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Pneumatic control valve single seat

Pneumatic control valve single seat

Short Description:

Pneumatic control valve is a compressed gas as power source, using the cylinder as the actuator and valve positioner, aid, converter, electromagnetic valve, the valve, the gas tank, gas filter attachment to drive the valve, switch or proportional regulator, a control signal receiving industrial automation control system to adjust the pipeline to complete the medium: flow, pressure, temperature, level and other various process parameters. Pneumatic control valve is characterized by simple, rapid response, and intrinsically safe, no need to re take the explosion-proof measures.


Product Detail

Product Tags

Pneumatic control valve Use and characteristics

1 applications and characteristics of pneumatic control valve structure of a right angle turn, it is supporting the use of valve positioner, the ratio can be adjusted; type V valve adjustment for a variety of occasions, with a rated flow coefficient, adjustable ratio, good sealing effect, regulating the performance of sensitive, small volume, vertical horizontal installation. Applicable to control of gas, steam, liquids and other media.

2 Pneumatic control valve characteristic: the structure of a right angle turn, by the V type valve, pneumatic actuator, positioner and other accessories; there is a nearly 100 than the inherent flow characteristics; dual bearing structure, the starting torque is small, with excellent sensitivity and speed sensors; shear capacity of strong.

3 pneumatic piston executing agency for the use of compressed air power source, through the piston's movement led to a 90 degree turn, to enable the automatic gate valve. Its components are: adjustment bolt, the executive body box, crankshaft, cylinder block, cylinder, piston, connecting rod shaft, cardan shaft.

4  the working principle of pneumatic control valves: pneumatic control valve by the implementing agencies and regulatory agencies. Executing agency is the thrust control valve components, which according to the control signal pressure to produce the thrust, push the adjustment mechanism of action. Valve is a pneumatic control valve adjustment parts, it has a direct contact with the media regulator, regulating the flow of the fluid.

Main technical specification

Nominal Diameter(mm)

15

20

25

32

40

50

65

80

100

125

150

200

Rated flow coefficient Kv

Equal percentage

3

6

10

16

25

40

63

100

160

250

400

630

 

Liner

4

7

11

18

28

44

69

110

176

275

440

690

Actuator Model

Direct action

PZMA-4

PZMA-5

PZMA-6

PZMA-7

 

Reaction

PZMB-4

PZMB-5

PZMB-6

PZMB-7

Rated Stroke L(mm)

16

25

40

60

Diaphragm Effective Area

280

400

600

1000

Nominal Pressure PN(MPA)

1.6  2.5  4.0  6.3  10.0

Inherent flow Characteristics

Equal percentage、Liner

Inherent rangeability

50:01:00

The range of air source signals

20~100、40~200、80~240

Gas source pressure(Mpa)

0.14、0.25、0.28、0.4

Electric actuator

Depand on the thrust and stroke which valve need

Power voltage

220V.AC 50Hz 380V.AC 50Hz( Three phase)

Leakage class

Soft seal

VI Class、Zero Leakage

 

Metal seal

IV Class、V Class

Flange connection form

PN1.6Mpa, Convexity of valve body                                                               PN≥4.0Mpa,Concavity of valve boday

Upper bonnet form

Standard type

Case Steel:-20~220°C、Cast Stainless steel:-40~220°C

 

Cooling type

Case Steel:-29~425°C、Cast Stainless steel:-60~450°C

 

Cryogenic

Cast Stainless steel:-60~-100°C、-100~-196°C

Main Performance Index

No

Item

Standard Type

Cooling、cryogenic type

1

Intrinsic Error<(%)

±1

±3

2

Return difference<(%)

1

3

3

Dead band<(%)

0.4

1

4

Origin-destination deviation<(%)

±1

±2.5

5

Rated stroke deviation<(%)

+2.5

+2.5

Our Advantage

1. 15 years of experience of valves
2. Consistent product quality and reduction of defective productivity
3. Significant cost reduction versus competitors
4. 1 year of warranty time

Q: Are You Trading Company Or Manufacturer ?
A: We are factory.

Q: How Long Is Your Delivery Time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do You Provide Samples ? Is It Free Or Extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What Is Your Terms Of Payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us


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