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Pneumatic Flow Control Valve

Pneumatic Flow Control Valve

Pneumatic flow control valve specification Pneumatic flow control valve FAQ Q: What's your payment terms? A: Usually we accept T/T ,Western Union or PayPal. Q: What's your shipping item? A: We ship items via EMS, DHL, UPS, TNT, China Post or Hong Kong Post. Q: What's your delivery...

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Product Details

Pneumatic Flow Control Valve.jpg

Control valves are valves used to control conditions such as flow, pressure, temperature, and liquid level by fully or partially opening or closing in response to signals received from controllers that compare a "setpoint" to a "process variable" whose value is provided by sensors that monitor changes in such conditions. The opening or closing of control valves is usually done automatically by electrical, hydraulic or pneumatic actuators. Positioners are used to control the opening or closing of the actuator based on electric, or pneumatic signals. These control signals, traditionally based on 3-15psi (0.2-1.0bar), more common now are 4-20mA signals for industry, 0-10V for HVAC systems, and the introduction of "Smart" systems, HART, Fieldbus Foundation, and Profibus being the more common protocols.

A control valve consists of three main parts in which each part exist in several types and designs: ?Valve's actuator?Valve's positioner?Valve's body


Pneumatic flow control valve specification

electric/pneumatic valve positioner is a developed new type products which introduce advanced foreign technology. Is explosion-proof type.
The function of the positioner is to convert the electric signal (output by the control device) into pneumatic signal (drive the control valve action). Also the positioner has the function of the valve positioning: to overcome the friction of stem, balance out the unbalanced force which caused by pressure changes. So that the valve opening is corresponding to the control signal from control valve which realized the correct positioning.


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 percentageLiner

Inherent rangeability

50:01:00

The range of air source signals

20~10040~20080~240

Gas source pressure(Mpa)

0.140.250.280.4

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 ClassZero Leakage

Metal seal

IV ClassV Class

Flange connection form

PN1.6Mpa, Convexity of valve body                                                                 PN4.0Mpa,Concavity of valve boday

Upper bonnet form

Standard type

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

Cooling type

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

Cryogenic

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

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic Flow Control Valve.jpg

Pneumatic flow control valve FAQ

1.Can i get free samples?
A: Yes,we can provide you the free sample, but you need to bear their own delivery costs.

2.Can I request to change the form of packaging and transportation?
A:Yes,We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.

3.Can i request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.

4.Can i have my own Logo on the product?
A: Yes, you can send us your drawing and we can make your logo, but you have to bear
their own the cost.

5.Can you produce the products according to my own drawings?
A:Yes,we can produce the products according to your drawings that will be most satisfy you.


 

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Mail address: Infor@hoyeevalve.com

Website:www.hoyeevalve.com



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