

H

(㎜)

Male

1/4″

57

26

62.9

11

39.6

25.4

25

28

1/2″

77

36

77.4

16

52

28

36

38.5

Female

1/4″

70.6

26

62.9

11

39.6

25.4

25

34.8

1/2″

83

36

77.4

16

52

28

36

41.5

Butt Weld

1/4″

54

26

62.9

11

39.6

25.4

25

27

3/8″

69

36

77.4

16

52

28

36

34.5

1/2″

69

36

77.4

16

52

28

36

34.5

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