Electronic Electric Single-Seated Control Valve
Electronic Electric Single-Seated Control Valve
Electronic Electric Single-Seated Control Valve

Electronic Electric Single-Seated Control Valve

  • Built-in servo amplifier, 4-20 mA DC or 1-5 VDC input for direct valve positioning
  • Strict leakage control, suitable for low differential pressure and viscous media
  • DN20-DN400, PN0.6-6.4 MPa; GB/JB/ANSI/JIS/DIN flange standards

Category

Overview

ZDLP Electronic Electric Single-Seated Control Valve consists of a PS series or 3610 series linear-motion electric actuator and a low-flow-resistance straight-through single-seat valve body (actuators of other brands can also be fitted). The electric actuator is an integrated electronic construction with a built-in servo amplifier: once the input control signal (4-20 mA DC or 1-5 VDC) and the power supply are connected, the valve opening can be positioned directly, achieving regulation of pressure, flow, level, temperature and other process parameters. It features fast response, simple wiring, large flow capacity, compact size and high regulating accuracy.

The single-seat valve is suitable for applications with strict leakage requirements, low differential pressure across the valve and viscous media. It is widely used in power generation, metallurgy, chemical, petroleum, environmental protection, light industry and other industries.

Technical Parameters

Nominal Diameter DN (mm)
G3/4″
20
25
32
40
50
65
80
100
125
150
200
250
300
350
400
Seat Diameter (mm) 3 4 5 6 7 8 10 12 15 20 26 32 40 50 66 80 100 125 150 200 250 300 Available on request
Rated Flow Coefficient Kv Linear 0.08 0.12 0.20 0.32 0.5 0.8 1.8 2.8 4.4 6.9 11 17.6 27.5 44 69 110 176 275 440 690 1000 1600
Equal Percentage             1.6 2.5 4 6.3 10 16 25 40 63 100 160 250 400 630 900 1440
Nominal Pressure (MPa) 0.6, 1.6, 2.5, 4.0, 6.4
Stroke (mm) 10 16 25 40 60 100
Flow Characteristic Linear Linear, Equal Percentage, Quick Opening
Working Temperature (℃) -40 ~ 230℃ (standard type), 230 ~ 450℃ with cooling fin (medium-temperature type), -100 ~ 600℃ on special order
Flange Dimensions Conforming to JB78-59 and JB79-59; also available to JB/T79.1-94, JB/T79.2-94, ANSI, JIS, DIN and other standards on order
Body Material WCB (ZG230-450), ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti, CF8, CF8M
Trim Material 1Cr18Ni9, SS304, 0Cr18Ni12Mo2Ti, SS316, ZG1Cr18Ni9Ti
Body Type Straight-through single-seat cast globe valve
Bonnet Type Plain (normal temperature), finned (medium temperature), extended neck (low temperature)
Matching Electric Actuator Model PSL PSL-201 PSL-202 PSL-204 PSL-208 PSL-312 PSL325
361L 361LSA-08 361LXA-08 361LSA-20 361LSB-30 361LSB-50 361LSC-65 361LSC-99
Explosion-proof 361LXA-20 361LXB-30 361LXB-50  

Note: 1. Products with ANSI, JPI and other foreign flange standards can be supplied, with face-to-face dimensions determined as required. 2. For products beyond the listed working temperature, nominal pressure or nominal diameter range, please contact us.

Actuator Specifications

Model
Rated Output Force (N)
Speed (mm/s)
Technical Parameters
PSL
361L
PSL
361L
PSL
361L
PSL
361L
201 361LSA-08 361LXA-08 1000 800 800 0.25 4.2 4.2 Power supply: AC220V 50Hz
Input signal: DC4-20mA, DC1-5V (shielded cable for signal wire)
Output signal: DC4-20mA
Protection class: IP67
With handwheel		 Power supply: AC220V 50Hz
Input signal: DC4-20mA, DC1-5V (shielded cable for signal wire)
Output signal: DC4-20mA
Protection class: equivalent to IP55
Explosion-proof marking: ExdⅡBT4
With hand lever
202 361LSA-20 361LXA-20 2000 2000 2000 0.50 2.1 2.1
204 361LSB-30 361LXB-30 4500 3000 3000 0.50 3.5 3.5
208 361LSB-50 361LXB-50 8000 5000 5000 1.00 1.7 1.7
312 361LSC-65 12000 6500 0.60 2.8
325 361LSC-99 25000 10000 1.0 2.0

Performance Specifications

Item
Index Value
Basic Error (%) With 3610L: ±2.5; with positioner: ±1.0
Hysteresis (%) With 361L: ±2.0; with PSL: ±1.0
Dead Band (%) 1.0
Start/End Point Deviation (%) Direct-acting Start point ±2.5
End point ±2.5
Reverse-acting Start point ±2.5
End point ±2.5
Adjustable Range 50:1
Rated Stroke Deviation (%) 2.5
Allowable Leakage (L/h) Complying with JB/T7387-94 Class IV, less than 10-4 of rated flow capacity

Allowable Differential Pressure

Nominal Diameter DN (mm)
20
25
40
50
65
80
100
150
200
250
300
Seat Diameter (mm) 10 12 15 20 25 32 40 50 65 80 100 125 150 200 250 300
Actuator
Allowable Differential Pressure ΔP (MPa)
With PSL PSL202 6.4 6.4 6.4 4.90 3.14 1.92 1.23 0.78                
PSL204           4.31 2.76 1.76 1.04 0.69 0.44          
PSL208                 1.86 1.23 0.78 0.50 0.35 0.20    
PSL320                       1.26 0.87 0.49 0.32 0.22
With 361L 361LSA-20 6.4 6.4 6.4 4.90 3.14 1.92 1.23 0.78                
361LSB-50           4.79 3.06 1.96 1.16 0.76 0.49          
361LSC-65                 1.51 0.99 0.64 0.41 0.28      
361LSC-99                       0.63 0.44 0.25 0.16 0.11

Note: The actual actuator configuration depends on specific process parameters. If the allowable differential pressure is unclear or the maximum working differential pressure exceeds the listed range, please contact us and appropriate solutions can be arranged.

Overall Dimensions

Nominal Diameter DN (mm)
20
25
40
50
65
80
100
150
200
250
300
L (mm) PN1.6 MPa 181 184 222 254 276 298 352 451 600 720 820
PN4.0 MPa 194 197 235 267 292 317 368 473 600 760 850
PN6.4 MPa 206 210 251 286 311 337 394 508 650 800 870
H1 (mm) 67 72 87 92 105 110 127 174 209 300 350
With PSL H (mm) Standard type 738 750 765 767 845 857 875 1025 1045 1252 1545
Cooling-fin type 888 900 930 937 1025 1042 1085 1285 1305 1805 1825
D (mm) 176 225
Weight (kg) 15 17 24 29 49 61 82 150 211 370 570
With 361L H (mm) Standard type 501 513 650 652 770 782 800 1080 1125 1345 1365
Cooling-fin type 651 663 815 822 950 967 1010 1340 1385 1625 1645
D (mm) 225 310
Weight (kg) 23 24 39 44 64 76 97 203 264 418 618

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