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ZAZP electric straight through single seat regulating valve
Caliber range: DN20-DN300 Pressure range: 1.6Mpa-6.4Mpa Applicable temperature: -40~+450 ℃ Product application:
Product details
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ZAZP electric straight through single seat regulating valve
1、 Product Details
Product model: ZAZP
Product Name: Electric Direct Single Seat Regulating Valve
Overview of regulating valve
The ZAZP electric straight through monotonic control valve is the driving unit in the DKZ type electric unit combination instrument, and it is one of the important links in the automatic adjustment system of the production process. It is powered by a power source and receives a unified indicator signal of 0-10 or 4-20mA DC， Convert this into an upward displacement corresponding to the input signal, automatically operate the valve, change the degree of valve opening, and achieve automatic adjustment of parameters such as industrial medium flow rate, pressure, temperature, and liquid level. Therefore, it is widely used in automatic regulation and remote control of industrial production processes such as chemical, petroleum, metallurgy, power plants, and textile industries.
This series of products includes various varieties such as standard type, corrugated pipe sealing type, jacket insulation, etc. The nominal pressure rating of the product includes PN16, 40, and 64; The nominal diameter range is DN20-400.
2、 Main component materialsMATERIAL
C（WCB）
P（304）
R（316）
Mainly
partValve body and valve cover
WCB（ZG230-450）
ZG1Cr18Ni9Ti（304）
ZG1Cr18Ni12Mo2Ti（316）
Valve core and seat
1Cr18Ni9Ti (304) or Si Ti Lai alloy overlay welding
1Cr18Ni9Ti (304) or Si Ti Lai alloy overlay welding
1Cr18Ni12Mo2Ti (316) or Stellite alloy overlay welding
valve stem
2Cr13
1Cr18Ni9Ti
1Cr18Ni12Mo2Ti
filler
V-shaped polytetrafluoroethylene (F4), flexible graphite, stainless steel corrugated pipe
shim
Reinforced polytetrafluoroethylene (F4), stainless steel gasket, metal graphite wrapped gasket
Push rod, liner
2Cr13
Applicable
working conditionApplicable Medium
Water vapor, oil products, gas and liquid
Nitrate alkali corrosive gas liquid
Acetic acid and other corrosive gases and liquids
Normal temperature type
-30～+250 F4：≤ 200℃
-40～+250 F4：≤ 200℃
-40～+250℃ F4：≤ 200℃
High temperature type
-30～+450℃
-40～+450℃
-40～+450℃
3、 Main technical parameters
Nominal diameter mm
20
25
32
40
50
65
80
100
125
150
200
250
300
Valve seat diameter mm
20
25
32
40
50
65
80
100
125
150
200
250
300
Rated flow coefficient Kv
Single seat
5
8
12
20
32
50
80
120
200
280
450
800
1200
two-seater
10
16
25
40
63
100
160
250
400
630
1000
1600
sleeve
Complete
15
35
50
125
190
400
630
0.6
9
20
30
75
115
240
350
Rated travel L (mm)
10
16
25
40
60
100
Model of actuator
DKZ-310
DKZ-310
DKZ-310
DKZ-410
DKZ-410/510
DKZ-510
Axial thrust Nm
4000
4000
4000
6400
6400/16000
16000
Full travel time S
8
12.5
20
32
48/37
62
supply voltage
AC220V 50Hz
Input signal
4～20mA DC 0～10mA DC
Input impedance
Type II: 200 Ω Type III: 250 Ω
Mode of Action
Electric open (K) type, electric closed (B) type
Traffic characteristics
Equal percentage, straight line, quick opening ability
Allowable leakage rate (L/h)
Single seat ≤ 10-4 x valve rated capacity; Double seat ≤ 10-3 x rated capacity; Sleeve: ≤ 10-3 x valve rated capacity
Inherent adjustable ratio R
30:1
Nominal pressure PN (MPa)
1.6 2.5 4.0 6.4
4、 Main performance indicators
project
index
Basic error%
≤±5.0
Return difference%
≤3.0
Dead zone%
≤3.0
leakage rate
Single seat valve
10-4 times the rated capacity of the valve
double seated valve
10-3 times the rated capacity of the valve
Sleeve valve
10-3 times the rated capacity of the valve
5、 Allowable pressure difference (MPa)
Double seat and sleeve valves can generally withstand ≤ nominal pressure values, while single seat regulating valves can refer to the following table for differential pressure
usage
The valve core is in a flow open state, and when closed, the pressure P2 behind the valve is 0
Nominal Diameter
DN(mm)Valve seat diameter
DN(mm)actuator
Effective thrust
（N）Allowable pressure difference (MPa)
Electric single seat regulating valve
PN1.6(MPa)
PN6.4(MPa)
20
10
12
15
20
400,1000,2500
nominal pressure
3.8
2.7
1.7
1.0
nominal pressure
4.3
2.5
25
26
400,1000,2500
0.5
nominal pressure
0.6
3.6
32
32
0.4
nominal pressure
0.4
2.3
40
40
400,1000
2500，64000.7
1.0
0.7
1.5
50
50
0.5
1.0
0.5
1.0
65
66
6400，16000
1.4
1.4
80
80
1.0
1.0
100
100
0.6
0.6
125
125
6400，16000
0.5
1.0
0.5
1.0
150
150
0.3
0.7
0.3
0.7
200
200
0.2
0.4
0.2
0.4
250
250
16000
0.3
0.3
300
300
0.2
0.2
6、 Main external connection dimensions
Nominal Diameter
DNA
Actuator widthB
L
H
H1
ZAZP single seat
PN1.6
PN4.0
PN6.4
Common
Hot plate type
ZAZP
20
230
460
180
185
190
653
804
65
25
185
190
205
665
816
99
32
200
210
220
671
822
105
40
220
230
240
683
834
116
50
230
530
250
255
265
698
849
131
65
275
285
295
789
949
165
80
305
310
325
792
952
173
100
350
355
370
796
956
177
125
260
630
410
425
440
847
1062
225
150
450
460
475
855
1070
233
200
550
560
570
894
1109
272
250
670
660
670
1156
1368
422
300
740
785
800
1215
1427
484
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