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ZJH type pneumatic membrane regulator
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yuanyang
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yuanyang
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China
Main Products:
Regulating valve, ball valve, butterfly valve
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Product information

ZJH member type pneumatic diaphragm regulating valve

Overview
The ZJHP/ZJHM series of fine and small pneumatic diaphragm regulating valves are a new generation of actuators developed by our factory that absorb domestic and foreign advanced technology and comply with IEC standards. They are composed of a multi-spring adjustable zero actuator and a low flow resistance sleeve, and are single-seat adjusted without a lower cover. Valve composition. The volume ratio is 1/3 smaller, the weight ratio is 1/3 smaller, the flow capacity is 1/3 larger, the center of gravity is low, the shock resistance is good, and the installation is easy; the performance indicators are better than similar products, equivalent to foreign CV3000 series control valves, and are widely used Chemical, petroleum, light industry, power station, metallurgy and other industries.

structural principle, structure
It accepts the control signal pressure output by the regulator's standard electrical signal (via an electro-pneumatic positioner or an electro-pneumatic converter) and changes the valve opening to change the flow of the regulated medium and adjust parameters such as flow, pressure, temperature and liquid level. be adjusted to realize the automation of the production process. After the external pneumatic pressure signal is input to the diaphragm chamber, this pressure acts on the diaphragm to generate thrust. This thrust compresses the spring group and moves the push rod to drive the valve stem to open (close) the valve core until the thrust and spring group are compressed. until the final reaction force is balanced and stabilized at a certain position in the stroke. According to the above principle, it can be seen that the valve core displacement has a certain proportional relationship with the input pressure signal.

 

 

ZJHP系列气

Dynamic single seat control valve ZJHM series pneumatic sleeve control valve

HTS single seat control valve HCB cage double seat control valve

Corresponding model of CV3000

HLS small diameter single seat control valve

Nominal diameter DN (mm)

20

25

3

2

40

50

65

80

100

125

150

200

250

300

10

12

15

20

Rated flow coefficient Cv

High-precision flow characteristics valve core

1.6

2.5

4.0

6.3

10

1

7

24

44

68

99

175

275

360

630

900

1440

High capacity flow characteristics spool

1.8

2.8

4.4

6.9

11

1

30

50

85

125

200

310

440

690

1000

1600

Rated stroke(mm)

10

16

25

40

60

100

Film effective area cm²

280

400

630

1000

1600

inherent adjustability ratio

50:1

Nominal pressure MPa

1.6、4.0、6.4

Working temperature℃

Normal temperature type:: -20~200、 -40~250、 -40~450

Ambient temperature℃

-30~+70

Air source pressure KPa

0.14、0.25、0.40

Spring range Kpa

20~100(Basic type)、40~200、80~240

Connector thread

G1/4",M16X1.5

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