Pneumatic double acting wafer type ball valve

Pneumatic Actuator

1.Double acting   2.single acting

Pneumatic accessories

Limit switch,positioner,Solenoid Valve,filter relief-pressure valve,hand wheel-operated.

Nominal diameter

DN15-DN150

Nominal pressure

1.6-4.0MPa

Applicable temperature

PTFE:-30~180°C PPL:-30~250°C

Body material

304,316,316L,WCB

Disc material

304,316,316L,WCB

Seat lining

PTFE,PPL

Applicable medium

Gas,steam,water,oil,etc.

Diameter (mm)

Inch

Pressure (MPa)

German standard size (mm)

L

D1

D2

D3

H

n-¢m

15

1/2

1.6

2.5

4.0

42

15

45

65

46

4-12

20

3/4

44

20

58

75

51

4-12

25

1

50

25

68

85

62

4-12

32

1 1/4

60

32

78

100

72

4-16

40

1 1/2

65

40

88

110

78

4-16

50

2

80

50

102

125

86

4-16

65

2 1/2

1.0/1.6

110

63.5

122

145

108

4-16

2.5/4.0

8-16

80

3

1.0/1.6

120

76

138

160

116

8-16

2.5/4.0

100

4

1.0/1.6

150

95

158

180

139

8-16

2.5/4.0

162

190

8-20

125

5

1.0/1.6

180

118

118

210

176

8-16

2.5/4.0

220

8-24

150

6

1.0/1.6

225

142

212

240

192

8-20

2.5/4.0

218

250

8-24

Double acting pneumatic actuator working principle:

1. Compressed air access into A holes, then the piston separates;
2. So that the drive shaft anticlockwise, valve open;
3. Air remove from B hole;

 1.    Compressed air access into B holes,  

        then the piston will be closer;

2.     So that the drive shaft clockwise, valve close;

3.     Air remove from A hole;