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Electric straight through single seat control valve


Product model: ZAZP

Nominal diameter: DN20 ~ 200mm

Nominal pressure: PN1.6 ~ 6.4Mpa

Applicable temperature: - 29 º C ~ + 550 º C

Valve body material: gray cast iron, cast steel, stainless steel

Applicable media: water, steam, oil, liquid and gas

Design standard: GB / T17213

Inspection standard: GB / T4213

Flange standards:JIS B220、JB/T79、ANSI B16.5-1981、GB/T9113、HG20594-97、HG20618-97, etc




PRODUCT OVERVIEW

The electric straight through single seat regulating valve is composed of DKZ series straight stroke electric actuator and straight through single seat valve. It is powered by single-phase AC 220V power supply, receives 0 ~ 10mA or 4 ~ 20mA DC signal, and automatically controls the opening of the regulating valve to achieve continuous regulation of process parameters such as fluid pressure, flow and liquid level in the pipeline. The product has the characteristics of sensitive action, convenient access to energy and rapid signal transmission. It is widely used in industrial automatic control systems such as electric power, metallurgy, chemical industry, light textile and so on.


DESIGN FEATURES

1. The valve body is a constant cross-section low flow resistance channel designed according to the principle of hydrodynamics, and the rated flow coefficient is increased by 30%.

2. The adjustable range is large, the inherent adjustable ratio is 50, and the flow characteristics have straight line and equal percentage.

3. The plug of the electric sleeve regulating valve is provided with upper and lower pressure equalizing holes, with small unbalanced force, good valve stability, strong sleeve interchangeability and large differential pressure.

4. The regulating cut-off type adopts soft sealing structure valve core, which reaches class VI leakage standard (zero leakage).

5. The servo amplifier adopts deep dynamic negative feedback, which can improve the automatic adjustment accuracy.

6. There are many forms of electric operators, which can be applied to 4 ~ 20ma.dc or 0 ~ 10ma.dc.

7. The electronic electric regulating valve can directly control the valve opening by current signal without servo amplifier.

8. The bellows sealed regulating valve forms a complete seal on the moving valve stem to prevent fluid leakage.



MAIN TECHNICAL PARAMETERS

Nominal diameterDN(mm)

G3/4″

20

25

32

40

50

65

80

100

125

150

200

Seat diameterDN(mm)

3

4

5

6

7

8

10

12

15

20

26

32

40

50

66

80

100

125

150

200

Rated flow coefficientKv

0.08

0.12

0.2

0.32

0.5

0.8

1.2

2

3.2

5

8

12

20

32

50

80

120

200

280

450

Flow characteristics

straight line

Straight line, equal percentage

Nominal pressure PN(MPa)

10

1.6,4.0,6.4

Connection type

Pipe threaded connection G3 / 4

Flange connection: PN1.6 according to JB79-59 standard; PN4.0 according to JB79-59 STAndard

Model of actuator

DKZ-310

DKZ-310

DKZ-310

DKZ-410

DKZ-410

Extraction thrust(N)

4000

4000

4000

6400

6400

TripL(mm)

10

10

16

25

40

60

Full travel time(S)

8

8

12.5

20

32

50

Mode of action

Electric open (K) common; Power off (B)

Input signal

0~10mA  4~20mA  DC

Power supply

220V;50~60Hz

Inherent adjustable ratio R

30:01:00


MATERIAL OF MAIN PARTS

ModelValve body and bonnetValve core, valve stem and valve seatShimFiller
ZAZP-16
ZAZN-16
HT2001Cr18Ni9Asbestos rubber sheetTeflon
ZAZP-40
ZAZN-40
ZG251Cr18Ni9Asbestos rubber sheetTeflon
ZAZP-64P
ZAZN-64P
1Cr18Ni91Cr18Ni9Asbestos rubber sheetTeflon


TECHNICAL PARAMETERS OF ACTUATOR

ModelInput signal/mA DCOutput shaft thrust/NTrip/mmFull travel time/mm
Type IIDKZ-3100~1040001612.5
2530
DKZ-41064004032
6048
DKZ-510160006037
10062
Type ⅢDKZ-32004~2025001610
DKZ-33002515.6
DKZ-440064004025
DKZ-45006037.5


MAIN OVERALL DIMENSIONS

Nominal diameter DN20253280100125150200
A460530630
B230230260
H 1490540625
L150160180310350400480600
H 2175180215285315400460540
H 35357.570100110125142.5170
Weight (Kg)PN 16 405052548795132135155
PN64535658110129177180210

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