Electronic Electric Three-Way Control Valve
Electronic Electric Three-Way Control Valve
Electronic Electric Three-Way Control Valve

Electronic Electric Three-Way Control Valve

  • Built-in servo amplifier, 4-20 mA DC or 1-5 VDC input for direct valve positioning
  • Converging or diverging three-way configuration replaces two single-/double-seat valves
  • For liquids, gases and steam; DN25-DN300, PN0.6-6.4 MPa

Category

Overview

ZDLQ/ZDLX electronic electric three-way control valves feature high regulating accuracy and stable, reliable operation. The converging (mixing) type is mainly used to mix two fluids into a third fluid, while the diverging (splitting) type is mainly used to split one fluid stream into two. This product can replace two single- or double-seat control valves operating in opposite modes, and is used for regulation and control of liquids, gases, steam and other media.

The 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.

Technical Parameters

Nominal Diameter DN (mm) Converging 25 32 40 50 65 80 100 125 150 200 250 300
Diverging 25 32 40 50 65 80 100 125 150 200 250 300
Seat Diameter (mm) 26 32 40 50 65 80 100 125 150 200 250 300
Rated Flow Coefficient Kv Converging 8.5 13 21 34 53 85 135 210 340 535 800 1260
Diverging 8.5 13 21 34 53 85 135 210 340 535 800 1260
Nominal Pressure (MPa) 0.6, 1.6, 2.5, 4.0, 6.4
Stroke (mm) 16 25 40 60 100
Flow Characteristic Linear
Working Temperature (℃) -40 ~ 230℃ (standard type), finned type 230 ~ 450℃ (medium-temperature type), -100 ~ 600℃ for special orders
Flange Dimensions Conforming to JB78-59 and JB79-59; also available to JB/T79.1-94, JB, ANSI, JIS, DIN and other standards on request
Body Material WCB (ZG230-450), ZG1Cr18Ni9Ti, ZG0Cr18Ni12Mo2Ti, CF8, CF8M
Trim Material 1Cr18Ni9, SS304, 0Cr18Ni12Mo2Ti, SS316, ZG1Cr18Ni9Ti
Valve Body Type Three-way double-seat cast globe valve
Bonnet Type Plain (normal temperature), finned (medium temperature), extended neck (low temperature)
Matching Electric Actuator Model PSL PSL-202 PSL-204 PSL-208 PSL-312 PSL325
361L 361LSA-20 361LSB-30 361LSB-50 361LSC-65 361LSC-99
Explosion-proof type 361LXA-20 361LXB-30 361LXB-50

Notes: 1. Products to ANSI, JPI and other foreign flange standards are available; flange face-to-face dimensions to be determined per requirements. 2. Products with working temperature, nominal pressure or nominal diameter beyond the listed ranges can be arranged through consultation with 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 50HzInput signal: DC4-20mA, DC1-5V (shielded cable for signal wire)Output signal: DC4-20mAProtection class: IP67With handwheel Power supply: AC220V 50HzInput signal: DC4-20mA, DC1-5V (shielded cable for signal wire)Output signal: DC4-20mAProtection class: equivalent to IP55Explosion-proof marking: ExdⅡBT4With 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
Specified Value
Basic Error (%) ±2.5
Hysteresis (%) 2.5
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
Rangeability 30:1
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)
25
32
40
50
65
80
100
125
150
200
250
300
Allowable Differential Pressure (MPa) 3.32 2.20 2.20 1.41 1.38 0.94 0.61 0.51 0.36 0.20 0.19 0.13

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)
25
32
40
50
65
80
100
125
150
200
250
300
L (mm) PN1.6 MPa 185 200 220 250 275 300 350 410 450 550 640 740
PN4.0 MPa 190 210 230 255 285 310 355 425 460 560 660 760
PN6.4 MPa 200 210 235 265 295 320 370 440 475 570 670 770
H1 (mm) PN1.6 MPa 140 150 160 180 200 220 220 256 278 322 465 580
PN4.0 MPa 150 160 170 190 220 232 256 295 313 372 474 585
PN6.4 MPa 160 170 180 200 220 242 266 300 318 382 474 585
With PSL Actuator H (mm) Standard type 775 781 775 790 819 820 810 917 927 947 1252 1545
Finned type 905 911 905 920 766 983 973 1116 1126 1144 1805 1825
D (mm) 176
Weight (kg) 61.5 64.5 69.5 76.5 109 132 164 207 267 395 430 480
With 361L Actuator H (mm) Standard type 538 544 660 675 744 745 735 972 982 1027 1204 1265
Finned type 668 674 790 805 691 908 898 1171 1181 1224 1440 1502
D (mm) 225 310
Weight (kg) 69 72 85 92 124 147 179 260 320 448 627 780

Note: Diverging-type valves with nominal diameter below DN80 use a converging-type valve of the same diameter instead.

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